E117 Emergency
Your boiler has detected that there is too much water pressure in the system, which can cause it to shut down for safety.
Technical description: System water pressure high – try bleeding water from your radiators
Typical repair cost: £0-120 (including labour)
DIY fix possible
Locate a radiator bleed valve and a radiator key.Place a cloth or bowl under the valve and slowly turn the key anti-clockwise to release some water.Monitor the boiler's pressure gauge until it falls back into the green zone (usually 1.0 to 1.5 bar).
Protect yourself from future repair bills
A boiler cover plan would cover faults like E117 — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop valve
- Expansion vessel
- Pressure relief valve (PRV)
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