Viessmann F4: No flame signal
Safety related: do not keep resettingWhat it means
Ignition attempt failed.
Safe things to try first
- Check gas and condensate pipe. Reset once.
When to call an engineer
Gas valve and electrode check by a Gas Safe engineer.
Never remove the boiler cover or work on gas components yourself. It is illegal unless you are Gas Safe registered, and it will void your warranty.
Fix Viessmann F4 today
Boiler repair from £75. 92% of repairs fixed on the first visit with parts from the van.