E128 High
Your boiler started to heat up but the flame went out unexpectedly while it was running.
Technical description: Loss of flame during operation
Typical repair cost: £120-£350 (including labour)
DIY fix possible
Check that your gas emergency control valve is fully openIf you have a prepaid gas meter, check that you have sufficient creditAttempt to reset the boiler by turning the selector switch to 'R' for five seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like E128 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Ignition lead
- Gas valve
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