Viessmann Vitodens 100 W B1HC Control PCB Ref. 7870767
RefurbishedViessmannPCBs (control boards)

Viessmann Vitodens 100 W B1HC Control PCB Ref. 7870767

120 €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 B1HC 19kW, B1HC 26kW, B1HC 35kW (ref. 7870767). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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

Key Data

Reference
7870767
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. 7870767) equips these models. Verified compatibility; check the reference before purchasing.

Vitodens 100-W

  • B1HC 19kW
  • B1HC 26kW
  • B1HC 35kW
  • B1KC 26kW
  • B1KC 35kW

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)
FdBurner blocked due to error in the control board (burner control/electronics).The regulation electronics itself detects an internal fault in the burner control unit and locks the equipment; after ruling out ignition electrodes, interconnection wiring, and electromagnetic interference (EMI) and pressing Reset, if it persists, the official documentation indicates 'replace the regulation', meaning this PCB. Verify by resetting and, if the Fd lock reappears without an external cause, the PCB is the part to replace.
FFBurner blocked due to error in the control board (burner control/electronics).Same origin as Fd: internal fault of the burner control unit that locks the boiler; after checking electrodes, wiring, and absence of interference (EMC) and resetting, the indication is 'if not resolved, replace the regulation', which points to this PCB. Verify with Reset; if FF persistently returns without external cause, replace the PCB.
How do I know if this PCB is for my boiler?
Verify the reference 7870767 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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