D.69 High
Your boiler has failed to light the flame twice in a row, which means the system has stopped working for your safety.
Technical description: Unsuccessful ignition for the second time
Typical repair cost: £100-350 (including labour)
DIY fix possible
Check if your gas meter has credit and the gas supply valve is openCheck if other gas appliances in your home are workingPress the Reset button (indicated by a flame with a line through it) for five seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.69 — no call-out fees, no surprises.
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Parts commonly replaced
- Ignition electrodes
- Gas valve
- Printed Circuit Board (PCB)
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