Viessmann boiler service mode

contractors Vitodens 242-F Type B2UA

Covers: Vitodens 242-F B2UA

GC 41-819-18, 41-819-19

Entering Service Menu

1. Press OK and 'menu' (three lines symbol) simultaneously for approx. 4 s.

From manual 5773 238 GB, page 119.

Exiting Service Menu

1. Select 'Terminate service?'
2. Select 'Yes'
3. Confirm with OK

From manual 5773 238 GB, page 119.

The boiler is equipped with an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. For natural gas, no adjustment is required. For LPG, the gas train adjusting screw must be set to '2' and coding address 82 set to 1. (page 52)

Vitodens 025-W

Covers: Vitodens 025-W, BPKB-24, Vitodens 025-W, BPKB-28

GC 47-819-64, 47-819-65

Calling up the service menu

1. Press and simultaneously for approx. 4 s.
2. Select the required menu section (for example 'S', 'C' or 'd').
3. Press OK.

From manual 6227767, page 55.

Exiting the service menu

1. Press ' ' for 3 s.

From manual 6227767, page 55.

Force max & min rate (Emissions test mode S.1)

1. Access service menu and select 'S', then 'S1'.
2. Confirm 'LO' with OK: Boiler operates at minimum output.
3. Confirm 'HI' with OK: Boiler operates at maximum output.
4. Confirm 'OFF' with OK while 'LO' or 'HI' mode is active: The boiler cancels the heat demand.

From manual 6227767, page 56.

The boiler is equipped with a pneumatic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality (page )

Vitodens 050-W

Covers: Vitodens 050-W Bpjc 29kW Combi Boiler, Vitodens 050-W Bpjc 35kW Combi Boiler, Vitodens 050-W BPJD 29kW Combi Boiler, Vitodens 050-W BPJD 35kW Combi Boiler

GC 47-819-31, 47-819-32, 47-819-38, 47-819-39

Enter Service Mode (Filling Function / General Service)

1. Press MODE and simultaneously and hold for approx. 3 s.
2. "SERV" is displayed and "1" flashes.
3. Press OK to confirm.
4. "0" flashes on the display.
5. Use / to set "I" (for filling function) or select the required service menu number.
6. Press OK to confirm.

From manual 5675991, page 27.

Exit Service Mode

1. Press MODE and simultaneously and hold for 3 s. Service mode is terminated. Service mode also terminates automatically after 30 min.

From manual 5675991, page 31.

Force Burner Output / Manual Rate (CO2 Testing)

1. Press MODE.
2. Press / repeatedly until "SERV" is displayed.
3. Press OK to confirm. "OFF" appears on the display.
4. Use / to adjust the burner output: _ = 20%, __ = 40%, ___ = 60%, ____ = 80%, _ _ _ _ _ 00 = 100%.
5. Confirm your setting with OK.
6. Alternatively use / to set the burner output to "OFF" after checking, or the function terminates automatically after 30 min.

From manual 5675991, page 39.

CO₂ and CO from manual 5675991, page 37, 39. Check against the data badge.

Preset for operation with natural gas. Conversion to LPG P requires a gas conversion kit. (page )

Vitodens 100-W Type B1GA, 3.2 to 32 kW Wall mounted gas condensing boiler

Covers: Vitodens 100-W Heat Only B1GA-32

GC 41-819-56

Entering service / parameter setting mode

1. Tap and OK simultaneously for approx. 4 s, then release.
2. Use / to select the required menu section or parameter (e.g. b.2 for system configuration, b.6 for upper/lower heating output for test mode).
3. Press OK to confirm.

From manual 6194585, page 46.

Forcing upper / lower heating output for test mode

1. Tap and OK simultaneously for approx. 4 s, then release.
2. Use / to select 'b.6' for the upper/lower heating output.
3. Press OK.
4. Use / to set the value: 'OF' - off, '1' - Min. heating output, '2' - Max. heating output.
5. Press OK to confirm.

From manual 6194585, page 45.

No mechanical adjustments are made to the gas solenoid valve. (page 34)

Vitodens 100-W Type B1HA, B1KA contractors

Covers: Vitodens 100-W B1HA-19, Vitodens 100-W B1HA-26, Vitodens 100-W B1HA-30, Vitodens 100-W B1HA-35, Vitodens 100-W B1KA-26, Vitodens 100-W B1KA-30, Vitodens 100-W B1KA-35

GC 41-819-36, 41-819-37, 41-819-38, 41-819-39, 47-819-33, 47-819-34, 47-819-35

Enter filling function / Service mode

1. Turn rotary selector 'rt' anticlockwise for less than 2 s and then clockwise back into the r.h. section of the control range.
2. 'SERV', 'r' and 'w' will appear on the display.

