BoilerFaultCodesTechnical description
Low water pressure in heating system – parameter is adjusted wrong
What causes this fault?
This fault occurs when the boiler detects that there isn't enough water pressure to safely circulate heat around your home. The most common reason is a slow leak in the radiator system or air being released from the pipework, causing the pressure to drop below the minimum safety threshold.
This issue often appears in autumn when the heating is turned on for the first time after summer, as the change in temperature can highlight small leaks or trapped air.
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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