BoilerFaultCodesTechnical description
LOW CENTRAL HEATING WATER PRESSURE
What causes this fault?
This fault occurs when the water level inside your 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 a failure in internal components like the expansion vessel which helps manage system pressure.
This issue is frequently seen in autumn when the heating is turned on for the first time after summer, as the change in temperature can highlight existing small leaks or pressure drops.
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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