From manual 5677 216 GB, page 30.

Force maximum and minimum heating output

1. Switch ON the ON/OFF switch.
2. Turn rotary selector 'tr' for less than 2 s fully clockwise and then back into the r.h. section of the control range ('SERV' and 'A' appear).
3. Select required maximum heating output with rotary selector 'tr' (Position 1 = lower heating output, Position 6 = upper heating output).
4. For CO2 checks: set upper heating output by turning 'tr' into r.h. section until display shows 5 bars; set lower heating output by turning 'tr' into l.h. section until display shows 1 bar.

From manual 5677 216 GB, page 35.

CO₂ and CO from manual 5677 216 GB, page 51. Check against the data badge.

The Vitodens 100-W is factory-set for natural gas. Due to factory settings, the gas pressure must not be altered from these values. (page 50)

Vitodens 100-W Type B1HC, B1KC

Covers: Vitodens 100-W B1HC-19, Vitodens 100-W B1HC-26, Vitodens 100-W B1HC-30, Vitodens 100-W B1HC-35, Vitodens 100-W B1KC-26, Vitodens 100-W B1KC-30, Vitodens 100-W B1KC-35

GC 41-819-40, 41-819-41, 41-819-42, 41-819-43, 47-819-40, 47-819-41, 47-819-42

Enter test mode / service mode

1. Tap MODE.
2. Press / repeatedly until SERV appears.
3. OK to confirm. OFF appears on the display. Test mode is not active.

From manual 5697787, page 38.

Force max & min rate (adjust burner output in test mode)

1. Use / to adjust the burner output: OFF = 0%, 20 = 20%, 40 = 40%, 60 = 60%, 80 = 80%, 100 = 100%.
2. Confirm your setting with OK. The bars stop flashing.

From manual 5697787, page 38.

Terminate test mode

1. Press / repeatedly until SERV flashes.
2. OK to confirm. The selected value flashes.
3. Press repeatedly until OFF flashes.
4. OK to confirm. When SERV disappears, test mode is terminated.

From manual 5697787, page 38.

Due to factory settings, the gas pressure must not be altered from these values. (page )

Vitodens 100-W Type WB1B (manual 5366 836 GB)

Covers: Vitodens 100 Compact WB1A 8-18kW, Vitodens 100 W WB1B 30kW Combi Boiler, Vitodens 100 W WB1B 30kW System Boiler, Vitodens 100 W WB1B 35kW Combi Boiler, Vitodens 100 W WB1B 35kW System Boiler

GC 41-819-12, 41-819-13, 41-819-14, 47-819-19, 47-819-20

Entering Service Mode for Circulation Pump Adjustment / Testing

1. Simultaneously turn rotary selectors 'tw' and 'tr' to their central position.
2. 'SERV' appears on the display.
3. Within 2 s turn rotary selector 'rt' to the top right area ('r' and set value flash) OR turn rotary selector 'tr' clockwise for less than 2 s and then anticlockwise back to the control range on the right for CO2 testing.

From manual 5366 836 GB, page 21.

Force Max & Min Rate (Output Adjustment during Service mode)

1. To adjust upper output: Turn rotary selector 'tr' to the control range on the right (display shows 5 bars for upper output).
2. To adjust lower output: Turn rotary selector 'tr' to the left control range (display shows 1 bar for lower output).

From manual 5366 836 GB, page 23.

Because of factory settings, the gas pressure must not be altered from these settings. (page 61)

Vitodens 100-W Type WB1B (manual 5368 662 GB)

Covers: Vitodens 100 W WB1B 13kW Regular Boiler open vent, Vitodens 100 W WB1B 16kW Regular Boiler open vent, Vitodens 100 W WB1B 19kW Regular Boiler open vent, Vitodens 100 W WB1B 26kW Regular Boiler open vent

GC 41-819-21, 41-819-22, 41-819-23, 41-819-24

Enter Service Mode (Checking CO2)

1. Start the boiler.
2. Turn rotary selector tr clockwise for less than 2 s and then anticlockwise back to the control range on the right.
3. The display shows SERV and the boiler water temperature is shown.

From manual 5368 662 GB, page 18.

Force Upper and Lower Output

1. Adjust upper output: Turn rotary selector tr to the control range on the right. The display shows 5 bars for upper output.
2. Adjust lower output: Turn rotary selector tr to the left control range. The display shows 1 bar for lower output.

From manual 5368 662 GB, page 19.

