BoilerFaultCodes.com
F.61 High Lockout

Your boiler is unable to send gas to the burner because of a communication failure between the main control board and the gas valve.

Call an engineer soon

Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Fault: Fuel valve actuation - The gas valve assembly cannot be actuated

What causes this fault?

This fault occurs when the boiler's main internal computer cannot properly communicate with the gas valve that lets fuel into the burner. The most common reason is an electronic failure within the gas valve itself or a fault on the printed circuit board that prevents it from sending the correct starting signal. In some cases, it can be caused by dampness or loose connections in the wiring that links these two vital components.

Typical repair cost £180-£450 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Protect yourself from future repair bills

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