This is a quick-reference library for boiler service, engineer, check-programme and chimney-sweep modes. Select the manufacturer, then the boiler family to see the control sequence on the page.
Each entry gives the practical access sequence, the minimum/maximum or test-output selection, and how to leave the mode. The manufacturer PDF remains underneath as the source/reference and for the complete commissioning procedure.
Important: this page intentionally does not reproduce gas-valve adjustment procedures, combustion target values or calibration settings. Gas and combustion work must be carried out by an appropriately qualified competent engineer; gas work in the UK must be carried out by a suitably registered Gas Safe engineer.
Control layouts can change during a boiler family’s production life. Always match the model and production revision to the appliance data plate, and use the display state shown in the instructions as the cross-check.
Select a Baxi boiler family below. Direct Baxi/Sitecore PDFs are used wherever Baxi exposes them. For the two current models whose Baxi pages do not expose the technical manual, a clearly labelled third-party-hosted copy is used instead.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate); on combi versions a further step gives H (maximum DHW rate).
Exit: Press F1.
Revision note: The Combi 2/2.1 family has more than one fascia/control revision; use the display letters as the cross-check rather than relying only on knob appearance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold the dedicated Chimney Sweep button for about 3 seconds. The boiler runs at minimum rate.
Select output / test: Press the Chimney Sweep button again to change to maximum rate.
Exit: Press and hold RESET for about 3 seconds, or return the control to normal operation.
Revision note: Button artwork varies slightly between Heat models, but the minimum → maximum sequence is the same on this control family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate); on combi versions a further step gives H (maximum DHW rate).
Exit: Press F1.
Revision note: The Combi 2/2.1 family has more than one fascia/control revision; use the display letters as the cross-check rather than relying only on knob appearance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold the dedicated Chimney Sweep button for about 3 seconds. The boiler runs at minimum rate.
Select output / test: Press the Chimney Sweep button again to change to maximum rate.
Exit: Press and hold RESET for about 3 seconds, or return the control to normal operation.
Revision note: Button artwork varies slightly between Heat models, but the minimum → maximum sequence is the same on this control family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate).
Exit: Press F1.
Revision note: System-boiler controls share the Combi 2 platform, but DHW test states depend on system configuration; this quick reference therefore lists CH minimum/maximum only.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate); on combi versions a further step gives H (maximum DHW rate).
Exit: Press F1.
Revision note: The Combi 2/2.1 family has more than one fascia/control revision; use the display letters as the cross-check rather than relying only on knob appearance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold the dedicated Chimney Sweep button for about 3 seconds. The boiler runs at minimum rate.
Select output / test: Press the Chimney Sweep button again to change to maximum rate.
Exit: Press and hold RESET for about 3 seconds, or return the control to normal operation.
Revision note: Button artwork varies slightly between Heat models, but the minimum → maximum sequence is the same on this control family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate).
Exit: Press F1.
Revision note: System-boiler controls share the Combi 2 platform, but DHW test states depend on system configuration; this quick reference therefore lists CH minimum/maximum only.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate); on combi versions a further step gives H (maximum DHW rate).
Exit: Press F1.
Revision note: The Combi 2/2.1 family has more than one fascia/control revision; use the display letters as the cross-check rather than relying only on knob appearance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function
Enter: Press F1 + F2 together. The display enters the chimney-sweep test and shows L for minimum rate.
Select output / test: From L, turn the right-hand temperature control one step clockwise for h (maximum CH rate).
Exit: Press F1.
Revision note: System-boiler controls share the Combi 2 platform, but DHW test states depend on system configuration; this quick reference therefore lists CH minimum/maximum only.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold the dedicated Chimney Sweep button for about 3 seconds. The boiler runs at minimum rate.
Select output / test: Press the Chimney Sweep button again to change to maximum rate.
Exit: Press and hold RESET for about 3 seconds, or return the control to normal operation.
Revision note: Button artwork varies slightly between Heat models, but the minimum → maximum sequence is the same on this control family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / combustion test
Enter: With a heat demand present, enter the boiler’s combustion-test function from the installer controls. On this compact Baxi platform the test states are shown on the display rather than through a separate user menu.
Select output / test: Use the test-state controls to run minimum and maximum firing rates; do not use this quick reference to alter gas-valve calibration or combustion settings.
Exit: Cancel the combustion-test state or reset the boiler to return to the normal display.
Revision note: These compact models span several PCB/fascia revisions. The page intentionally avoids giving a guessed button combination where Baxi changed the key labelling; the reference PDF below is retained for the exact key artwork on that revision.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / combustion test
Enter: With a heat demand present, enter the boiler’s combustion-test function from the installer controls. On this compact Baxi platform the test states are shown on the display rather than through a separate user menu.
