Vaillant boiler service mode

COMBIcompact

Covers: Combicompact vcw282eh

GC 47-044-18

Forcing Maximum and Minimum Rate (Gas Soundness / Burner Check)

1. Connect a suitable length of plastic tube to the test point (TP).
2. Turn on main switch and heating switch and suck using mouth pressure on the plastic tube to operate the air pressure switch and light the main burner.
3. Squeeze tube to maintain suction whilst carrying out gas soundness test on burner and burner test point connections.

From the installation and servicing manual, page 32.

The main burner pressure is factory set and sealed to 5.1 ± 0.5 mbar (VCW GB 242 EH) and 6.8 ± 0.6 mbar (VCW GB 282 EH). Therefore, it is not necessary to alter the setting during commissioning. (page 33)

COMBIcompact (manual 83 12 83)

Covers: Combi Compact 282EB

Entering Service/Test Mode

1. Remove inner case front panel.
2. Connect a suitable length of plastic tube to the test point (TP, fig. 36).
3. Turn on main switch and heating switch to position 1.
4. Suck using mouth pressure on the plastic tube to operate the air pressure switch and ignite the main burner.
5. Squeeze tube to maintain suction while testing.

From manual 83 12 83, page 32.

The main burner pressure is factory set and sealed. It is not necessary to alter the setting during commissioning. (page )

ecoFIT pure (manual 0020230531_01)

Covers: ecoFIT Pure 825, ecoFIT Pure 830 VUW 306/6-3, ecoFIT Pure 835

GC 47-044-68, 47-044-70, 47-044-74

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press [back] and (i) at the same time. S.xx appears in the display (current unit status).
3. Press [back] to access the installer level. Code and -- appear in the display.
4. Set the value 17 (code) and confirm by pressing [back].
5. Press [back] to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use [+] or [-] to set the required value and confirm by pressing [back].
7. Confirm by pressing [tick].
8. Press [back] to cancel a setting or exit the installer level.

From manual 0020230531_01, page 15.

Using check programmes

1. P.00: Purging check programme (internal pump cyclically actuated).
2. P.01: Maximum load check programme (after successful ignition, product operated at maximum heat input).
3. P.02: Minimum load check programme (after successful ignition, product operated at minimum heat input).
4. P.06: Filling mode check programme (diverter valve to mid-position, burner and pump switched off).

From manual 0020230531_01, page 15.

CO₂ and CO from manual 0020230531_01, page 19. 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 MANUFACTURER. (page 44)

ecoFIT pure (manual 0020230533_01)

Covers: ecoFIT pure 612, ecoFIT pure 615, ecoFIT pure 618, ecoFIT pure 630

GC 41-694-03, 41-694-04, 41-694-05, 41-694-07

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press mode and (i) info at the same time.
3. S.xx appears in the display (current unit status).
4. Press right-arrow to access the installer level.
5. Code and -- appear in the display.
6. Set the value 17 (code) and confirm by pressing right-arrow.
7. Press right-arrow to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
8. Use + plus or - minus to set the required value and confirm by pressing right-arrow.
9. Confirm by pressing tick.
10. Press back to cancel a setting or exit the installer level.

From manual 0020230533_01, page 13.

CO₂ and CO from manual 0020230533_01, page 2, 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 MANUFACTURER. (page 43)

ecoFIT pure (manual 0020230535_01)

Covers: ecoFIT Pure 412 VU 126/6-3 OV, ecoFIT Pure 415 VU 156/6-3 OV, ecoFIT Pure 418, ecoFIT Pure 425, ecoFIT Pure 430 VU 306/6-3 OV

GC 41-694-08, 41-694-09, 41-694-10, 41-694-11, 41-694-12

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press left-arrow and (i) info at the same time.
3. Press right-arrow to access the installer level.
4. Set the value 17 (code) and confirm by pressing tick.
5. Press right-arrow to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use plus or minus to set the required value and confirm by pressing tick.
7. Confirm by pressing tick.
8. Press left-arrow to cancel a setting or exit the installer level.

From manual 0020230535_01, page 14.

