BoilerFaultCodesYour boiler has lost water pressure and has shut down as a safety precaution to prevents damage.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Boiler is not working for central heating or hot water and the display shows ‘LLLLL:::::EEEEE ’ (flashing). Indicates low water pressure/loss of system water pressure.
What causes this fault?
This fault occurs when the water level inside your central heating system drops below the minimum required for the boiler to operate safely. The most common reason is a slow leak from a radiator valve or pipework, but it can also happen if you have recently bled your radiators and haven't topped the pressure back up.
This issue is more common in autumn when homeowners turn their heating back on for the first time, as the change in temperature and pressure can expose small leaks that developed while the system was idle.
DIY fix possible
Locate the filling loop (usually a silver braided hose with small valves underneath the boiler).Slowly open the valves until you hear water entering the system.Watch the pressure gauge and close the valves once it reaches between 1.0 and 1.5 bar.
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A boiler cover plan would cover faults like E — no call-out fees, no surprises.
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