What does the Viessmann FC fault code mean?

Your boiler has detected a serious problem related to the fuel supply or exhaust system, causing it to shut down for your safety.

How much does it cost to fix Viessmann error code FC?

Typical repair cost for the Viessmann FC fault is £250-500 including labour.

Manufacturer manual

Burner in a fault state, Gas train faulty or faulty modulation valve control; or flue gas path blocked

Shared across the Vitodens 222F FS2B range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

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

Boiler cover options

A cover plan would handle faults like FC: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.