BoilerFaultCodesYour boiler’s internal control board has likely encountered an electrical malfunction, meaning the system cannot safely start or manage the heating process.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: PCB Failure
What causes this fault?
This fault occurs when the boiler's main control board suffers a hardware failure, meaning it can no longer send the correct electrical signals to components like the gas valve or fan. The most common reason is age-related wear on the board's capacitors 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
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like LED 1 (RESET) ON, LED 2 (BURNER LIT) ON — no call-out fees, no surprises.
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