E117 Emergency
Your boiler has shut down because there is too much water pressure in the system, which could lead to leaks if not addressed.
Technical description: System pressure too high (>2.9 bar)
Typical repair cost: £0-120 (including labour)
DIY fix possible
Check that the filling loop valves (the silver flexible hose) are tightly closed.Locate a radiator bleed valve and use a key to release water into a container until the pressure gauge on the boiler drops to 1.5 bar.Reset the boiler to clear the fault code.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E117 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Filling loop valve
- Expansion vessel
- Pressure relief valve
*Affiliate links — we may earn a commission at no extra cost to you.