Select output / test: Use the test-state controls to run minimum and maximum firing rates; do not use this quick reference to alter gas-valve calibration or combustion settings.
Exit: Cancel the combustion-test state or reset the boiler to return to the normal display.
Revision note: These compact models span several PCB/fascia revisions. The page intentionally avoids giving a guessed button combination where Baxi changed the key labelling; the reference PDF below is retained for the exact key artwork on that revision.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold the dedicated Chimney Sweep button for about 3 seconds. The boiler runs at minimum rate.
Select output / test: Press the Chimney Sweep button again to change to maximum rate.
Exit: Press and hold RESET for about 3 seconds, or return the control to normal operation.
Revision note: Button artwork varies slightly between Heat models, but the minimum → maximum sequence is the same on this control family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / combustion test
Enter: With a heat demand present, enter the boiler’s combustion-test function from the installer controls. On this compact Baxi platform the test states are shown on the display rather than through a separate user menu.
Select output / test: Use the test-state controls to run minimum and maximum firing rates; do not use this quick reference to alter gas-valve calibration or combustion settings.
Exit: Cancel the combustion-test state or reset the boiler to return to the normal display.
Revision note: These compact models span several PCB/fascia revisions. The page intentionally avoids giving a guessed button combination where Baxi changed the key labelling; the reference PDF below is retained for the exact key artwork on that revision.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / combustion test
Enter: With a heat demand present, enter the boiler’s combustion-test function from the installer controls. On this compact Baxi platform the test states are shown on the display rather than through a separate user menu.
Select output / test: Use the test-state controls to run minimum and maximum firing rates; do not use this quick reference to alter gas-valve calibration or combustion settings.
Exit: Cancel the combustion-test state or reset the boiler to return to the normal display.
Revision note: These compact models span several PCB/fascia revisions. The page intentionally avoids giving a guessed button combination where Baxi changed the key labelling; the reference PDF below is retained for the exact key artwork on that revision.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / combustion test
Enter: With a heat demand present, enter the boiler’s combustion-test function from the installer controls. On this compact Baxi platform the test states are shown on the display rather than through a separate user menu.
Select output / test: Use the test-state controls to run minimum and maximum firing rates; do not use this quick reference to alter gas-valve calibration or combustion settings.
Exit: Cancel the combustion-test state or reset the boiler to return to the normal display.
Revision note: These compact models span several PCB/fascia revisions. The page intentionally avoids giving a guessed button combination where Baxi changed the key labelling; the reference PDF below is retained for the exact key artwork on that revision.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Biasi boiler family below. Direct Biasi-hosted PDFs are used throughout, covering current and a selection of widely encountered legacy UK ranges.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: On combi models open a hot tap, then press A + B + C together until Pr01 appears. Press A + C to enter the firing test and reach LP.
Select output / test: Press A to step through the firing states; LP is low rate and dP is the maximum-DHW test state (with the intermediate CH test states shown between them).
Exit: Hold B for about 2 seconds until the small display returns to 00, then switch mains power off/on to restore normal operation.
Revision note: Biasi’s dedicated sheet notes a production-revision split around the serial-number change; match the fascia/revision before using the sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: On combi models open a hot tap, then press A + B + C together until Pr01 appears. Press A + C to enter the firing test and reach LP.
Select output / test: Press A to step through the firing states; LP is low rate and dP is the maximum-DHW test state (with the intermediate CH test states shown between them).
Exit: Hold B for about 2 seconds until the small display returns to 00, then switch mains power off/on to restore normal operation.
Revision note: Biasi’s dedicated sheet notes a production-revision split around the serial-number change; match the fascia/revision before using the sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold buttons G + F for 3 seconds. The display shows P00. Use A/B to move to P06.
Select output / test: At P06 use E to choose 01 for minimum rate or 02 for maximum rate, then press A to confirm.
Exit: Set P06 = 00 and confirm with A, then press F until the normal/OFF screen returns (or power-cycle after completing the test).
Revision note: Biasi identifies the fascia keys by letters in its service-mode sheet; match the letters to the control-panel diagram for the exact appliance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold buttons G + F for 3 seconds. The display shows P00. Use A/B to move to P06.
Select output / test: At P06 use E to choose 01 for minimum rate or 02 for maximum rate, then press A to confirm.
Exit: Set P06 = 00 and confirm with A, then press F until the normal/OFF screen returns (or power-cycle after completing the test).
Revision note: Biasi identifies the fascia keys by letters in its service-mode sheet; match the letters to the control-panel diagram for the exact appliance.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold A + C for 5 seconds until HiS appears. Press C twice to reach ChS, then press B to enter.
Select output / test: The test starts at LP (minimum). Press C to move through the firing states to dP (maximum).
