BoilerFaultCodesYour boiler has detected an internal electronics failure that prevents it from safely controlling the gas supply, meaning it has shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Main PCB gas valve shutdown fault
What causes this fault?
This fault occurs when the boiler's main control board detects a safety timing issue or an electrical failure when trying to shut off the gas valve. It is typically caused by a malfunctioning circuit board that can no longer communicate correctly with the valve, or a valve that is physically sticking and failing to close when prompted.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like F62 — no call-out fees, no surprises.
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