CO₂ and CO from manual 0020230535_01, page 22. 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 MANUFACTURER. (page 38)

ecoFIT sustain (manual 0020230529_06)

Covers: ecoFIT sustain 825, ecoFIT sustain 830, ecoFIT sustain 835

GC 47-044-71, 47-044-72, 47-044-73

Access Installer Level

1. Only call up the installer level if you are a competent person.
2. Press 'i' and '-' at the same time. S.xx appears in the display (current unit status).
3. Press 'i' to access the installer level. Code and -- appear in the display.
4. Set the value 17 (code) and confirm by pressing 'i'.
5. Press 'i' to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use '+' or '-' to set the required value and confirm by pressing 'i'.
7. Confirm by pressing (tick).
8. Press '-' to cancel a setting or exit the installer level.

From manual 0020230529_06, page 23.

CO₂ and CO from manual 0020230529_06, page 27. 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 manufacturer. (page 51)

ecoFIT sustain (manual 0020277252_03)

Covers: ecoFIT sustain 630

GC 41-694-32

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press right-arrow and (i) info at the same time. ◁ S.xx appears in the display (current unit status).
3. Press right-arrow to access the installer level. ◁ Code and -- appear in the display.
4. Set the value 17 (code) and confirm by pressing right-arrow.
5. Press right-arrow to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use + or - to set the required value and confirm by pressing right-arrow.
7. Confirm by pressing (✔).
8. Press back to cancel a setting or exit the installer level.

From manual 0020277252_03, page 23.

CO₂ and CO from manual 0020277252_03, page 27. 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 manufacturer. (page )

ecoFIT sustain 415 - 430

Covers: ecoFIT sustain 415, ecoFIT sustain 418, ecoFIT sustain 430

GC 41-694-33, 41-694-34, 41-694-35

Entering Installer Level

1. Press mode and (i) at the same time.
2. Press mode to access the installer level.
3. Set the value 17 (code) and confirm by pressing mode.
4. Press mode to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
5. Use + or - to set the required value and confirm by pressing mode.
6. Confirm by pressing tick symbol.
7. Press mode to cancel a setting or exit the installer level.

From manual 0020277262_04, page 24.

CO₂ and CO from manual 0020277262_04, page 28. Check against the data badge.

Never modify the factory setting of the gas pressure regulator of the gas valve assembly. The CO2 adjusting screw must be sealed. (page 26)

ecoMAX

Covers: ecoMAX 613, ecoMAX 824/2 E, ecoMAX 828/2 E, ecoMAX 835 E

GC 41-044-27

Entering Service / Diagnostic Mode

1. Press the 'i' and '+' buttons below the display simultaneously. The display will show 'd.0'.
2. Use the '+' or '-' buttons to scroll up or down to the desired diagnostic number.
3. Press 'i' button to display the corresponding diagnostic information.

From manual 83 41 77_12, page 35.

Forcing Maximum Rate (Full Gas Rate Mode / Test Program P.1)

1. Activate full gas rate mode by simultaneously pressing the '+' and '-' buttons on the display system (ecoMAX 800, fully open the hot water tap to maximum water flow rate).
2. Wait at least 5 minutes, or until the boiler has reached its operating temperature.

From manual 83 41 77_12, page 37.

Forcing Minimum Rate (Test Program P.2)

1. Test program P.2 is used when the unit runs with minimum gas consumption after successful ignition.
2. Activate by operating the Power ON switch and pressing the '+' button at the same time (and keeping it pressed for five seconds) until 'P.1' appears, then use '+' to select 'P.2' and press 'i' to start.

From manual 83 41 77_12, page 50.

CO₂ and CO from manual 83 41 77_12, page 55. Check against the data badge.

Under no circumstances should the venturi tube be removed and dismantled from the gas valve as this part is sealed and gas checked during production. (page 42)

ecoTEC

Covers: ecoTEC plus 612 R1 VU GB 126/3-5, ecoTEC plus 615 R1 VU GB 156/3-5, ecoTEC plus 618 R1 VU GB 186/3-5, ecoTEC plus 624 R1 VU GB 246/3-5, ecoTEC plus 630 R1 VU GB 306/3-5, ecoTEC plus 637 R1 VU GB 376/3-5, ecoTEC plus 824 R1 VUW GB 246/3-5, ecoTEC plus 831 R1 VUW GB 316/3-5, ecoTEC plus 837 R1 VUW GB 376/3-5, ecoTEC pro 24

