E110 High
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
Technical description: Boiler overheat error
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Allow the boiler to cool down for 30 minutesCheck that your radiator valves are open and not turned to offPress and hold the 'R' or 'Reset' button for five seconds
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
- Temperature sensors (NTC thermistors)
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