BoilerFaultCodesYour boiler has lost its internal configuration settings and needs to be reprogrammed to work correctly again.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Default parameters
What causes this fault?
This fault occurs when the boiler's central control board loses its memory or fails to communicate with the internal identity chip. This is usually caused by an electrical surge, a failing component on the circuit board, or a loose connection to the code plug that stores the unit's unique settings.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like e — no call-out fees, no surprises.
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