GC 41-044-44, 41-044-45, 41-044-46, 41-044-47, 41-044-48, 41-044-49, 41-044-50, 41-044-51, 47-044-31, 47-044-32, 47-044-33, 47-044-34, 47-044-36

Enter first diagnostic level

1. Press the 'i' and '+' keys simultaneously.
2. The display shows 'd.0'.
3. Use the '+' or '-' keys to scroll through the desired diagnostic numbers.
4. Press the 'i' key to display the diagnostic information.
5. If necessary, use the '+' or '-' keys to change the value (display flashes).
6. Save the new value by holding down the 'i' key for approx. 5 seconds until the display no longer flashes.

From manual 839592_05, page 44.

Enter second diagnostic level

1. Scroll through the diagnostic numbers to 'd.97'.
2. Change the displayed value to 17 (password) and press the 'i' button.
3. You are now in the second diagnostic level.

From manual 839592_05, page 45.

Exit diagnostic mode

1. Press the 'i' and '+' keys simultaneously, or do not press any key for approx. 4 minutes.

From manual 839592_05, page 44.

Force maximum rate (Full load mode)

1. Simultaneously press the '+' and '-' buttons on the display system (for ecoTEC combination boilers fully open the hot water tap to maximum water flow rate, or activate full load mode via keys for CO2 check).
2. Wait at least 5 minutes, or until the boiler has reached its operating temperature.

From manual 839592_05, page 34.

CO₂ and CO from manual 839592_05, page 6, 7, 52. Check against the data badge.

The boiler is supplied ready adjusted and no further gas adjustments are necessary, however both the gas inlet working pressures and maximum gas rates should be checked. (page 33)

ecoTEC exclusive (manual 0020017768_05)

Covers: ecoTEC exclusive 832

GC 47-044-37

Enter Service/Diagnostic Mode (1st diagnosis level)

1. Press the i and + buttons simultaneously.
2. The display shows d.0.
3. Scroll to the desired diagnosis number with the + or – buttons.
4. Press the i button to display the value.
5. Change the value using + or – if necessary (display flashes).
6. Save the new value by holding down the i button for approx. 5 seconds until the display no longer blinks.

From manual 0020017768_05, page 29.

Enter 2nd Diagnosis Level

1. Scroll in the 1st diagnosis level to diagnosis number d.97.
2. Change the displayed value to 17 (password) and save this value.
3. You are now in the 2nd diagnosis level.

From manual 0020017768_05, page 42.

Exit Service/Diagnostic Mode

1. Press the i and + buttons simultaneously, or do not press any key for about 4 minutes.

From manual 0020017768_05, page 29.

CO₂ and CO from manual 0020017768_05, page 35. Check against the data badge.

The combustion of this boiler has been checked, adjusted and preset at the factory for operation on the type of gas defined on the identification plate. No measurement of the combustion is necessary to set up the boiler. Do not adjust the multifunctional automatic gas valve. (page 25)

ecoTEC exclusive (manual 0020193968_05)

Covers: ecoTEC exclusive 835 VUW 356/5-7, ecoTEC exclusive 843 VUW 436/5-7

GC 47-044-66, 47-044-67

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press and at the same time.
3. Navigate to Menu -> Installer level and confirm by pressing . (symbol shown in the manual, see the page)
4. Set the value 17 (code) and confirm by pressing . (symbol shown in the manual, see the page)

From manual 0020193968_05, page 25.

Enter service mode / check programmes

1. Navigate to Menu -> Installer level -> Test programs -> Check programs
2. Select the required check programme (e.g., P.01 Maximum load, P.02 Minimum load)
3. Press 1 x the home icon button to start the programme (for P.00 purging) or confirm selection to begin the check programme

From manual 0020193968_05, page 27.

