Vokera boiler service mode

Compact A High efficiency combi boiler

Covers: Compact 25A, Compact 29A

GC 47-364-17, 47-364-18

Entering Service / Combustion Analysis Mode

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Locate and open the closing plug on the dash board (L2).
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Locate and press the CO button (SW1) the required number of times to select the desired output (once = maximum heating, twice = maximum DHW, three times = minimum output).
5. The display shows 'ACO' and the appliance operates in the selected mode for 15 minutes.

From manual 20072155, page 25.

Forcing Maximum and Minimum Rate (CO Function Settings)

1. Press CO button once: burner runs at maximum heating (Display: ACO)
2. Press CO button twice: burner runs at maximum DHW (Display: ACO)
3. Press CO button three times: burner runs at minimum (Display: ACO)

From manual 20072155, page 28.

CO₂ and CO from manual 20072155, page 11, 35. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with Vokera technical. (page 39)

EASI-HEAT i High efficiency combi boiler

Covers: EASI-HEAT i 25C

GC 47-364-71

Enter Password and Access Service/Installer Parameters

1. Press and hold the settings (gear) key for 2 seconds until the display shows 004 (USER LEVEL)
2. Press and hold the settings (gear) key a second time for 2 seconds until the display shows PAS, 000 (INSTALLER/SERVICE level)
3. Enter the password (18 for INSTALLER, 53 for SERVICE) using the + and - buttons
4. Confirm the password by pressing the settings (gear) key
5. Choose the parameter using the + and - buttons
6. Access the chosen parameter by pressing the settings (gear) key
7. Modify the parameter value using the + and - buttons
8. Confirm the new value by pressing the settings (gear) key to return to the previous level

From manual Cod. 20195442, page 4.

CO₂ and CO from manual Cod. 20195442, page 12, 26. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 39)

Easi-Heat Plus C High efficiency combi boiler

Covers: Easi-Heat Plus 25C, Easi-Heat Plus 25C (47-364-33), Easi-Heat Plus 29C, Easi-Heat Plus 29C (47-364-34)

GC 47-364-29, 47-364-30, 47-364-33, 47-364-34

Enter Service Mode (CO Function)

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
3. Have access to the printed circuit board, locate and open the closing plug on the dash board (L2).
4. Locate and press the CO button (SW1) using the supplied screwdriver.
5. Press the button according to the function requirement: press once for maximum heating (yellow led blinking), press twice for maximum DHW (yellow led blinking + red led fixed), press three times for minimum (yellow led blinking + green led fixed).

From manual Cod. 20120999 - 02/17 - Ed. 1, page 22.

Exit Service Mode

1. Move the mode selector through the OFF/standby position.
2. Remove the test probe from the test point and refit the sealing screw/s and/or cap.
3. Refit the plug (L2) on the dashboard.

From manual Cod. 20120999 - 02/17 - Ed. 1, page 23.

CO₂ and CO from manual Cod. 20120999 - 02/17 - Ed. 1, page 9, 29. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 30)

Easi-Heat Plus S

Covers: Easi-Heat Plus 30S

GC 41-364-04

Entering CO / Service Mode

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
3. Have access to the printed circuit board, locate and open the closing plug on the dash board (L2).
4. Locate and press the CO button (SW1) using the supplied screwdriver according to the function requirement.

From manual Cod. 20136921, page 24.

CO₂ and CO from manual Cod. 20136921, page 9, 31. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 32)

Eclipse ESS

Covers: Eclipse ESS

GC 41-094-10

Force Max & Min Fan Speed (Output Rate)

1. Access engineer mode.
2. To adjust Maximum fan speed: Press the STEP button until it shows the letter 'J' (LED 1), adjust the value (LED 2) using the +/- buttons, press STORE.
3. To adjust Minimum fan speed: Press the STEP button until it shows the letter 'N' (LED 1), adjust the value (LED 2) using the +/- buttons, press STORE.

From manual Cod. 10022447, page 16.

