BoilerFaultCodesTechnical description
System pressure sensor fault
What causes this fault?
This fault occurs when the electronic sensor responsible for monitoring the water level inside the boiler fails or provides an illogical reading. The most common reason is that the sensor's internal diaphragm has become blocked with system sludge or the electrical connections have corroded over time. Because the boiler cannot confirm there is enough water to operate safely, it shuts down to prevent internal 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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