High
FC on Viessmann Vitodens 050-W BPJD

Your boiler has detected an internal electrical communication error between its main brain and the fan that exhausts combustion gases, causing it to stop operating for safety.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Burner blocked, Electrical fan control (control unit) faulty

From this model's manual
Verified against the Viessmann Vitodens 050 W Bpjd installation & service manual, page 53.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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