BoilerFaultCodesTechnical description
Low water pressure
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 operate safely. The most common reasons are a slow leak from a radiator valve or pipework, or the air pressure inside the internal expansion vessel needs topping up.
This fault often appears when you first turn the heating back on for autumn, as internal components can stick or minor leaks become apparent after a summer of inactivity.
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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