BoilerFaultCodesTechnical description
Pressure drop in heating system too rapid
What causes this fault?
This fault occurs when the boiler's internal sensor detects a sudden and significant loss of water pressure within a short timeframe. The most common reason is a major leak in your radiators or pipework, though it can also be triggered by a failing component inside the boiler that is incorrectly reading the pressure levels.
This fault is more common in autumn when homeowners first turn their central heating back on after summer, as the change in temperature and pressure can expose weak seals or pinhole leaks.
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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