E135 High
Your boiler has lost its gas supply or detected an internal error, causing it to shut down for safety.
Technical description: Internal error (interruption of gas supply)
Typical repair cost: £100-280 (including labour)
DIY fix possible
Check that your gas emergency control valve is in the open positionIf you have a prepayment meter, ensure you have credit and that the meter is not lockedCheck if other gas appliances, like a hob, are working to confirm gas flowReset 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 E135 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas Valve
- Ignition Electrode
- PCB
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