THE GAS VALVE MUST BE SET-UP OR ADJUSTED WITH THE AID OF A PROPERLY CALIBRATED FLUE GAS ANALYSER. THE GAS VALVE MUST BE CHANGED AS COMPLETE UNIT. (page 16)

evolve High efficiency system boiler

Covers: Evolve 18S, Evolve 24S, Evolve 30S, Evolve 35S

GC 41-094-98, 41-094-99, 41-364-01, 41-364-02

Entering Service Mode / Sweeper Function

1. Ensure that the electrical supply to the appliance is switched ON.
2. Set the status of the boiler to OFF (power icon).
3. Access the technical parameters as explained in section 8.
4. Select SWEEPER with the "up" and "down" keys, confirming the selection.
5. Select ACTIVATE FUNCTION with the "up" and "down" keys, confirming the selection.
6. Note: the sweeper function can also be activated by pressing the SW1 key on the electronic board AKM (this requires removing the plug (C) from the cover of the instrument panel to access the electrical components).

From manual Cod. 20127584, page 37.

Forcing Maximum and Minimum Rate (Sweeper Function)

1. Once the sweeper function is activated, the boiler will operate at maximum heating output.
2. To check minimum or change fan speed during sweeper mode, access the SWEEPER menu where MAX SPEED, RANGE RATED SPEED, MIN SPEED, and CHANGE FAN SPEED can be adjusted.

From manual Cod. 20127584, page 21.

CO₂ and CO from manual Cod. 20127584, page 15, 56. Check against the data badge.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components. (page 37)

Excel 29

Covers: Excel 25, Excel 29

GC 47-364-12, 47-364-13

Enter Service Mode (CO Function)

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
3. Have access to the printed circuit board, locate and open the closing plug on the dash board (L2).
4. Locate and press the CO button (SW1) the required number of times: press once for maximum heating (yellow led blinking), press twice for maximum DHW (yellow led blinking + red led fixed), press three times for minimum rate (yellow led blinking + green led fixed).

From manual Cod. 20097428 - 11/16 - Ed. 2, page 24.

Exit Service Mode / Completion

1. On completion of the combustion analysis check and/or any gas valve adjustment, refit the plug (L2).
2. Move the mode selector through the OFF/standby position to restart normal operation.
3. Remove the test probe from the test point and refit the sealing screw/s and/or cap.

From manual Cod. 20097428 - 11/16 - Ed. 2, page 25.

CO₂ and CO from manual Cod. 20097428 - 11/16 - Ed. 2, page 9, 31. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 32)

Linea

Covers: Linea 726

GC 47-094-40

Entering Combustion Analysis Test Mode (CO Mode)

1. Insert the flue gas analyser probe into the right hand test point.
2. Locate and remove the protective cap that conceals the CO mode button.
3. Light the boiler and press the CO mode button once.
4. The boiler will enter the combustion analysis mode for a period of 15 minutes, remaining on full gas with CO displayed.
5. Press the CO mode button again to resume normal operations once the analysis is complete.

From manual Cod. 10024467, page 29.

Linea 24 & 28

Covers: Linea Plus

GC 47-094-29

Entering Combustion Test Mode

1. Ensure gas pressures are set accurately.
2. Remove combustion switch cap on front control panel by turning 1/4 turn to disengage.
3. Unscrew flue gas analysis test point and insert probe.
4. Lightly press the black toggle behind the combustion switch cap once only using a screwdriver.
5. The digital display will show CO to confirm combustion test mode and fire the appliance at maximum rate in central heating.

From manual Cod. 10023216, page 31.

The heat inputs for high and low gas rates are factory set to the maximum values given in section 3.6 for domestic hot water and central heating but it is necessary to check them when commissioning. (page 18)

Linea One

Covers: Linea One

GC 47-364-03

Enter Service Mode & Parameters

1. Put the boiler in the OFF position: press the standby key until "ENERGY FOR LIFE" scrolls across the display.
2. Hold down the i key, then press the ENTER key for about 3 seconds.
3. The display shows PROG, then CODE. Press ENTER.
4. Enter the password by turning selector A to the value required, and confirm with ENTER. The password is printed on the back of the control panel.
5. Turn selector A to scroll the two-digit parameter codes.
6. Press ENTER to open a value (it flashes), turn selector A to change it, press ENTER to store it.
7. Press ESCAPE to exit. The boiler returns to off mode; press the standby key to resume.

