E090 High
Your boiler has sensed that the exhaust fumes are getting too hot and has shut down as a safety precaution to prevent damage.
Technical description: Flue gases over temperature probe
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 E090 — no call-out fees, no surprises.
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Parts commonly replaced
- Main Heat Exchanger
- Flue NTC Thermistor
- Burner Door Insulation
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