BoilerFaultCodesTechnical description
Safety switch-off – low water pressure in boiler
What causes this fault?
This fault occurs when the water pressure inside your heating system drops below the minimum level required for the boiler to fire up safely. The most common reason is a slow leak from a radiator valve or pipework, though it can also happen if you have recently bled your radiators and haven't topped the pressure back up.
This fault often appears in autumn when homeowners turn their heating back on for the first time, as small leaks may have developed or radiators may have been bled during the summer break.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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