BoilerFaultCodesTechnical description
Water pressure sensor signal out of range (too low) | Cable to water pressure sensor is broken or has a short-circuit at 0 V or water pressure sensor defective
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the component that measures water pressure. The most common reason is a failed digital sensor that has worn out internally or a break in the thin wires connecting that sensor to the main control board. Because the boiler can no longer verify if there is enough water to operate safely, it shuts down to prevent 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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