BoilerFaultCodesYour boiler has detected a potential safety issue where the gas valve is not closing properly or the control board is misreading the gas flow.
Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now — this fault can be dangerous if ignored.
Technical description: Gas valve shutoff delay | Gas valve leaking, electronics defective
What causes this fault?
This fault occurs when the boiler's control board detects that gas is still present even after it has commanded the gas valve to close. The most common cause is a physical internal leak in the gas valve itself or a communication error on the main circuit board that prevents it from shutting off the fuel supply correctly.
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.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like F.62 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
Affiliate links — we may earn a commission at no extra cost to you.