E270 High
Your boiler has detected that water is not moving through the system correctly, causing it to overheat quickly.
Technical description: Circulation fault (dry fire)
Typical repair cost: £150-£350 (including labour)
DIY fix possible
Check that your boiler pressure is between 1 and 1.5 bar on the gauge.Ensure all radiator valves and isolation valves under the boiler are fully open.Gently bleed your radiators to remove any trapped air pockets.Reset 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
- Circulation Pump
- Main Heat Exchanger
- Overheat Thermostat
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