BoilerFaultCodesYour boiler's internal computer brain has developed a critical electronic fault and can no longer control the heating system safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal failure - electronic
What causes this fault?
This fault occurs when the boiler's main control board has suffered a terminal hardware failure and is no longer able to communicate with the rest of the system. The most common reason is age-related wear on the electronic components or a sudden electrical surge that has damaged the delicate circuitry.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 442 — no call-out fees, no surprises.
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