E37 High
Your boiler has detected that the water pressure is too low, which has caused it to stop working to avoid damage.
Technical description: Water pressure error – increase water pressure
Typical repair cost: £0-120 (including labour)
DIY fix possible
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Open the taps on the filling loop slowly until you hear water entering the system.Watch the pressure gauge and close the taps once the needle reaches 1.5 bar.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E37 — 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
- Expansion vessel
- Pressure sensor
*Affiliate links — we may earn a commission at no extra cost to you.