Viessmann Vitodens 100 Gas Valve Ref. 7861580
RefurbishedViessmannGas valves

Viessmann Vitodens 100 Gas Valve Ref. 7861580

75 €VAT includedIn stock · 1 unit

Gas valve: reconditioned spare part that regulates and modulates the gas flow to the burner. Useful if there are ignition faults or the flame does not modulate. Compatible with Vitodens 100-W B1HC, Vitodens 100-W B1KC (ref. 7861580). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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

Key Data

Reference
7861580
Brand
Viessmann
Type of part
Gas valves
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 7861580) equips these models. Verified compatibility; check the reference before purchasing.

Vitodens 100-W

  • Vitodens 100-W B1HC
  • Vitodens 100-W B1KC

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)
F8Burner fault: the (combined) gas valve closes too late.A faulty gas valve delays its closure during the safety test, and the control detects it and locks out. Check in service mode/minimum power by observing the closure delay, measuring the signal to the valve, and performing a tightness/closure test.
F4Burner fault: no flame signal (ionization not detected).If the gas valve does not open or delivers insufficient flow, the flame is not established and F4 appears. Check by measuring voltage at the valve coils during ignition and the gas pressure/flow; confirm opening from the service menu/function.
How do I know if this gas valve is the one for my boiler?
Verify the reference 7861580 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The gas valve regulates and modulates the gas flow to the burner.
Ignition faults, does not modulate, or smells of gas?
It could be the gas valve. IMPORTANT: gas handling ONLY by an authorised technician.
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
Installation and pressure adjustment by authorised technician; mandatory leak check.
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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