Exit: Press and hold A + C for 5 seconds.
Revision note: This sequence is from Biasi’s dedicated RinNova Adaptive Service Mode / Chimney Sweep sheet.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: Biasi’s current archive provides service manuals for this family but not a separate quick-reference chimney-sweep sheet. The page therefore states the usable firing-check method rather than fabricating a universal key sequence across older PCB revisions.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Ferroli boiler family below. Direct Ferroli-hosted PDFs are used where available. Older UK ranges whose manufacturer links are no longer publicly exposed use clearly labelled external archived copies.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service → Test
Enter: Open MENU → Service, enter installer password 1234, choose Test and confirm.
Select output / test: After ignition the test screen shows the firing state. Use the heating adjustment keys to cycle through min, med, max CH and (on combi models) max DHW.
Exit: Press the Back/Return key to leave Test. The test also ends automatically after roughly 15 minutes.
Revision note: Do not use the adjacent combustion-offset/calibration functions from the service menu unless carrying out the full manufacturer procedure with the required analyser.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service → Test
Enter: Open MENU → Service, enter installer password 1234, choose Test and confirm.
Select output / test: After ignition the test screen shows the firing state. Use the heating adjustment keys to cycle through min, med, max CH and (on combi models) max DHW.
Exit: Press the Back/Return key to leave Test. The test also ends automatically after roughly 15 minutes.
Revision note: Do not use the adjacent combustion-offset/calibration functions from the service menu unless carrying out the full manufacturer procedure with the required analyser.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: TEST mode / combustion test
Enter: With the appliance able to accept a demand, press the heating + and heating − buttons together for about 5 seconds. TEST mode starts and the burner is driven for the test.
Select output / test: Use the heating +/− controls to alter the test output. On combi versions, the DHW − key selects minimum and DHW + selects maximum where those shortcuts are provided.
Exit: Press the heating + and − together for about 5 seconds again. TEST mode also times out automatically after about 15 minutes.
Revision note: This is the common Ferroli TEST-mode arrangement used across DIVA/DIVATECH/DIVATOP, DOMI, Modena, Optimax and Bluehelix Alpha/Pro control generations; fascia legends vary.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Glow-worm boiler family below. Only direct manufacturer-hosted technical PDFs that could be verified are included; no third-party manual sites are used.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / check programme
Enter: Use the boiler’s test/check-programme entry from the service controls; Betacom2/3/4/C span several fascia revisions and do not share one reliable printed button label.
Select output / test: Select the burner test/check programme and run the required minimum/maximum firing state. Do not change combustion calibration from this quick-reference page.
Exit: Cancel the check programme or reset to the normal display.
Revision note: The four Betacom generations are grouped because their manuals are separate. The exact service-key symbol is revision-specific, so the page avoids inventing a single physical-button label.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check Programmes
Enter: Open the installer level from the front control, select the installer/competent-person symbol and enter code 35, then open the P check-programme menu.
Select output / test: Use P.01 for an adjustable burner-output test (0–100%). Where shown on that revision, P.04 is the chimney-sweep function.
Exit: Back out of the P menu to the normal display or cancel the running check programme.
Revision note: This is the current Compact control family; do not confuse it with the older 75E/80E/100e Compact boilers below.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Diagnostics / Check Programmes
Enter: Press and hold MODE for about 7 seconds, enter competent-person code 96, then select the P check-programme menu.
Select output / test: Use P.01 for the burner-output test; on versions that expose the direct chimney-sweep programme, select it from the same P menu. P.01 allows the firing rate to be changed between minimum and maximum.
Exit: Return through the menu to the normal operating display; a running check programme also has an automatic timeout.
Revision note: Exact P-programme availability differs slightly between Combi, System and Regular versions, but the access code/menu family is shared.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Diagnostics / Check Programmes
Enter: Press and hold MODE for about 7 seconds, enter competent-person code 96, then select the P check-programme menu.
Select output / test: Use P.01 for the burner-output test; on versions that expose the direct chimney-sweep programme, select it from the same P menu. P.01 allows the firing rate to be changed between minimum and maximum.
Exit: Return through the menu to the normal operating display; a running check programme also has an automatic timeout.
Revision note: Exact P-programme availability differs slightly between Combi, System and Regular versions, but the access code/menu family is shared.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Diagnostics / Check Programmes
Enter: Press and hold MODE for about 7 seconds, enter competent-person code 96, then select the P check-programme menu.
Select output / test: Use P.01 for the burner-output test; on versions that expose the direct chimney-sweep programme, select it from the same P menu. P.01 allows the firing rate to be changed between minimum and maximum.
Exit: Return through the menu to the normal operating display; a running check programme also has an automatic timeout.
