02 High
Your boiler has detected an internal temperature issue and has locked itself out to prevent overheating.
Technical description: Failed temperature – try resetting the boiler
Typical repair cost: £120-250 (including labour)
DIY fix possible
Locate the reset button on the front control panelPress and hold the reset button for at least 5 secondsCheck that your radiator valves are open and that the system pressure is between 1 and 1.5 bar
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
- Overheat Thermostat
- NTC Temperature Sensor
- Circulation Pump
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