BoilerFaultCodesKeston E38 Fault Code
The Keston E38 fault code means: your boiler's control panel has developed a mechanical or electrical fault with the reset button, meaning it cannot process your commands correctly.. It appears on 9 Keston models in our database.
Technical description: Reset key fault – replace fascia PCB
What causes the Keston E38 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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Keston models that show the E38 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Keston E38 fault code information on this page is sourced and cross-checked against the official Keston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026