THE AIR GAS RATIO VALVE IS FACTORY SET AND MUST NOT BE ADJUSTED DURING COMMISSIONING UNLESS THIS ACTION IS RECOMMENDED FOLLOWING CONTACT WITH THE MANUFACTURER. (page 67)

ecoTEC plus (manual 0020020828)

Covers: ecoTEC plus 415, ecoTEC plus 418, ecoTEC plus 428, ecoTEC plus 438

GC 41-044-53, 41-044-54, 41-044-55, 41-044-57

Full load mode / Max rate (P.1)

1. Hold the '+' key and turn power on.
2. Press '+' until 'P.1' is displayed for max rate.
3. Press 'i' to operate appliance in this mode.
4. Alternatively, press the '+' and '-' keys simultaneously to activate Full load mode.

From manual 0020020828, page 28.

Min rate (P.2)

1. Enter test programs by holding the '+' key and turning power on.
2. Press '+' until 'P.2' is displayed for min rate.
3. Press 'i' to operate appliance in this mode.

From manual 0020020828, page 28.

CO₂ and CO from manual 0020020828, page 8, 28. Check against the data badge.

The gas valve is factory set for natural gas (G20) and should need no adjustment. (page )

ecoTEC plus (manual 0020209591_01)

Covers: ecoTEC plus 612 H system A VU GB 126/5-5 A, ecoTEC plus 624 H system A VU GB 246/5-5 A, ecoTEC plus 630 H system A VU GB 306/5-5 A, ecoTEC plus 637 H system A VU GB 376/5-5 A, ecoTEC plus 825 H combi A VUW GB 256/5-5, ecoTEC plus 832 H combi A VUW GB 326/5-5, ecoTEC plus 835 H combi A VUW GB 356/5-5, ecoTEC plus 838 H combi A VUW GB 386/5-5

GC 41-044-78, 41-044-82, 41-044-83, 41-044-84, 41-044-85, 47-044-53, 47-044-57, 47-044-58, 47-044-59, 47-044-60

Enter installer level

1. Only call up the installer level if you are a competent person.
2. Navigate to Menu → Installer level and confirm by pressing the confirm (OK) button.
3. Set the value 17 (code) and confirm by pressing the confirm (OK) button.

From manual 0020209591_01, page 20.

Force maximum rate (Check programme P.01)

1. Navigate to Menu -> Installer level -> Test programs -> Check programs -> P.01 Maximum load.
2. After successful ignition, the product is operated at maximum heat input.

From manual 0020209591_01, page 22.

Force minimum rate (Check programme P.02)

1. Navigate to Menu -> Installer level -> Test programs -> Check programs -> P.02 Minimum load.
2. After successful ignition, the product is operated at minimum heat input.

From manual 0020209591_01, page 22.

CO₂ and CO from manual 0020209591_01, page 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 MANUFACTURER. (page 62)

ecoTEC plus (manual 0020244997_07)

Covers: ecoTEC plus 612 VU 126/5-5 R6, ecoTEC plus 615 VU 156/5-5 R6, ecoTEC plus 618 VU 186/5-5 R6, ecoTEC plus 624 VU 246/5-5 R6, ecoTEC Plus 630, ecoTEC plus 637 VU 386/5-5 R6, ecoTEC plus 832 VUW 246/5-5 R6, ecoTEC plus 835 VUW 306/5-5 R6

GC 41-694-20, 41-694-21, 41-694-22, 41-694-23, 41-694-24, 41-694-25, 41-694-26, 41-694-27, 47-044-82, 47-044-84, 47-044-85

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Navigate to Menu -> Installer level and confirm by pressing OK.
3. Set the value 17 (code) and confirm by pressing OK.

From manual 0020244997_07, page 31.

Test programmes and check programmes activation

1. Navigate to Menu -> Installer level -> Test programs
2. As well as the installation assistants, you can also call up the following test programmes for start-up, service and troubleshooting: Check programs, Function menu, Electronics self-test

From manual 0020244997_07, page 32.

CO₂ and CO from manual 0020244997_07, page 37. 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 MANUFACTURER. (page 76)

ecoTEC plus 937

Covers: ecoTEC plus 937

GC 47-044-39

Entering the first diagnostic level

1. Press the i and + buttons simultaneously.
2. The display shows d.00.
3. Use the buttons + or - to move to the desired diagnostic number of the first diagnostic level.
4. Press the i button to show the associated diagnostic information.
5. If necessary you can change the value with the buttons + or - (display flashing).
6. Save the new value by holding down the i button for approx. 5 seconds until the display no longer flashes.

