BoilerFaultCodesYour boiler has detected that the water pressure is too low to operate safely and has shut down to prevent damage.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Low water pressure fault
What causes this fault?
This fault occurs when the water level inside your central heating system drops below the minimum level required for the boiler to pump heat around your home. The most common reasons for this are a leak somewhere in the pipework or radiators, or the air pressure in your expansion vessel needing to be recharged.
This fault is frequently seen in autumn when the heating is first switched back on after summer, as the system settles and reveals pressure losses that occurred while it was dormant.
DIY fix possible
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the one or two taps on the hose until you hear water flowing.Watch the pressure gauge until it reaches between 1.0 and 1.5 bar, then close the taps fully.
Find a Gas Safe engineer
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Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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