From manual 20019457, page 27.

CO₂ and CO from manual 20019457, page 7, 40. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. (page 17)

MAXIM High efficiency combi boiler

Covers: Maxim 25, Maxim 29

GC 47-364-31, 47-364-32

Entering Service Mode / CO Function

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Restore the electrical supply to the boiler and switch the boiler to the OFF mode (mode selector switch to OFF/standby position).
3. Have access to the printed circuit board, locate and open the closing plug on the dash board (L2).
4. Locate and press the CO button (SW1) using the supplied screwdriver to push the button according to the function requirement.

From manual Cod. 20117228 - 03/17 - Ed. 2, page 22.

Forcing Maximum and Minimum Rate (CO2 Function Settings)

1. Press CO button (SW1) once: burner runs at maximum heating (yellow led blinking).
2. Press CO button (SW1) twice: burner runs at maximum DHW / gas valve maximum setting (yellow led blinking + red led fixed).
3. Press CO button (SW1) three times: burner runs at minimum / gas valve minimum setting (yellow led blinking + green led fixed).
4. Note: Any additional pressing after the third time switches the burner between maximum DHW and minimum. To restart the CO function it is necessary to pass through the OFF position with the main selector switch.

From manual Cod. 20117228 - 03/17 - Ed. 2, page 22.

CO₂ and CO from manual Cod. 20117228 - 03/17 - Ed. 2, page 9, 29. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 30)

Mynute 20VHE System

Covers: Mynute 20VHE

GC 41-094-70

Entering CO / Service Mode

1. Remove the 3-selector knobs.
2. Locate and press the CO button.
3. The appliance will now operate in CO mode for approximately 15-minutes.

From the installation and servicing manual, page 23.

Force Max & Min Rate (Gas Valve Adjustment)

1. Enter CO mode via the CO button.
2. Turn the HTG trimmer to the maximum value to obtain maximum rate, and adjust the maximum adjustment screw on the gas valve if CO2 requires correction.
3. Turn the HTG trimmer to the minimum value to obtain minimum rate, and adjust the minimum adjustment screw (using a 2.5mm Allen key) if CO2 requires correction.
4. On completion, set the HTG trimmer to the corresponding value as detailed in the fan speed table and move the mode selector to the OFF position.

From the installation and servicing manual, page 23.

CO₂ and CO from the installation and servicing manual, page 6, 36. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. (page 17)

Mynute HE High efficiency system boiler (manual 10028541)

Covers: Mynute 25 HE

GC 41-094-60

Entering CO / Service Mode and Adjusting Fan Speeds

1. Move the selector switch to the OFF position and remove the 3 selector knobs.
2. Locate and press the CO button to operate the appliance in CO mode for approximately 15 minutes.
3. Locate the MAX, MIN, IGN, and HTG trimmers and adjust clockwise or counter-clockwise to achieve the correct fan speed.
4. On completion, set the HTG trimmer to the corresponding value as detailed in the fan speed table, refit the 3-selector knobs, and move the mode selector to the OFF position.

From manual 10028541, page 23.

CO₂ and CO from manual 10028541, page 6, 38. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. (page 16)

Mynute HE High efficiency system boiler (manual Cod. 10028541 - 21/06 - Ed. 1)

Covers: Mynute HE

Entering CO Function (Service Mode)

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Set the flue gas analyser to read CO2 and insert the probe into the flue analysis test point.
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Ensure that the fan speed potentiometers (trimmers) have been set correctly.
5. Remove the 3-selector knobs, locate and press the CO button.
6. The appliance will now operate in CO mode for approximately 15-minutes.

From manual Cod. 10028541 - 21/06 - Ed. 1, page 24.

Exiting Service Mode

1. On completion of the combustion analysis check and/or any gas valve adjustment, set the HTG trimmer to the corresponding value as detailed in the fan speed table.
2. Refit the 3-selector knobs and move the mode selector to the OFF position.
3. Remove the test probe from the test point and refit the sealing screw/s and/or cap.

From manual Cod. 10028541 - 21/06 - Ed. 1, page 24.