Revision note: Exact P-programme availability differs slightly between Combi, System and Regular versions, but the access code/menu family is shared.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Check programme P.01
Enter: Enter the appliance check-programme menu and select P.01.
Select output / test: Set P.01 to the required firing percentage; 100 is full load and the adjustable range runs down to minimum output.
Exit: End P.01 and return the controls to normal operation.
Revision note: Essential uses the Glow-worm/Vaillant-family P-programme system. This quick reference deliberately omits gas-adjustment values.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Test programmes P.01–P.07
Enter: Switch the boiler off. Hold the relevant test/service key for more than 5 seconds while switching the boiler back on; the display opens at P.01 / Off.
Select output / test: Choose P.01, enter it, then set burner output from 0% (minimum) to 100% (maximum) with the heating-temperature keys. Other P programmes are started from the same menu.
Exit: Press RESET or the On/Off button. A test programme also stops automatically after about 15 minutes.
Revision note: On Ultracom2 the manufacturer identifies the service key by symbol rather than a text label; use the fascia symbol shown beside the P-programme section of the reference PDF.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Diagnostics / Check Programmes
Enter: Press and hold MODE for about 7 seconds, enter competent-person code 96, then select the P check-programme menu.
Select output / test: Use P.01 for the burner-output test; on versions that expose the direct chimney-sweep programme, select it from the same P menu. P.01 allows the firing rate to be changed between minimum and maximum.
Exit: Return through the menu to the normal operating display; a running check programme also has an automatic timeout.
Revision note: Exact P-programme availability differs slightly between Combi, System and Regular versions, but the access code/menu family is shared.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Test programmes P.01–P.07
Enter: Switch the boiler off. Hold the relevant test/service key for more than 5 seconds while switching the boiler back on; the display opens at P.01 / Off.
Select output / test: Choose P.01, enter it, then set burner output from 0% (minimum) to 100% (maximum) with the heating-temperature keys. Other P programmes are started from the same menu.
Exit: Press RESET or the On/Off button. A test programme also stops automatically after about 15 minutes.
Revision note: On Ultracom2 the manufacturer identifies the service key by symbol rather than a text label; use the fascia symbol shown beside the P-programme section of the reference PDF.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Test programmes P.01–P.07
Enter: Switch the boiler off. Hold the relevant test/service key for more than 5 seconds while switching the boiler back on; the display opens at P.01 / Off.
Select output / test: Choose P.01, enter it, then set burner output from 0% (minimum) to 100% (maximum) with the heating-temperature keys. Other P programmes are started from the same menu.
Exit: Press RESET or the On/Off button. A test programme also stops automatically after about 15 minutes.
Revision note: On Ultracom2 the manufacturer identifies the service key by symbol rather than a text label; use the fascia symbol shown beside the P-programme section of the reference PDF.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Diagnostics / Check Programmes
Enter: Press and hold MODE for about 7 seconds, enter competent-person code 96, then select the P check-programme menu.
Select output / test: Use P.01 for the burner-output test; on versions that expose the direct chimney-sweep programme, select it from the same P menu. P.01 allows the firing rate to be changed between minimum and maximum.
Exit: Return through the menu to the normal operating display; a running check programme also has an automatic timeout.
Revision note: Exact P-programme availability differs slightly between Combi, System and Regular versions, but the access code/menu family is shared.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Test programmes P.01–P.07
Enter: Switch the boiler off. Hold the relevant test/service key for more than 5 seconds while switching the boiler back on; the display opens at P.01 / Off.
Select output / test: Choose P.01, enter it, then set burner output from 0% (minimum) to 100% (maximum) with the heating-temperature keys. Other P programmes are started from the same menu.
Exit: Press RESET or the On/Off button. A test programme also stops automatically after about 15 minutes.
Revision note: On Ultracom2 the manufacturer identifies the service key by symbol rather than a text label; use the fascia symbol shown beside the P-programme section of the reference PDF.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Test programmes P.01–P.07
Enter: Switch the boiler off. Hold the relevant test/service key for more than 5 seconds while switching the boiler back on; the display opens at P.01 / Off.
Select output / test: Choose P.01, enter it, then set burner output from 0% (minimum) to 100% (maximum) with the heating-temperature keys. Other P programmes are started from the same menu.
Exit: Press RESET or the On/Off button. A test programme also stops automatically after about 15 minutes.
Revision note: On Ultracom2 the manufacturer identifies the service key by symbol rather than a text label; use the fascia symbol shown beside the P-programme section of the reference PDF.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These legacy appliances pre-date the common digital P-programme service interface; commissioning/firing checks are made using the appliance’s normal burner demand and service controls.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Ideal boiler family below. Only direct manufacturer-hosted technical PDFs that could be verified are included; no third-party manual sites are used.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold RESTART + FUNCTION for more than 5 seconds. The last three faults are shown before the installer functions.
