F002 High
Your boiler has shut down because the hot water has reached a temperature that is dangerously high.
Technical description: Temperature too high during domestic hot water (DHW) demand
Typical repair cost: £120-£280 (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 F002 — no call-out fees, no surprises.
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Parts commonly replaced
- DHW temperature sensor (NTC)
- Diverter valve motor
- Main heat exchanger (descale)
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