Home/Boiler Fault Codes/Vaillant F62
VAILLANT FAULT CODE
Vaillant F62
Points to a delay in the gas valve shutting off correctly, which can indicate a leaking valve or a fault in the boiler's electronics.
WHAT F62 TYPICALLY INDICATES
Points to a delay in the gas valve shutting off correctly, which can indicate a leaking valve or a fault in the boiler's electronics.
WHAT TO DO
A gas valve fault is always engineer-only work. This is not a DIY fix — it requires a Gas Safe registered engineer to diagnose and repair safely.
A NOTE ON GAS SAFE REGISTRATION
Any work on the gas side of a boiler in the UK legally requires a Gas Safe registered engineer, it isn't optional. Our engineers are fully Gas Safe registered, and you're always welcome to ask to see ID on the day. This page is general information about what a fault code typically indicates; it is not a substitute for an engineer diagnosing your specific boiler.
Seeing Vaillant F62 on your boiler?
Tell us the code and your postcode. A fully Gas Safe registered engineer will diagnose the actual cause before quoting a fix.
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