CO₂ and CO from manual Cod. 10028541 - 21/06 - Ed. 1, page 6, 38. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. However to satisfy the requirements of GSIUR 26/9 (I.S. 813 ROI), it will be necessary to gas rate the appliance using the gas meter that serves the appliance. (page 18)

Mynute i High efficiency system boiler

Covers: Mynute i20, Mynute i30

GC 41-094-81, 41-094-82

Enter service / combustion analysis mode

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Locate and open the closing plug on the dash board (L2).
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Locate and press the CO button (SW1). Press the button according to the function requirement: press once for combustion analysis mode (maximum heating), press twice for maximum absolute, press three times for minimum.

From manual Cod. 20073574, page 24.

CO₂ and CO from manual Cod. 20073574, page 29, 31. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 38)

Pinnacle 16 (System)

Covers: Pinnacle 16, Pinnacle 26

GC 41-094-23, 41-094-24

Entering Service Mode

1. Press and hold the mode and S buttons simultaneously for 2 seconds
2. When “COdE” appears in the display, press S again, “C” should now be shown on the left side of the display, with a random number on the right side of the display
3. Using the + or - buttons, scroll until “05” is shown in the right side of the display
4. Press M to store the code
5. Press reset to exit the service mode

From the installation and servicing manual, page 22.

Force Max & Min Rate for Combustion Check / Gas Valve Adjustment

1. Press the mode and - buttons at the same time to run at minimum power for 15 minutes
2. Press the mode and + buttons at the same time to run at maximum power for 15 minutes

From the installation and servicing manual, page 22.

CO₂ and CO from the installation and servicing manual, page 5. Check against the data badge.

PINNACLE High efficiency combi boiler

Covers: Pinnacle 25C, Pinnacle 30C, Pinnacle 35C

GC 47-364-79, 47-364-80, 47-364-81

Enter Service Menu / Chimney Sweep

1. Access the Technical Menu by entering security password 18.
2. Select Service.
3. Select Chimney sweep to carry out combustion analysis (only with the boiler in the OFF position).

From manual Cod. 20208435 - 07/24 - Ed. 0, page 5.

Alternative Chimney Sweep Shortcut

1. Holding down the heating and Wi-Fi keys will take you to the chimney sweep function page without going through the password-protected technical menu.

From manual Cod. 20208435 - 07/24 - Ed. 0, page 26.

CO₂ and CO from manual Cod. 20208435 - 07/24 - Ed. 0, page 11, 45. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 46)

PINNACLE High efficiency system boiler

Covers: Pinnacle 20S, Pinnacle 25S, Pinnacle 32S

GC 47-364-25, 47-364-26, 47-364-27

Chimney sweep / Combustion analysis mode

1. Hold down the heating and Wi-Fi keys to go directly to the chimney sweep function page without going through the password-protected technical menu
2. Alternatively, access via Service menu -> Chimney sweep -> 'Start Combustion analysis now?' and press the 'OK' button
3. Press the MIN, RATED or MAX buttons (or use the up/down RPM arrows) to set the boiler to operate at minimum, rated or maximum output as needed

From manual Cod. 20208437, page 26.

Manual Calibration Procedure (GAC)

1. Power up the boiler and wait for the vent cycle to run (see paragraph section 5.8).
2. If in the OFF condition, set the boiler to WINTER.
3. Generate a HEAT request, ideally with boiler return system water below 15°C or compatible with system flow rate.
4. Wait until the flame symbol appears on the display. No key must be pressed at this stage.
5. Navigate to Combustion -> Gac, reaching the 'Perform full calibration?' screen.
6. Press the OK button to confirm 'Perform full calibration?'
7. Wait through the 'Please wait' screen and the calibration in progress (RPM) screen.
8. Wait for the 'Calibration carried out successfully' message.

From manual Cod. 20208437, page 24.

CO₂ and CO from manual Cod. 20208437, page 11, 26, 44. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 45)

Synergy Combi Boiler

Covers: Synergy 25C, Synergy 30C, Synergy 35C

GC 47-364-76, 47-364-77, 47-364-78

Accessing Technical Parameters (Installer & Service Level)

1. Press and hold button 3 for approximately 2 seconds to enter USER LEVEL.
2. Perform second long press to enter INSTALLER and SERVICE level.
3. Use keys C or D to set the password (18 for Installer) and confirm setting with key A.
4. Access the desired menu (e.g., P1, P2, P3, P4, P5, P7, P8) using keys C or D and confirm using key A.
5. Select the required parameter and modify values using keys C and D, then confirm.