Select output / test: Advance to SH and press RESTART for maximum rate; advance to SL and press RESTART for minimum rate.
Exit: Press RESTART to stop a running max/min rate test; continue through/exit the installer sequence to return to the normal display.
Revision note: ESP1 uses FUNCTION + RESTART; do not use the newer Logic² MODE + RESTART wording on this model.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer Mode
Enter: Hold MODE + RESTART together for more than 5 seconds. The last three faults are displayed, then the installer sequence begins.
Select output / test: When SH is displayed, press RESTART to run maximum rate. Press MODE to move to SL, then press RESTART to run minimum rate. Logic² runs each firing test for about 10 minutes unless stopped.
Exit: Press RESTART to stop the running SH/SL test. Continue pressing MODE through the remaining installer items; at SE, press MODE to exit to normal operation.
Revision note: Heat/System versions omit DHW-only functions but use the same SH/SL firing-test sequence.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: SERVICE MODE
Enter: Make sure a heat demand is present. Press MENU, scroll to SERVICE MODE and press SELECT.
Select output / test: Select MINIMUM CH RATE for low fire or MAXIMUM CH RATE (or MAXIMUM DHW RATE on versions that show it) for the high-rate test, then press SELECT. The screen shows target/actual fan information and time remaining.
Exit: Press EXIT. The service test also ends automatically after about 10 minutes.
Revision note: Vogue MAX uses a text menu rather than the SH/SL installer sequence used by Logic².
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: SERVICE MODE
Enter: Make sure a heat demand is present. Press MENU, scroll to SERVICE MODE and press SELECT.
Select output / test: Select MINIMUM CH RATE for low fire or MAXIMUM CH RATE for the high-rate test, then press SELECT. The screen shows target/actual fan information and time remaining.
Exit: Press EXIT. The service test also ends automatically after about 10 minutes.
Revision note: Vogue MAX uses a text menu rather than the SH/SL installer sequence used by Logic².
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Potterton boiler family below. Potterton documentation is now fragmented across legacy archives. Where a current manufacturer-hosted direct PDF could not be verified, the archived copy is clearly labelled as external.
Manufacturer terminology: Chimney Sweep Function (P09)
Enter: Enter the installer parameter menu and set P09 = 01. The chimney-sweep test becomes active.
Select output / test: The display cycles through the firing states: LP minimum DHW, hP minimum CH, cP maximum CH and dP maximum DHW. Use the DHW temperature +/− keys to move between the states.
Exit: Set P09 back to 00 / cancel the test and return to normal operation.
Revision note: Potterton/Baxi compact-control revisions use the LP/hP/cP/dP state names; confirm the fascia revision before entering installer parameters.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / firing test
Enter: Enter the installer test/parameter function on the boiler control and activate the combustion/chimney-sweep test.
Select output / test: For System/Heat appliances use the CH minimum and CH maximum firing states only; DHW states used on the combi version do not apply.
Exit: Cancel the test/installer function and return to normal operation.
Revision note: Assure System/Heat share controls with the wider BDR Thermea platform but have model-specific fascia/parameter layouts; this page does not invent combi-only DHW states for them.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / firing test
Enter: Enter the installer test/parameter function on the boiler control and activate the combustion/chimney-sweep test.
Select output / test: For System/Heat appliances use the CH minimum and CH maximum firing states only; DHW states used on the combi version do not apply.
Exit: Cancel the test/installer function and return to normal operation.
Revision note: Assure System/Heat share controls with the wider BDR Thermea platform but have model-specific fascia/parameter layouts; this page does not invent combi-only DHW states for them.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These conventional Potterton boilers do not use the later digital installer/chimney-sweep menu. A service firing check is made by operating the boiler on a normal heat demand.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These conventional Potterton boilers do not use the later digital installer/chimney-sweep menu. A service firing check is made by operating the boiler on a normal heat demand.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Commissioning / firing check
Enter: There is no separate front-panel electronic chimney-sweep or engineer-mode sequence used for this older control family.
Select output / test: For a firing check, create a normal central-heating demand (or a hot-water demand on a combi) and allow the burner to run under the appliance’s normal controls. There is no hidden minimum/maximum test menu to select on the fascia.
Exit: Remove the demand or return the normal user controls to their previous settings.
Revision note: These conventional Potterton boilers do not use the later digital installer/chimney-sweep menu. A service firing check is made by operating the boiler on a normal heat demand.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service / commissioning test
Enter: No separate manufacturer quick-entry chimney-sweep sheet is published for this control family, so this page does not invent a button combination.
Select output / test: Use a normal CH/DHW demand for a firing check. Where the control offers an installer test function, the model/revision-specific reference PDF below remains the authoritative source for that internal function.