From manual 0020031552_06, page 59.

Entering the second diagnostic level

1. Scroll through to the diagnosis number d.97 in the first diagnostic level.
2. Change the displayed value to 17 (Password) and push the button i.
3. You are now in the second diagnostic level.

From manual 0020031552_06, page 61.

CO₂ and CO from manual 0020031552_06, page 51. Check against the data badge.

The combustion of this boiler has been checked, adjusted and preset at the factory for operation on the type of gas defined on the identification plate. No measurement of the combustion is necessary to set up the boiler. Do not adjust the multifunctional automatic gas valve. (page 42)

ecoTEC plus VU ..6/6-5 OVZ (H-GB)

Covers: ecoTEC plus 412 VU 126/6-5 OVZ, ecoTEC plus 415 VU 156/6-5 OVZ, ecoTEC plus 418 VU 186/6-5 OVZ, ecoTEC plus 424 VU 246/6-5 OVZ, ecoTEC plus 430 VU 306/6-5 OVZ, ecoTEC plus 435 VU 356/6-5 OVZ

GC 41-044-76, 41-694-13, 41-694-14, 41-694-15, 41-694-16, 41-694-17

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Navigate to Menu -> Installer level and confirm by pressing the check button.
3. Set the value 17 (code) and confirm by pressing the check button.

From manual 0020238195_05, page 15.

Using test programmes (Max/Min load)

1. Navigate to Menu -> Installer level -> Test programs -> Check programs.
2. Select P.01 for Maximum load (full load condition) or P.02 for Minimum load.

From manual 0020238195_05, page 27.

CO₂ and CO from manual 0020238195_05, page 19, 23. Check against the data badge.

Never modify the factory setting of the gas pressure regulator of the gas valve assembly. (page )

THE AIR GAS RATIO VALVE IS FACTORY SET AND MUST NOT BE ADJUSTED DURING COMMISSIONING UNLESS THIS ACTION IS RECOMMENDED FOLLOWING CONTACT WITH THE MANUFACTURER. (page )

ecoTEC plus VU VUW

Covers: ecoTEC plus 612 VU GB 126/5-5, ecoTEC plus 615 VU GB 156/5-5, ecoTEC plus 618 VU GB 186/5-5, ecoTEC plus 624 VU GB 246/5-5, ecoTEC plus 630 VU GB 306/5-5, ecoTEC plus 637 VU GB 376/5-5, ecoTEC plus 824 VUW GB 246/5-5, ecoTEC plus 831 VUW GB 316/5-5, ecoTEC plus 837 VUW GB 376/5-5

GC 41-044-60, 41-044-61, 41-044-62, 41-044-63, 41-044-64, 41-044-65, 41-044-66, 41-044-67, 47-044-40, 47-044-41, 47-044-42, 47-044-46

Calling up the installer level

1. Press the left and right selection buttons ("i") simultaneously.
2. Scroll using the minus button or the plus button until the menu point "installer level" appears.
3. Press the right selection button to select the menu point.
4. Select the value 17 (code) using the minus button or the plus button.
5. Press the right selection button to confirm the entered code.

From manual 0020116700_06, page 36.

CO₂ and CO from manual 0020116700_06, page 59. 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 manufacturer. (page 85)

ecoTEC plus VU../VUW..

Covers: ecoTEC plus 610 VU 10CS/1-5, ecoTEC Plus 625, ecoTEC plus 630 VU 30CS/1-5, ecoTEC Plus 635, ecoTEC plus 826 VUW 20/26CS/1-5, ecoTEC plus 832 VUW 25/32CS/1-5, ecoTEC plus 836 VUW 30/36CS/1-5, ecoTEC plus 840 VUW 30/40CS/1-5

GC 41-694-45, 41-694-46, 41-694-47, 41-694-48, 41-694-49, 41-694-50, 47-044-92, 47-044-93, 47-044-94, 47-044-95

Entering the Installer Level

1. Navigate to MENU -> SETTINGS -> Installer level and confirm by pressing OK.
2. Set the code for the installer level (Code: 17) and confirm by pressing OK.

From manual 0020308118_05, page 38.

