E110 High
Your boiler has switched itself off because it has reached an unsafe temperature, usually due to a lack of water flow or a circulation problem.
Technical description: Safety thermostat operated
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Check if your radiator valves are openCheck the boiler pressure gauge and top up to 1.5 bar if lowPress the 'R' or 'Reset' button for 2 seconds once the boiler has cooled down
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
- Internal Pipework (unblocking)
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