Viessmann Vitodens 200 WB2A Control Board PCB Ref. 7825241
RefurbishedViessmannPCBs (control boards)

Viessmann Vitodens 200 WB2A Control Board PCB Ref. 7825241

225 €VAT includedIn stock · 1 unit

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 out, or the display is unresponsive. Compatible with Vitodens 200-W WB2A 26 kW, Vitodens 300-W WB3A 26 kW, Vitodens 300-W WB3A 35 kW (ref. 7825241). 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
7825241
Brand
Viessmann
Type of part
PCBs (control boards)
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 7825241) equips these models. Verified compatibility; check the reference before purchasing.

Vitodens 200-W (WB2A)

  • Vitodens 200-W WB2A 26 kW

Vitodens 300-W (WB3A)

  • Vitodens 300-W WB3A 26 kW
  • Vitodens 300-W WB3A 35 kW
  • Vitodens 300-W WB3A 49 kW
  • Vitodens 300-W WB3A 66 kW

Vitodens 300-W (WB3B)

  • Vitodens 300-W WB3B 35 kW

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)
F0Internal fault; burner locked.Internal fault of the boiler control unit (PCB). Check 230/24 V, wiring, and sensors; if everything is correct and the code persists, the PCB is faulty and must be replaced.
E4Burner blocked; fault in the 24 V power supply.Fault in the 24 V supply/monitoring circuit on the control board. Measure the 24 VDC output and peripherals; if the voltage is correct and the alarm persists, the PCB is defective and must be replaced.
b5Control mode according to delivery; internal fault.Internal fault in the regulation electronics (PCB). Confirm that there are no programming/Vitotrol errors and reset; if it reappears, replace the control board.
b4Regulates as if the outside temperature were 0 °C; internal fault.A/D converter fault or measurement on the control board causing incorrect external reading. Check the external sensor and resistances at terminals; if they are correct and the fault code persists, the PCB is damaged and must be replaced.
How do I know if this PCB is for my boiler?
Verify the reference 7825241 printed and ensure your model is on the list of compatibles; 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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