High Lockout
E38 on Keston C36

Your boiler's control panel has developed a mechanical or electrical fault with the reset button, meaning it cannot process your commands correctly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

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

Technical description

Reset key fault – replace fascia PCB

What causes this fault?

This fault occurs when the reset button on the boiler's control panel becomes physically stuck or experiences an electrical short circuit. It is often caused by the delicate internal switch on the circuit board wearing out or failing after repeated use, leading the boiler to believe the button is being held down permanently.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

E37View →E40View →

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