Exit: Cancel the demand and return the boiler to its normal operating screen.
Revision note: These ranges cover multiple Potterton/Baxi control generations. The page does not apply the later Assure P09 sequence to them unless that exact control revision is confirmed.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service test / service selector
Enter: Open the controls access and place the service-mode selector in its service/test position using the proper service control/tool for the appliance revision.
Select output / test: The burner is held in the service firing condition indicated by the boiler status light/display so the engineer can perform the firing check.
Exit: Return the service selector fully to its normal operating position and refit the controls cover.
Revision note: Suprima and Suprima HE had control revisions; use the status indication on the appliance as the cross-check before leaving the selector in service mode.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service test / service selector
Enter: Open the controls access and place the service-mode selector in its service/test position using the proper service control/tool for the appliance revision.
Select output / test: The burner is held in the service firing condition indicated by the boiler status light/display so the engineer can perform the firing check.
Exit: Return the service selector fully to its normal operating position and refit the controls cover.
Revision note: Suprima and Suprima HE had control revisions; use the status indication on the appliance as the cross-check before leaving the selector in service mode.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Function (P09)
Enter: Enter the installer parameter menu and set P09 = 01. The chimney-sweep test becomes active.
Select output / test: The display cycles through the firing states: LP minimum DHW, hP minimum CH, cP maximum CH and dP maximum DHW. Use the DHW temperature +/− keys to move between the states.
Exit: Set P09 back to 00 / cancel the test and return to normal operation.
Revision note: Potterton/Baxi compact-control revisions use the LP/hP/cP/dP state names; confirm the fascia revision before entering installer parameters.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Vaillant boiler family below. Only direct manufacturer-hosted technical PDFs that could be verified are included; no third-party manual sites are used.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter the installer level and open Check programmes.
Select output / test: Select P.01 for maximum-load operation or P.02 for minimum-load operation.
Exit: End the check programme and return to the normal display.
Revision note: ecoCRAFT commercial controls use the same Vaillant P-programme terminology but the physical keys differ from domestic ecoTEC fascias.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level → Test modes → Check programmes
Enter: Open MENU → SETTINGS → Installer level and enter access code 17. Then open Test modes → Check programmes.
Select output / test: Select P.001 and choose the required burner load; confirm to run the check programme.
Exit: Back out of Check programmes/Installer level to the basic display or stop the running programme.
Revision note: Current ecoTEC plus uses the newer P.001 numbering; older ecoTEC below uses P.01/P.02.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter Installer level using competent-person code 17, then open the Check programmes menu.
Select output / test: On these ecoTEC/ecoFIT generations use P.01 for the burner-output check (maximum or adjustable depending revision) and P.02 for the minimum/ignition-load check where provided.
Exit: Cancel the running check programme and back out to the normal operating display.
Revision note: ecoFIT, ecoTEC pro, sustain and legacy ecoTEC plus share the P-programme concept; wording and whether P.01 is fixed or adjustable varies by production generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Installer level / Check programmes
Enter: Enter the installer level (competent-person access) and open Check programmes.
Select output / test: Use P.01 for an adjustable burner-output test from minimum to maximum; where listed, the dedicated maximum-output check programme can also be selected.
Exit: Cancel the check programme or return through the installer menu to the normal display.
Revision note: Check programmes time out automatically; this quick reference does not include gas-adjustment parameters.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Viessmann boiler family below. Only direct manufacturer-hosted technical PDFs that could be verified are included; no third-party manual sites are used.
Manufacturer terminology: Service menu / burner output test
Enter: Press and hold MENU + OK together for about 4 seconds to open the Service menu.
Select output / test: Open b.6 (burner output test) and select the lower or upper heating output as required.
Exit: Back out of b.6 / the Service menu to the normal display. The service function also exits after inactivity on applicable versions.
Revision note: Vitodens 025/050/100/111 controls have software revisions; b.6 is the burner-output test on the current HBMU-based family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu / burner output test
Enter: Press and hold MENU + OK together for about 4 seconds to open the Service menu.
Select output / test: Open b.6 (burner output test) and select the lower or upper heating output as required.
Exit: Back out of b.6 / the Service menu to the normal display. The service function also exits after inactivity on applicable versions.
Revision note: Vitodens 025/050/100/111 controls have software revisions; b.6 is the burner-output test on the current HBMU-based family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu / burner output test
Enter: Press and hold MENU + OK together for about 4 seconds to open the Service menu.
Select output / test: Open b.6 (burner output test) and select the lower or upper heating output as required.
Exit: Back out of b.6 / the Service menu to the normal display. The service function also exits after inactivity on applicable versions.
