Vaillant F62: Gas valve shut-off delay
Safety related: do not keep resettingWhat it means
The flame stayed on after the gas valve should have closed.
Safe things to try first
- Turn the boiler off and do not reset repeatedly.
When to call an engineer
Safety-related: a Gas Safe engineer must inspect the gas valve.
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.
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