BoilerFaultCodes.com
LED 1 (RESET) OFF, LED 2 (BURNER LIT) OFF High Lockout

Your boiler appears to have lost power or has suffered an internal electronics failure, meaning it cannot start up to provide heat.

Call an engineer soon

Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Other Errors

What causes this fault?

This fault occurs when the boiler's internal computer, or PCB, fails to receive electrical power or stops processing signals correctly. The most common reason is a blown fuse on the board caused by a power surge, though it can also happen if moisture or age has caused the electronic components to wear out completely.

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that the main power switch for the boiler is turned onCheck your home's consumer unit (fuse box) to see if a circuit has trippedEnsure the gas supply is active by checking other gas appliances

Find a Gas Safe engineer

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Protect yourself from future repair bills

A boiler cover plan would cover faults like LED 1 (RESET) OFF, LED 2 (BURNER LIT) OFF — no call-out fees, no surprises.

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