F07 High
Your boiler has shut down because it has detected that the internal exhaust gases are becoming too hot, which can indicate a blockage or a build-up of debris inside the main heat exchanger.
Technical description: High fume temperature – the exchanger probe detects an excessive temperature for over 2 minutes – check the exchanger.
Typical repair cost: £180-£450 (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 F07 — no call-out fees, no surprises.
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Parts commonly replaced
- Main Heat Exchanger
- Fume Temperature Probe
- Heat Exchanger Insulation Panel
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