E131 High
Your boiler has shut down because the exhaust gases have reached a dangerously high temperature, triggering a safety sensor to prevent damage.
Technical description: Flue overheat lockout
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 E131 — no call-out fees, no surprises.
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Parts commonly replaced
- Heat Exchanger (Cleaning/Descaling)
- Flue Thermistor
- Main Heat Exchanger
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