E133 High
Your boiler has failed to light a flame, which is usually caused by a temporary interruption in the gas supply or a frozen condensation pipe.
Technical description: Possible gas supply issue (failure to light)
Typical repair cost: £100-£250 (including labour)
DIY fix possible
Check that your gas meter has credit and the isolation valve is openIf it is freezing outside, check if the plastic condensation pipe leading outdoors is frozen and thaw it with warm waterPress and hold the 'Reset' button for five seconds to restart the ignition sequence
Protect yourself from future repair bills
A boiler cover plan would cover faults like E133 — no call-out fees, no surprises.
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Parts commonly replaced
- Ignition Electrode
- Gas Valve
- Flame Sensing Probe
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