Revision note: Vitodens 025/050/100/111 controls have software revisions; b.6 is the burner-output test on the current HBMU-based family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu / burner output test
Enter: Press and hold MENU + OK together for about 4 seconds to open the Service menu.
Select output / test: Open b.6 (burner output test) and select the lower or upper heating output as required.
Exit: Back out of b.6 / the Service menu to the normal display. The service function also exits after inactivity on applicable versions.
Revision note: Vitodens 025/050/100/111 controls have software revisions; b.6 is the burner-output test on the current HBMU-based family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu / burner output test
Enter: Press and hold MENU + OK together for about 4 seconds to open the Service menu.
Select output / test: Open b.6 (burner output test) and select the lower or upper heating output as required.
Exit: Back out of b.6 / the Service menu to the normal display. The service function also exits after inactivity on applicable versions.
Revision note: Vitodens 025/050/100/111 controls have software revisions; b.6 is the burner-output test on the current HBMU-based family.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu → Actuator test
Enter: Press OK + MENU together for about 4 seconds to open the Service menu, then choose Actuator test.
Select output / test: Choose Base load for low-fire operation or Full load for high-fire operation and switch the selected actuator test on.
Exit: Switch the actuator test off and use Back/Return to leave the Service menu.
Revision note: Menu wording varies slightly by Vitodens software generation; domestic 200-W, commercial 200-W and 222-F use the same service-menu/actuator-test principle.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu → Actuator test
Enter: Press OK + MENU together for about 4 seconds to open the Service menu, then choose Actuator test.
Select output / test: Choose Base load for low-fire operation or Full load for high-fire operation and switch the selected actuator test on.
Exit: Switch the actuator test off and use Back/Return to leave the Service menu.
Revision note: Menu wording varies slightly by Vitodens software generation; domestic 200-W, commercial 200-W and 222-F use the same service-menu/actuator-test principle.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service menu → Actuator test
Enter: Press OK + MENU together for about 4 seconds to open the Service menu, then choose Actuator test.
Select output / test: Choose Base load for low-fire operation or Full load for high-fire operation and switch the selected actuator test on.
Exit: Switch the actuator test off and use Back/Return to leave the Service menu.
Revision note: Menu wording varies slightly by Vitodens software generation; domestic 200-W, commercial 200-W and 222-F use the same service-menu/actuator-test principle.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Select a Worcester Bosch boiler family below. Only direct manufacturer-hosted technical PDFs that could be verified are included; no third-party manual sites are used.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold OK / the chimney-sweeper key for at least 5 seconds. Chimney Sweep Mode starts at maximum output.
Select output / test: Press the down arrow to select minimum output; use the display percentage/symbol as confirmation.
Exit: Press OK again. The function also ends automatically after its service timeout.
Revision note: On Greenstar 2000 the manual identifies OK as the chimney-sweeper key; 1000 uses the same control principle.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep Mode
Enter: Press and hold OK / the chimney-sweeper key for at least 5 seconds. Chimney Sweep Mode starts at maximum output.
Select output / test: Press the down arrow to select minimum output; use the display percentage/symbol as confirmation.
Exit: Press OK again. The function also ends automatically after its service timeout.
Revision note: On Greenstar 2000 the manual identifies OK as the chimney-sweeper key; 1000 uses the same control principle.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Mode / Chimney Sweep Mode
Enter: Hold the Heating + Hot Water buttons together for about 3 seconds to enter Service Mode. Then hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the arrow controls to select the required minimum or maximum firing output shown on the display.
Exit: Press OK/Back to leave the chimney-sweep test and return to the normal display.
Revision note: The 4000 uses the text/service-menu control rather than the older dedicated chimney-sweep key.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Menu / Chimney Sweep Mode
Enter: Press the Hot Water + Heating buttons together until the Service Menu appears. Hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the menu/arrows to choose the required firing output (minimum/maximum as offered by that model).
Exit: Press Back/OK to leave the test and then exit the Service Menu.
Revision note: Life, Style, 8000+, 8000+ Style and 8000 F have slightly different fascia artwork but use the same service-menu concept.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Menu / Chimney Sweep Mode
Enter: Press the Hot Water + Heating buttons together until the Service Menu appears. Hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the menu/arrows to choose the required firing output (minimum/maximum as offered by that model).
Exit: Press Back/OK to leave the test and then exit the Service Menu.
Revision note: Life, Style, 8000+, 8000+ Style and 8000 F have slightly different fascia artwork but use the same service-menu concept.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Menu / Chimney Sweep Mode
Enter: Press the Hot Water + Heating buttons together until the Service Menu appears. Hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the menu/arrows to choose the required firing output (minimum/maximum as offered by that model).
Exit: Press Back/OK to leave the test and then exit the Service Menu.
