BoilerFaultCodesYour boiler has stopped working because the water pressure is too low for the system to run safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The system needs re-pressurising (check pressure gauge)
What causes this fault?
This fault occurs when the internal water pressure drops below the minimum level required for the boiler to operate safely. The most common reasons are a slow leak hidden somewhere in your radiator system or air being released through a safety valve.
This issue often occurs in autumn when the heating is turned on for the first time after summer, as air pockets and thermal expansion can cause the pressure to fluctuate.
DIY fix possible
Locate the filling loop (the silver flexible hose) underneath or near the boiler.Slowly open the one or two taps/valves on the filling loop until you hear water entering the system.Watch the pressure gauge on the front of the boiler and close the taps once the needle reaches between 1 and 1.5 bar.Restart or reset the boiler by turning the mode selector switch to 'OFF/RESET' and then back to heating/hot water.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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