Running Chimney Sweep Mode (Combustion Analysis)

1. Press the menu button (☰).
2. Press the chimney sweep button (⏱) or navigate to MENU → SETTINGS → Chimney sweep mode.
3. To carry out the combustion analysis, select one of the following heat loads: Adjustable heat load, Max. DHW heat input, or Min. heat input.
4. Confirm by pressing the checkmark button (✓).

From manual 0020308118_05, page 39.

Running Check Programmes

1. Call up the installer level.
2. Navigate to the Test modes -> Check programmes menu item.
3. Use the scrollbar to select the required check programme.
4. Confirm by pressing the tick (✓) button.
5. The check programme starts and runs through checks.
6. If you have selected check programme P.001, set the desired load and then confirm by pressing the tick (✓) button.
7. While the check programme is running, press the ? button, if required, to display the Data overview.
8. If required, select another check programme.

From manual 0020308118_05, page 38.

THE AIR GAS RATIO VALVE IS FACTORY SET AND MUST NOT BE ADJUSTED DURING COMMISSIONING UNLESS THIS ACTION IS RECOMMENDED FOLLOWING CONTACT WITH THE MANUFACTURER. (page 108)

ecoTEC plus VUI (manual 0020134833_01)

Covers: ecoTEC plus 937 VUI GB 376/5-5

GC 47-044-43

Calling up the installer level

1. Press the left and right selection buttons ("i") simultaneously.
2. Scroll using the minus button or the plus button until the menu point "Installer level" appears.
3. Press the right-hand selection button to select the menu point.
4. Select the value 17 (code) using the minus button or the plus button.
5. Press the right-hand selection button to confirm the entered code.

From manual 0020134833_01, page 37.

CO₂ and CO from manual 0020134833_01, page 61. Check against the data badge.

Modifications to the gas pressure regulator of the gas valve may destroy the gas valve and cause operating faults on the boiler. Never modify the factory setting of the gas pressure regulator of the gas valve. (page 45)

ecoTEC plus VUI (manual 0020209593_01)

Covers: ecoTEC plus 938 VUI GB 386/5-5 A

GC 47-044-61

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Navigate to Menu → Installer level and confirm by pressing. (symbol shown in the manual, see the page)
3. Set the value 17 (code) and confirm by pressing. (symbol shown in the manual, see the page)

From manual 0020209593_01, page 20.

Check programmes / Test programmes

1. P.00: Purging check programme (internal pump cyclically actuated)
2. P.01: Maximum load check programme (product operated at maximum heat input)
3. P.02: Minimum load check programme (product operated at minimum heat input)
4. P.06: Filling mode check programme (diverter valve mid-position, burner and pump off)

From manual 0020209593_01, page 22.

CO₂ and CO from manual 0020209593_01, page 27. 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 MANUFACTURER. (page 58)

ecoTEC pro (manual 0020129672_05)

Covers: ecoTEC pro 28 VUW GB 286/5-3

GC 47-044-45, 47-044-47

Calling up the installer level

1. Press the left and right selection buttons ("i") at the same time.
2. The Live monitor is shown in the display.
3. Press the right selection button to select the menu point.
4. "Code" and the value "00" appear in the display.
5. Select the value 17 (code) using the minus button or the plus button.
6. Press the right selection button to confirm the entered code.

From manual 0020129672_05, page 30.

CO₂ and CO from manual 0020129672_05, page 48. Check against the data badge.

The combustion of this boiler has been checked, adjusted and preset at the factory for operation on the gas group defined on the identification plate. No measurement of the combustion is necessary to set up the boiler. Do not adjust the gas valve. (page )

ecoTEC pro (manual 0020209589_01)

Covers: ecoTEC pro 24 H combi A VUW 246/5-3 A, ecoTEC pro 28 H combi A VUW GB 286/5-3 A

GC 47-044-54, 47-044-55, 47-044-56

Entering installer level and check programmes

1. Only call up the installer level if you are a competent person.
2. Press left-arrow and (i) info at the same time. < S.xx appears in the display (current unit status).
3. Press right-arrow to access the installer level. < Code and -- appear in the display.
4. Set the value 17 (code) and confirm by pressing right-arrow.
5. Press right-arrow to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use + or - to set the required value and confirm by pressing right-arrow.
7. Confirm by pressing tick.
8. Press left-arrow to cancel a setting or exit the installer level.

