E270 High
Your boiler has detected that it is overheating because water is not moving through the system properly.
Technical description: Dry fire
Typical repair cost: £120-£350 (including labour)
DIY fix possible
Check that your boiler pressure is between 1 and 1.5 bar on the gaugeEnsure all radiator valves and any isolation valves under the boiler are fully openGently bleed your radiators to remove trapped airReset the boiler to see if the fault clears
Protect yourself from future repair bills
A boiler cover plan would cover faults like E270 — no call-out fees, no surprises.
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Parts commonly replaced
- Circulating Pump
- Main Heat Exchanger
- Temperature NTC Sensors
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