E 89 High
Your boiler has stopped working because it cannot detect a stable flame, often due to a problem with the gas supply or a faulty internal sensor.
Technical description: Problem on combustion feedback signal – gas pressure needs checking.
Typical repair cost: £120-£350 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E 89 — no call-out fees, no surprises.
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Parts commonly replaced
- Gas valve
- Ionisation electrode
- PCB
- Gas pressure regulator
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