E10 Emergency
Your boiler has too much water in the system, which puts extra stress on the internal components.
Technical description: High water pressure
Typical repair cost: £80-160 (including labour)
DIY fix possible
Check that the filling loop valves under the boiler are tightly closed.Locate a radiator and use a bleed key to release water into a container until the pressure gauge on the boiler drops to 1.5 bar.Restart the boiler once the pressure is back in the green zone.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E10 — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop valve
- Expansion vessel
- Pressure relief valve
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