E01 High
Your boiler has tried to light several times but cannot establish a flame, causing the system to shut down for safety.
Technical description: Ignition lockout
Typical repair cost: £120-350 (including labour)
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a pre-payment meter, ensure you have sufficient creditPress the reset button on the boiler control panel for 3 to 5 seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like E01 — no call-out fees, no surprises.
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Parts commonly replaced
- Ignition electrode
- Gas valve
- Flame sensing probe
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