E119 High
Your boiler has lost water pressure and has stopped working to protect itself from damage.
Technical description: Water pressure switch error – not operated.
Typical repair cost: £0-160 (including labour)
DIY fix possible
Locate the filling loop (the flexible braided hose) underneath or near the boiler.Slowly open the tap or valve(s) on the loop while watching the pressure gauge.Close the tap or valve(s) tightly once the gauge reaches between 1 and 1.5 bar.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E119 — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop
- Water pressure sensor
- Expansion vessel
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