BoilerFaultCodesTechnical description
Water pressure sensor fault. Faulty sensor connection. Check wiring
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that measures water levels within the system. The most common reason is that the sensor has suffered an electrical failure or has become blocked by debris and sludge, preventing it from sending a reliable reading. Because the boiler cannot confirm there is enough water to operate safely without overheating, it shuts down as a precaution.
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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