H.02 – .03 High
Your boiler is temporarily confused by its internal software settings and cannot start up correctly.
Technical description: Temporary error- incorrect configuration settings C1/C2.
Typical repair cost: £80-160 (including labour)
DIY fix possible
Locate the selector switch or reset button on the front of the boiler.Turn the switch to the 'R' (Reset) position and hold for at least 5 seconds.Wait for the boiler to restart; if the code repeats, a Gas Safe engineer must reconfigure the internal board.
Protect yourself from future repair bills
A boiler cover plan would cover faults like H.02 – .03 — no call-out fees, no surprises.
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Parts commonly replaced
- Printed Circuit Board (PCB)
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