02 High
Your boiler has shut itself down as a safety precaution because it has detected an overheating issue within the system.
Technical description: Burner control switches to 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 02 — no call-out fees, no surprises.
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Parts commonly replaced
- Circulation pump
- Overheat thermostat
- Heat exchanger (cleaning/flush)
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