From manual Cod. 20208493, page 29.

Activating Chimney Gas Analysis Function (CO)

1. Ensure the boiler is set to OFF.
2. Press buttons 2 and 3 simultaneously to activate the flue gas analysis function (CO).
3. Use the display controls to select maximum or minimum fan speed to force max/min rate.
4. To exit the function, press key B.

From manual Cod. 20208493, page 3.

CO₂ and CO from manual Cod. 20208493, page 9, 25. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 43)

Unica

Covers: Unica 28 HE, Unica 36HE

GC 47-094-83, 47-094-87

Force Max & Min Fan Speed Rate via Trimmers

1. Locate the MAX trimmer and adjust to achieve the absolute max fan speed (6300 RPM for 36HE).
2. Locate the MIN trimmer and adjust to achieve the absolute min fan speed (1400 RPM for 36HE).
3. Locate the HTG trimmer and adjust to set heating/maximum and minimum test fan speeds (5200 RPM for 36HE heating).

From manual Cod. 10028635, page 24.

CO₂ and CO from manual Cod. 10028635, page 6, 36. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. However... if the gas valve has been adjusted, replaced, or the appliance has been converted for use with another gas type, then it becomes necessary to carry out a combustion analysis/check. (page 18)

Unica i28 - i32 - i36 High efficiency combi boiler

Covers: Unica i36

GC 47-364-16

Entering Service Mode (CO Function)

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Set the flue gas analyser to read CO2 and insert the probe into the flue analysis test point.
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Access the printed circuit board, locate and open the closing plug on the dash board (Q2), locate and press the CO button (SW1) the required number of times.

From manual Cod. 20097373, page 27.

Forcing Maximum and Minimum Rate (CO2 Function Settings)

1. Press CO button once: burner runs at maximum heating (Display: ACO)
2. Press CO button twice: burner runs at maximum DHW (Display: ACO)
3. Press CO button three times: burner runs at minimum (Display: ACO)

From manual Cod. 20097373, page 28.

CO₂ and CO from manual Cod. 20097373, page 11, 33. Check against the data badge.

THE GAS VALVE MUST BE SET-UP OR ADJUSTED WITH THE AID OF A PROPERLY CALIBRATED FLUE GAS ANALYSER. The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 29)

UNICA MAX Combi

Covers: Unica MAX 30C

GC 47-364-75

Enter Combustion Analysis (Service Mode)

1. Ensure electrical supply is ON.
2. Set the status of the boiler to OFF via the STATE menu.
3. Navigate to TECHNICAL > COMBUSTION ANALYSIS.
4. Select ACTIVATE FUNCTION and confirm.
5. Alternatively, remove the cap from the control panel and press the SW1 button on the AKM electronic board.

From manual Cod. 20188258, page 38.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components. (page 38)

UNICA MAX High efficiency combi boiler

Covers: Unica MAX 35C, Unica MAX 40C

GC 47-364-61, 47-364-62, 47-364-63, 47-364-64

Entering Combustion Analysis / Service Mode

1. Ensure that the electrical supply to the appliance is switched ON.
2. Set the status of the boiler to OFF.
3. Select TECHNICAL -> COMBUSTION ANALYSIS -> ACTIVATE FUNCTION and confirm.
4. Alternatively, remove the plug (C) from the cover of the instrument panel and press the combustion analysis button SW1 on the electronic board AKM.

From manual Cod. 20188258, page 38.

CO₂ and CO from manual Cod. 20188258, page 13, 48. Check against the data badge.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components. (page 38)

UNICA MAX High efficiency system boiler

Covers: Unica MAX 30S, Unica MAX System

GC 41-364-13, 41-364-14

Activate Combustion Analysis (Sweeper Function)

1. Ensure that the electrical supply to the appliance is switched ON.
2. Set the status of the boiler to OFF.
3. Select TECHNICAL -> COMBUSTION ANALYSIS -> ACTIVATE FUNCTION and confirm.
4. Alternatively, the sweeper function can also be activated by pressing the SW1 key on the electronic board AKM.

