117 Emergency
Your boiler has too much water in the system, which puts extra stress on the internal parts and may cause it to shut down for safety.
Technical description: Water pressure too high
Typical repair cost: £80-160 (including labour)
DIY fix possible
Locate a radiator bleed valve and use a key to slowly release water into a container.Monitor the boiler pressure gauge until the needle returns to the normal 'green' zone (usually 1.0 to 1.5 bar).Ensure the internal filling loop or external filling valves are fully closed and tight.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 117 — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop valve
- Pressure Relief Valve (PRV)
- Expansion vessel
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