Enter Service Mode for Gas Type Conversion

1. Turn ON/OFF switch ON.
2. Simultaneously turn rotary selectors à and tr to their central position. SERV appears on the display.
3. Turn rotary selector tr anticlockwise as far as it will go within 2 s. A appears on the display and the set value flashes.
4. Adjust the control unit to natural gas or LPG by turning the left rotary selector à (0 for natural gas, 1 for LPG).
5. Do not adjust the rotary selectors for 15 s to save the set operating mode.
6. Switch ON/OFF switch off and on again.

From manual 5368 662 GB, page 37.

Because of factory settings, the gas pressure must not be altered from these settings. (page )

Vitodens 111-W

Covers: Vitodens 111-W B1LF 19kW, Vitodens 111-W B1LF 25kW, Vitodens 111-W B1LF 32kW

Entering Service Mode / Commissioning Assistant

1. Press and hold ' ' and OK simultaneously for approx. 4 s, then release.
2. Use / to select 'b.5' for the commissioning assistant and confirm with 'OK'.
3. Alternatively, to enter parameter settings, use / to select 'b.2' for system configuration and confirm with 'OK'.

From manual 6167585, page 30.

Forcing Max & Min Rate (Upper/Lower Heating Output)

1. Press and hold ' ' and OK simultaneously for approx. 4 s, then release.
2. Use / to select 'b.6' for the upper/lower heating output.
3. Confirm with OK.
4. Use / to set the value: '0' - OFF, '1' - Min. heating output, '2' - Max. heating output.
5. Confirm with OK.

From manual 6167585, page 53.

No mechanical adjustments are made to the gas solenoid valve. The electronic combustion controller automatically adjusts the burner for optimum combustion. (page 37)

Vitodens 111-W Type B1LB

Covers: Vitodens 111-W B1LB 26kW, Vitodens 111-W B1LB 35kW

GC 47-819-36, 47-819-37

Entering service mode (filling function / general service mode)

1. Turn rotary selector 'rt' fully anti-clockwise, until the display shows 'SERV'.
2. Within 2 s return the rotary selector to the r.h. control range.
3. The display shows 'r' and 'w' (or 'SERV').

From manual 5677 219 GB, page 27.

Forcing max and min rate (upper and lower heating output adjustment)

1. Turn rotary selector 'tr' fully clockwise, until the display shows 'SERV'.
2. Within 2 s return the rotary selector to the r.h. control range. The display shows 'A'.
3. To adjust upper heating output: Turn rotary selector 'tr' fully clockwise until the display shows 5 bars for the upper heating output.
4. To adjust lower heating output: Turn rotary selector 'tr' fully anti-clockwise until the display shows 1 bar for the lower heating output.

From manual 5677 219 GB, page 40.

Due to factory settings, the gas pressure must not be altered from these values. (page 92)

Vitodens 200-W B2HF System

Covers: Vitodens 200-W B2HF System

Entering Service Mode

1. Tap the menu button on the touchscreen.
2. Select 'Service'.
3. Enter password 'viservice'.
4. Use checkmark button to confirm.

From manual 5593201, page 41.

Forcing Max and Min Rate (Actuator Test)

1. Navigate to the Service menu using password 'viservice'.
2. Select 'Actuator test' and confirm the security prompt.
3. Select 'Burner modulation, set value'.
4. Select 'Minimum heating output' or 'Maximum heating output' as required.

From manual 5593201, page 61.

Vitodens 242-F

Covers: Vitodens 242-F FB2B

Entering Service Functions / Service Menu

1. Press OK and å simultaneously for approx. 4 s.
2. Select required service function from the service menu.

From manual 5412 755 GB, page 98.

Force Max & Min Rate (Upper / Lower Output)

1. Press OK and å simultaneously for approx. 4 s.
2. Select 'Actuator test'.
3. To select lower output: Select 'Base load' 'ON' and confirm with OK.
4. To select upper output: Select 'Full load' 'ON' and confirm with OK.

From manual 5412 755 GB, page 51.

CO₂ and CO from manual 5412 755 GB, page 50. Check against the data badge.

Vitodens 333

Covers: Vitodens 333-F

GC 47-810-07

Enter Emissions Test Mode (S)

1. Press F and E simultaneously for approx. 2 seconds.

From manual 5692 548 GB, page 78.

Forcing Max/Min Output (CO2 Test)

1. Constant temp unit: Press 9 and d simultaneously until '1' appears (lower load) or select '2' (upper load).
2. Weather-compensated unit: Press 9 and d simultaneously until 'Relay test' appears. Select 'Basic load' or 'Full load' via a/b.

From manual 5692 548 GB, page 32.

CO₂ and CO from manual 5692 548 GB, page 31. Check against the data badge.

The MatriX burner for Vitodens 333 is preset for the entire gas group. Therefore, the burner requires no further setting or adjustment. (page 15)