Viessmann Vitopend 100 WH0A Control PCB Ref. 7827494
RefurbishedViessmannPCBs (control boards)

Viessmann Vitopend 100 WH0A Control PCB Ref. 7827494

80 €VAT includedIn stock · 4 units

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks up, or the display is unresponsive. Compatible with Vitopend 100 WH0, Vitopend 100 WH0A (ref. 7827494). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
7827494
Brand
Viessmann
Type of part
PCBs (control boards)
Available units
4 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 7827494) equips these models. Verified compatibility; check the reference before purchasing.

Viessmann Vitopend 100

  • Vitopend 100 WH0
  • Vitopend 100 WH0A

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
UFEFault in the Brennersteuergerät (burner control unit/PCB).Internal fault or defective parameterization of the control board (LGM27, ref. 7827494); check power supply, connectors/wiring, and board coding; if the fault persists, replace the board.
UF9Fault in the Brennersteuergerät (burner control unit/PCB).The control board (LGM27, ref. 7827494) detects an internal fault condition; after checking electrodes/ionisation and gas, if it reappears, check connections and replace the PCB.
UFdFault in the Brennersteuergerät (burner control unit/PCB).Recurrent internal error of the control module (LGM27, ref. 7827494); check wiring/coding and, if not restored, replace the PCB.
U02Fault in the Brennersteuergerät (burner control unit/PCB).Anomalous defect/parameterization in the control board (LGM27, ref. 7827494); check power supply and connectors, and if it reappears, replace the board.
U11Fault in the Brennersteuergerät (burner control unit/PCB).Internal fault of the electronic module (LGM27, ref. 7827494); check connections/coding and replace the PCB if the equipment does not reset.
U0CFault in the Brennersteuergerät (burner control unit/PCB).Internal error/ADC or incorrect configuration on the PCB (LGM27, ref. 7827494); check power supply, connectors X13/VR20 and, if it persists, replace the PCB.
U0dFault in the Brennersteuergerät (burner control unit/PCB).The control board (LGM27, ref. 7827494) remains in fault/locked state; after checking external causes and performing a reset, replace the board if the fault reappears.
How do I know if this PCB is for my boiler?
Verify the reference 7827494 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Viessmann part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.
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