Revision note: Life, Style, 8000+, 8000+ Style and 8000 F have slightly different fascia artwork but use the same service-menu concept.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Menu / Chimney Sweep Mode
Enter: Press the Hot Water + Heating buttons together until the Service Menu appears. Hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the menu/arrows to choose the required firing output (minimum/maximum as offered by that model).
Exit: Press Back/OK to leave the test and then exit the Service Menu.
Revision note: Life, Style, 8000+, 8000+ Style and 8000 F have slightly different fascia artwork but use the same service-menu concept.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service Menu / Chimney Sweep Mode
Enter: Press the Hot Water + Heating buttons together until the Service Menu appears. Hold OK for about 5 seconds to start Chimney Sweep Mode.
Select output / test: Use the menu/arrows to choose the required firing output (minimum/maximum as offered by that model).
Exit: Press Back/OK to leave the test and then exit the Service Menu.
Revision note: Life, Style, 8000+, 8000+ Style and 8000 F have slightly different fascia artwork but use the same service-menu concept.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Service level / output test
Enter: Press and hold the orange Service button for about 10 seconds until the service display appears.
Select output / test: Use the service-function navigation (Eco moves up; Holiday moves down) to reach the output-test function, then use the CH temperature control to select the required low/high test state.
Exit: Leave the service function / reset to return the display to normal.
Revision note: CDi Classic had several control revisions; confirm the service-function number shown on the appliance before selecting an output test.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Burner service / combustion run
Enter: These are oil appliances and do not use the gas-boiler electronic chimney-sweep menu. Put the appliance into a normal heat demand so the burner runs continuously for the service check.
Select output / test: Use the burner’s normal service/commissioning controls for the required firing check; there is no front-panel min/max chimney-sweep button sequence to select.
Exit: Remove the demand and return the appliance/system controls to normal.
Revision note: Oil burner setup is burner-specific and is intentionally not reproduced as a gas-boiler-style service-mode shortcut.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Burner service / combustion run
Enter: These are oil appliances and do not use the gas-boiler electronic chimney-sweep menu. Put the appliance into a normal heat demand so the burner runs continuously for the service check.
Select output / test: Use the burner’s normal service/commissioning controls for the required firing check; there is no front-panel min/max chimney-sweep button sequence to select.
Exit: Remove the demand and return the appliance/system controls to normal.
Revision note: Oil burner setup is burner-specific and is intentionally not reproduced as a gas-boiler-style service-mode shortcut.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Burner service / combustion run
Enter: These are oil appliances and do not use the gas-boiler electronic chimney-sweep menu. Put the appliance into a normal heat demand so the burner runs continuously for the service check.
Select output / test: Use the burner’s normal service/commissioning controls for the required firing check; there is no front-panel min/max chimney-sweep button sequence to select.
Exit: Remove the demand and return the appliance/system controls to normal.
Revision note: Oil burner setup is burner-specific and is intentionally not reproduced as a gas-boiler-style service-mode shortcut.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Burner service / combustion run
Enter: These are oil appliances and do not use the gas-boiler electronic chimney-sweep menu. Put the appliance into a normal heat demand so the burner runs continuously for the service check.
Select output / test: Use the burner’s normal service/commissioning controls for the required firing check; there is no front-panel min/max chimney-sweep button sequence to select.
Exit: Remove the demand and return the appliance/system controls to normal.
Revision note: Oil burner setup is burner-specific and is intentionally not reproduced as a gas-boiler-style service-mode shortcut.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Chimney Sweep / Service Mode
Enter: Press and hold the dedicated service/chimney-sweep button for at least 5 seconds. The service symbol appears and the boiler enters the firing test, normally at maximum rate.
Select output / test: Use the CH/down control to select minimum output where offered; return to maximum with the corresponding up/control key.
Exit: Press the same service/chimney-sweep key again (or Reset/Back on that fascia) to return to normal operation.
Revision note: This applies to the Greenstar i, Si Compact, Ri and Highflow/CDi Highflow control families; the service-button symbol differs by fascia generation.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer terminology: Burner service / combustion run
Enter: These are oil appliances and do not use the gas-boiler electronic chimney-sweep menu. Put the appliance into a normal heat demand so the burner runs continuously for the service check.
Select output / test: Use the burner’s normal service/commissioning controls for the required firing check; there is no front-panel min/max chimney-sweep button sequence to select.
Exit: Remove the demand and return the appliance/system controls to normal.
Revision note: Oil burner setup is burner-specific and is intentionally not reproduced as a gas-boiler-style service-mode shortcut.
Manufacturer reference: The PDF button(s) below are retained as the source/reference for this quick procedure and for the full commissioning and servicing information.
Manufacturer technical-document links checked during preparation in September 2026. Boiler controls and software can vary by production date, so always match the instructions to the exact appliance and data plate.