H.03 – .02 High
Your boiler has lost its flame while it was running, which means it has stopped providing heating and hot water for safety reasons.
Technical description: Flame error – no flame during operation.
Typical repair cost: £120-350 (including labour)
DIY fix possible
Check if other gas appliances in your home, like a hob, are working to confirm gas supply.Ensure your gas meter has credit if you use a prepay meter.Press and hold the Reset button for five seconds to see if the boiler restarts.
Protect yourself from future repair bills
A boiler cover plan would cover faults like H.03 – .02 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Gas valve
- Ignition lead
- PCB
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