From manual Cod. 20188401, page 37.

CO₂ and CO from manual Cod. 20188401, page 13, 48. Check against the data badge.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components. (page 38)

Verve I 50

Covers: Verve I 50

Enter TEST Mode (Service Mode)

1. With the boiler on, simultaneously press the heating function's '+' and '-' buttons for 5 seconds.
2. The letter 't' will appear on the display, and the boiler will set itself to 'TEST' mode.

From manual 2012222, page 33.

Force Max and Min Rate

1. In TEST mode, press the heating function's '+' button: the burner's power level will be set to maximum.
2. In TEST mode, press the heating function's '-' button: the burner's power level will be set to minimum.

From manual 2012222, page 33.

CO₂ and CO from manual 2012222, page 34. Check against the data badge.

The boiler has already been adjusted by the manufacturer. The adjustments indicated in this section must only be performed by qualified personnel. (page 33)

VIBE MAX High efficiency combi boiler

Covers: Vibe MAX 26C, Vibe MAX 30C

GC 47-364-69, 47-364-70

Access Service / Installer Level Parameters

1. Press and hold key 1 for 2 seconds until the display shows 'PAS' and '000'.
2. Use the adjustment keys to enter the service password (53 for SERVICE level, 18 for INSTALLER level).
3. Press ENTER (key 3) to confirm the password and access the first menu parameter.
4. Use keys A and B or C and D to choose and modify parameters as required.
5. Press >2 sec or navigate to exit and return to the main screen.

From manual 20188246, page 4.

CO₂ and CO from manual 20188246, page 12. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 40)

VIBE MAX High efficiency system boiler

Covers: Vibe MAX 25S

GC 41-364-20

Access Service Level Parameters

1. Press and hold key 2 and key 3 together or follow password sequence to enter password entry page.
2. Enter service level password (53).
3. Access parameter setting menu to modify service parameters.

From manual Cod. 20188984 - 10/22 - Ed. 2, page 4.

CO₂ and CO from manual Cod. 20188984 - 10/22 - Ed. 2, page 10, 36. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 37)

VISION PLUS High efficiency combi boiler

Covers: Vision Plus 25 C

GC 47-364-52

Exit Service / Combustion Analysis Mode

1. activate the combustion control function by pressing buttons 2+3 for at least 2sec
2. the display shows the scrolling text CO and the icons up-arrow, down-arrow, right-arrow, and left-arrow come on
3. using the up-arrow, down-arrow keys it is possible to change the fan speed
4. set the max value (rpm) and confirm the choise with right-arrow
5. Set the min value (rpm) and confirm the choise with right-arrow
6. By pressing left-arrow button it is possible to stop function in advance
7. exit the function by pressing the button left-arrow

From the installation and servicing manual, page 38.

CO₂ and CO from the installation and servicing manual, page 13, 47. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 48)

VISION PLUS High efficiency system boiler

Covers: Vision Plus 20 S, Vision Plus 30 S

GC 41-364-06, 41-364-08

Forcing Maximum and Minimum Rate (Adjustments / Range Rating)

1. Power the boiler.
2. Carry out the access procedure to the technical parameters by pressing the MENU key for at least 2 sec, entering the password, and navigating to menu P3.
3. Select parameter P3.06 (min fan speed), P3.07 (max fan speed), P3.08 (soft ignition), P3.09 (max CH fan speed), or P3.10 (Range Rated).
4. Enter the sub-menu by pressing Enter, set the desired values with the arrow keys, and confirm with Enter.

From manual 20174791, page 23.

CO₂ and CO from manual 20174791, page 13, 46. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 47)

Vision S High efficiency system boiler

Covers: Vision 25S

GC 41-094-77, 41-094-86

Entering Service / Combustion Analysis Mode

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Locate and open the closing plug on the dash board (L2).
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Press the CO button (SW1) the number of times according to the function requirement: press once for combustion analysis mode (maximum heating, ACO), press twice for maximum absolute setting (ACO), press three times for minimum setting (ACO).

From manual Cod. 20099350, page 25.

