101 High
Your boiler has shut down because it has detected that the water inside is getting too hot, known as overheating.
Technical description: All Boilers
Typical repair cost: £100-350 (including labour)
DIY fix possible
Wait 20 to 30 minutes for the system to cool down completely.Ensure all radiator valves are fully open to allow water to flow.Press the 'Reset' button on the front control panel to restart the boiler.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 101 — no call-out fees, no surprises.
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Parts commonly replaced
- Overheat Thermostat
- Circulation Pump
- Main Heat Exchanger
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