From manual 0020209589_01, page 17.

Force max & min rate (Check programmes)

1. Access check programmes via installer level + 1x .
2. Select P.01 for maximum load check programme (Maximum heat input after successful ignition).
3. Select P.02 for minimum load check programme (Minimum heat input after successful ignition).
4. Select P.06 for filling mode check programme.

From manual 0020209589_01, page 18.

CO₂ and CO from manual 0020209589_01, page 22. 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 MANUFACTURER. (page 43)

ecoTEC pro (manual 0020209589_05)

Covers: ecoTEC Pro / ecoTEC Plus Combi, ecoTEC pro 30 H combi A VUW GB 306/5-3

GC 47-044-52

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press the i button and the right arrow button at the same time. ◁ S.xx appears in the display (current unit status).
3. Press the wrench button to access the installer level. ◁ Code and -- appear in the display.
4. Set the value 17 (code) and confirm by pressing the tick button (✔).
5. Press the wrench button to access the check programmes (P) and the fault codes (F) and to return to the diagnostics codes (D).
6. Use + or - to set the required value and confirm by pressing the tick button (✔).
7. Confirm by pressing the tick button (✔).
8. Press the back button (↩) to cancel a setting or exit the installer level.

From manual 0020209589_05, page 24.

Using check programmes (e.g. P.01 Maximum load, P.02 Minimum load, P.06 Filling mode)

1. Call up the installer level + 1x.
2. Access check programmes (P).
3. Select the required check programme using or and confirm.

From manual 0020209589_05, page 26.

CO₂ and CO from manual 0020209589_05, page 28. 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 MANUFACTURER. (page 52)

ecoTEC pro (manual 0020244995_05)

Covers: ecoTEC pro 24 VUW 246/5-3 R6, ecoTEC pro 28 VUW 286/5-3 R6

GC 47-044-88, 47-044-89

Forcing Maximum Rate (Check Programme P.01)

1. Access check programmes in the installer level.
2. Select programme P.01 to operate the product at maximum heat input after successful ignition.

From manual 0020244995_05, page 48.

Forcing Minimum Rate (Check Programme P.02)

1. Access check programmes in the installer level.
2. Select programme P.02 to operate the product at minimum heat input after successful ignition.

From manual 0020244995_05, page 48.

CO₂ and CO from manual 0020244995_05, page 30. Check against the data badge.

Risk of material damage caused by making unauthorised settings. Never modify the factory setting of the gas pressure regulator of the gas valve. (page 29)

ecoTEC sustain

Covers: ecoTEC sustain 28 VUW 286/7-2, ecoTEC sustain 34 VUW 346/7-2

GC 47-044-80, 47-044-81

Calling up the installer level

1. Only call up the installer level if you are a competent person.
2. Press ▬ and (i) at the same time.
3. Press ▬ to access the installer level.
4. Press ▬.
5. Press the – or + button to change the installer code.
6. Confirm by pressing ▬.
7. Press ▬ to access the diagnostics codes (d.), the check programmes (P.) and the fault codes (F.) and to return to the diagnostics codes (d.).
8. Use + or – to set the required value .
9. Confirm by pressing ▬.
10. Use + or – to set the required value .

From manual 0020253094_06, page 27.

Calling up check programmes (e.g. P.01 for max rate)

1. Call up the installer level. (→ Page 27) – d.-- is shown in the display.
2. Press ▬. – P.-- is shown in the display.
3. Press the – or + button to select the check programme.
4. Press ▬ to confirm. – The check programme starts.
5. Press ▬. – The heating water temperature and the filling pressure for the heating installation are shown alternately in the display.

From manual 0020253094_06, page 27.

CO₂ and CO from manual 0020253094_06, page 32. 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 manufacturer. (page 59)

HOME COMBI

Covers: Home Combi 35

GC 47-044-64

Activating diagnostics codes (Service Mode)

1. Press and hold the mode button for 7 seconds.
2. Press the - or + button to set the value.
3. Press the mode button to confirm.

From manual 0020224355_01, page 14.

