110 High
Your boiler has reached an unsafe temperature and has shut down to protect its internal components and your home's pipework.
Technical description: Exceeded safety temperature
Typical repair cost: £120-350 (including labour)
DIY fix possible
Ensure all radiator valves are fully open to allow water to circulate.Check that your system water pressure is between 1.0 and 1.5 bar on the gauge.Restart the boiler using the 'Reset' button once the unit has cooled down.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 110 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Circulation pump
- Overheat thermostat
- Main heat exchanger (de-scaling)
*Affiliate links — we may earn a commission at no extra cost to you.