BoilerFaultCodesTechnical description
Water pressure sensor not connected or has short-circuited
What causes this fault?
This fault occurs when the boiler's main control board loses electrical communication with the water pressure sensor. The most common reason is a loose or damaged connection in the internal wiring, or the sensor itself has developed an electrical fault and failed. Without this signal, the boiler shuts down as a safety precaution because it cannot confirm there is enough water to operate without overheating.
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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