Exiting Service Mode

1. Refit the plug (L2) and move the mode selector through the OFF/RESET position.
2. Remove the test probe from the test point and refit the sealing screw/s and/or cap.

From manual Cod. 20099350, page 25.

CO₂ and CO from manual Cod. 20099350, page 10, 34. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 36)

Vokera Eclipse ESC

Covers: Eclipse ESC

GC 47-094-24

Checking / Adjusting Fan Speeds in Service Mode

1. Allow the boiler to purge and preheat the DHW heat exchanger.
2. Press and hold the MODE and STEP buttons simultaneously until LED 1 shows ‘C'.
3. Whilst continuing to hold down the MODE and STEP buttons, use the +/- buttons to adjust LED 2 until it shows ‘33'.
4. Press STORE.
5. LED 2 will now flash once; release the MODE and STEP buttons.
6. Press the MODE button until it shows a fixed decimal point.
7. Press the STEP button to select the fan speed parameter ('J' for CH max, 'L' for DHW max, 'N' for minimum, 'O' for soft-light).
8. Adjust the value using the +/- buttons and press STORE.
9. Press the RESET button to exit the appliance engineer mode.

From manual 10022484, page 22.

Vokera evolve High efficiency combi boiler

Covers: Evolve 24C, Evolve 28C, Evolve 32C, Evolve 36C

GC 47-364-37, 47-364-38, 47-364-39, 47-364-40, 47-364-56

Enter Service / Technical Parameters Mode

1. Select MENU on the initial page of the REC10 and press the OK key.
2. Keep the back/esc key and the down key pressed at the same time to enter the password menu (about 5 sec).
3. Using the up key and down key, select the value of the password to access the INSTALLER or SERVICE authorisation level, depending on the level of the tree menu, then press the OK key.
4. Select TECHNICAL with the up key and down key, confirming the selection with the OK key.
5. Access the desired menu and change/view the parameter concerned.

From manual Cod. 20131172, page 24.

Force Maximum Rate (Sweeper / Chimney Sweep Function)

1. Set the status of the boiler to OFF.
2. Access the technical parameters using password 18.
3. Select SWEEPER with the up and down keys, confirming the selection.
4. Select ACTIVATE FUNCTION with the up and down keys and confirm to run at maximum heating output.
5. Alternatively, press the SW1 combustion analysis button on the AKM electronic board.

From manual Cod. 20131172, page 40.

CO₂ and CO from manual Cod. 20131172, page 16, 61. Check against the data badge.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components. (page 41)

Vokera SYNERGY High efficiency system boiler

Covers: Synergy 20S, Synergy 25S, Synergy 32S

GC 41-364-22, 41-364-23, 41-364-24

Entering Service Level / Technical Parameters and Parameter Modification

1. Press the 'reset' button for 2 seconds to enter USER LEVEL.
2. Press the 'reset' button for a second long press to access INSTALLER and SERVICE LEVEL.
3. Use the +/- buttons to enter the password (18) and confirm setting.
4. Select menu parameter using +/- buttons and confirm setting.
5. Access the chosen parameter, change range of the parameter using +/- buttons, and confirm the new value.
6. Return to the previous level or exit from navigation by pressing the 'reset' button for > 2 seconds to return to the main screen.

From manual Cod. 20208494, page 29.

CO₂ and CO from manual Cod. 20208494, page 9, 42. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 43)

Vokèra Linea 24 & 28

Covers: Linea 28

GC 47-094-28

Entering Combustion Test Mode (Forcing Max Rate)

1. Ensure gas pressures are set accurately.
2. Remove combustion switch cap on front control panel by turning 1/4 turn to disengage.
3. Unscrew flue gas analysis test point and insert probe into test point.
4. Using a screwdriver lightly press the black toggle behind the combustion switch cap once only to light the appliance at maximum rate in central heating.
5. Digital display will show CO to confirm combustion test mode.

From manual Cod. 10023216 - 21/02 - Ed. 3, page 31.

