BoilerFaultCodesYour boiler has stopped working because the water pressure is too low to operate safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Low system pressure on installation, check the pressure gauge. The required minimum system pressure cold is 1.0 bar.
What causes this fault?
This fault occurs when the internal sensors detect that there isn't enough water circulating through the pipes and radiators. The most common reason is a small leak somewhere in the system or because the radiators were recently bled, causing the overall pressure to drop below the safe operating limit.
This code often appears in autumn when homeowners turn their heating back on for the first time after summer, as stagnant seals may have leaked or air has settled in the radiators.
DIY fix possible
Locate the filling loop (a flexible silver hose with one or two small taps/levers) underneath your boiler.Slowly open the tap or taps until you hear water entering the system.Watch the pressure gauge and close the taps firmly once it reaches 1.5 bar, then restart the boiler.
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A boiler cover plan would cover faults like LE — no call-out fees, no surprises.
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