Low water pressure High
Your boiler has detected that the water level inside the system is too low to run safely, which has caused it to shut down to prevent damage.
Technical description: Low water pressure
Typical repair cost: £0-160 (including labour)
DIY fix possible
Locate the filling loop (usually a silver flexible hose) underneath your boiler.Open the one or two small tap handles on the loop slowly until you hear water running.Watch the digital display or pressure gauge until it reaches 1.5 bar, then close the taps tightly.
Protect yourself from future repair bills
A boiler cover plan would cover faults like Low water pressure — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop valve
- Expansion vessel
- Pressure relief valve
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