Vokèra MAXIN 24e & 28e

Covers: Maxin

GC 47-094-22, 47-094-23

Forcing Minimum and Maximum Rates

1. For maximum rate (DHW mode): Fully open a domestic hot water tap to operate boiler in dhw mode and adjust hot water control knob to maximum.
2. For minimum rate (DHW mode): Reduce the domestic water flow rate to approx. 3-4 litres/min, turn the domestic control knob slowly to minimum. If low flame cannot be established, turn off electricity supply, release modulator coil retaining clip, slide modulator coil off brass rod, and switch on electricity supply.
3. For maximum rate (Central Heating / Range Rating): Turn on heating with control knob set at maximum, wait for burner to reach main flame, and adjust the range rating potentiometer until required pressure is indicated on gauge.
4. For minimum rate (Central Heating): Turn off hot water draw off tap, turn mode selector to heating position, ensure room thermostat/timeclock are calling for heat, and turn range rating potentiometer fully anti-clockwise to set C/H minimum gas pressure using the left hand potentiometer.

From manual Cod. 10022256 - 19/01 - Ed. 1, page 18.

Basic Honeywell VK4105A 1027 1 220/240v CVI (Combined Valve and Ignition). This unit is modified. The modification comprises a coil carried by the main burner regulation screw. For full flame a voltage of approx. 12.5v dc is applied to the coil. For central heating max. rate the max. voltage to the coil is restricted by an on site adjustment of a potentiometer. (page 5)

Vokèra Option

Covers: Option

GC 47-094-32

Enable Combustion Analysis (Forcing Max/Min)

1. Locate and remove combustion test point screw (see fig. 1&16).
2. Insert flue gas analyser probe into combustion test point.
3. Remove mode selector switch knob.
4. Rotate selector shaft clockwise until it can go no further.
5. Wait until the yellow LED begins to flash.
6. Turn the selector shaft back to the heating position.
7. The appliance will fire at maximum output in heating mode for fifteen minutes without modulating until max operating temp is reached.

From manual 10020901, page 23.

Although burner pressure settings are factory set, it is necessary to check them during commissioning. (page 16)

After adjustment to the gas valve, the protective cap should be re-sealed. (page 17)

Vokèra Verve

Covers: Verve

GC 41-094-75

Exit Service Mode

1. Move the mode selector through the OFF/RESET position
2. Refit the plug L2 and remove test probes

From manual Cod. 20040022, page 28.

Force Max & Min Fan Speeds (ADJ Mode)

1. Disconnect power supply
2. Turn heating temperature selector to maximum (position 10)
3. Insert jumpers JP1 and JP3 on the PCB
4. Power up the boiler; display reads 'ADJ'
5. Rotate heating selector to set required RPM (hundreds shown, eg 25 = 2500rpm)
6. Press SW1 (CO) to move to next parameter (Max -> Min -> HTG -> IGN)
7. Remove jumpers JP1 and JP3 to save values

From manual Cod. 20040022, page 27.

CO₂ and CO from manual Cod. 20040022, page 9, 36. Check against the data badge.

The appliance is factory set and requires no additional adjustment once installed. However... if the gas valve has been adjusted, replaced, or the appliance has been converted for use with another gas type, then it becomes necessary to carry out a combustion analysis/check. (page 21)

Gas type and appliance output must be set according to the specific appliance specification. Vokèra accepts no responsibility if the gas type is not correctly adjusted according to the respective appliance specification. (page 25)

Vokèra Vibe High efficiency system boiler

Covers: Vibe 20A, Vibe 25A

GC 41-094-84, 41-094-85

Enter Service / CO Function Mode

1. Isolate the appliance from the electrical supply and remove the appliance casing.
2. Set the flue gas analyser to read CO2 and insert the probe into the flue analysis test point.
3. Restore the electrical supply to the boiler and switch the boiler to the OFF mode.
4. Open the closing plug on the dash board (L2), locate and press the CO button (SW1) using the supplied screwdriver according to the function requirement.

From manual Cod. 20085448, page 23.

Exit Service Mode

1. On completion of the combustion analysis check and/or any gas valve adjustment, refit the plug (L2) and move the mode selector through the OFF position.
2. Remove the test probe from the test point and refit the sealing screw/s and/or cap.

From manual Cod. 20085448, page 23.

CO₂ and CO from manual Cod. 20085448, page 9, 29. Check against the data badge.

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. (page 30)