E110 High
Your boiler has switched itself off because it has become too hot internally and needs to cool down for safety.
Technical description: Boiler overheat tripped
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Turn the boiler off and allow it to cool for at least 30 minutes.Check that your radiator valves are open and that the system pressure is between 1 and 1.5 bar.Turn the selector switch to the reset position for five seconds and then back to your desired setting.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E110 — no call-out fees, no surprises.
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Parts commonly replaced
- Overheat Thermostat
- Circulation Pump
- Thermistor (NTC Sensor)
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