E10 High
Your boiler has lost water pressure or cannot move water around the system, which has caused it to stop working for safety.
Technical description: Poor/No circulation
Typical repair cost: £0-180 (including labour)
DIY fix possible
Check the pressure gauge on the front of the boiler or under the casing.If the needle is below 1 bar, locate the filling loop (braided silver hose) under the boiler.Slowly open the valve(s) until the pressure reaches 1.5 bar, then close them tightly.Restart the boiler to see if the fault clears.
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
- Circulation pump
- Water pressure switch
- Expansion vessel
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