Using check programmes (Force Max/Min rate)

1. Hold the standby/on/off button down for more than 5 seconds.
2. Press and hold the mode button for five seconds.
3. Press the minus or plus button to select the check programme.
4. Press the mode button to confirm.
5. Press the minus and plus buttons at the same time whilst running a check programme.
6. Press the mode button to return to the check programme.
7. Press the mode button to finish the check programme.
8. Press and hold the mode button for 3 seconds to finish the check programmes.

From manual 0020224355_01, page 15.

CO₂ and CO from manual 0020224355_01, page 22. 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 MANUFACTURER. (page )

HOME REGULAR

Covers: Home Regular 12

GC 41-044-88

Activating diagnostics codes

1. Press and hold the button for seven seconds. (symbol shown in the manual, see the page)
2. Press the buttons to set the value. The access code (96) is reserved for the competent person.
3. Press the button to confirm. (symbol shown in the manual, see the page)

From manual 0020224338_00, page 15.

Activating check programmes

1. Press and hold the button for more than five seconds. (symbol shown in the manual, see the page)
2. Press and hold the button for five seconds. (symbol shown in the manual, see the page)
3. Press the button to select the check programme. (symbol shown in the manual, see the page)
4. Press the button to confirm. (symbol shown in the manual, see the page)
5. Press the button to finish the check programme. (symbol shown in the manual, see the page)
6. Press and hold the button for three seconds to finish the check programmes. (symbol shown in the manual, see the page)

From manual 0020224338_00, page 15.

Activating the check programme for the maximum output function

1. Press and hold the power button for more than five seconds.
2. Press and hold the mode button for five seconds.
3. Press the minus/plus button to select the check programme.
4. Press the mode button to confirm.
5. Press the mode button to finish the check programme.
6. Press and hold the mode button for three seconds to finish the check programmes.

From manual 0020224338_00, page 15.

CO₂ and CO from manual 0020224338_00, page 18. 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 MANUFACTURER. (page 38)

turboMAX plus and thermoCOMPACT (manual 83 37 86_30)

Covers: Turbomax Plus 828, Turbomax Plus 828 E

Enter service / test mode

1. Turn off the boiler at the main ON/OFF control.
2. Press and hold the "+" button, while pressing the button turn the main ON/OFF control to the "I" ON position.
3. Continue holding "+" button until display alternates between "P1" and "P2". Release "+" button.
4. Press "+" button until "P1" is shown in the display. "P1" indicates the maximum gas rate and "P2" indicates the ignition rate.
5. Press "i" button to operate boiler at maximum gas rate.

From manual 83 37 86_30, page 26.

The burner pressure on this appliance has been factory set and does not require adjustment. All measurements and adjustments to the gas valve must be done with the combustion chamber cover removed. (page 27)

turboMAX plus and thermoCOMPACT (manual 833786_GB43_112005)

Covers: Turbomax 824/828

Force Max/Min Burner Rate

1. Turn off boiler at main ON/OFF control.
2. Hold '+' button and turn ON/OFF control to '1'.
3. Release '+' button when display alternates P1/P2.
4. Press '+' to select P1 (max rate) or P2 (ignition rate).
5. Press 'i' to activate.

From manual 833786_GB43_112005, page 26.

Exit Service Mode

1. Press 'i' and '+' buttons simultaneously.

From manual 833786_GB43_112005, page 27.

The burner pressure on this appliance has been factory set and does not require adjustment. All measurements and adjustments to the gas valve must be done with the combustion chamber cover removed. (page 27)

Vaillant ECOmax 828 E

Covers: ecoMAX 824E, ecoMAX 828E

GC 47-044-07, 47-044-08, 47-044-12

Entering Diagnostic Mode

1. Simultaneously press and release the (+) and (-) buttons.
2. The diagnostic mode is entered and 'd00' is shown on the diagnostic display.
3. Use the (+) and (-) buttons to select the required diagnostic code.
4. Press the diagnostic button to execute the check and display relevant information.
5. Press the diagnostic button again to return from a diagnostic enquiry.
6. To exit back to normal mode, press and release both '+' and '-' buttons simultaneously.

From manual 833502 GB01, page 58.

The gas rate has been set during production and does not require adjustment. (page 31)