BoilerFaultCodesYour boiler has encountered a general electrical failure, likely caused by moisture or damage to the internal brain of the unit.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Other faults not covered by above - Light indication during fault not covered by above details. Control board is likely to be wet or damaged or malfunctioning.
What causes this fault?
This fault occurs when the boiler's internal computer experiences a critical communication failure or hardware malfunction. The most common reason is moisture ingress from a small leak or heavy condensation getting onto the electrical circuits, though the components can also simply fail over time due to heat stress.
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 FAIL POINT K — no call-out fees, no surprises.
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