E270 High
Your boiler has sensed it is getting too hot too quickly, likely because water isn't moving through the system properly.
Technical description: Circulation fault (dry fire).
Typical repair cost: £150-350 (including labour)
DIY fix possible
Check that the boiler pressure is between 1.0 and 1.5 bar on the gauge; top up if it is too low.Ensure all radiator valves and isolation valves under the boiler are fully open.Bleed all radiators to remove trapped air that might be blocking water flow.Turn the boiler off and back on again 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
- Heat Exchanger (De-scaling)
- Main PCB
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