BoilerFaultCodesTechnical description
Water pressure sensor signal outside correct range, the sensor signal is too high
What causes this fault?
This fault occurs when the boiler's internal computer receives an electrical signal from the water pressure sensor that is completely outside of its expected range. The most common reason is that the sensor itself has developed an internal electrical short or has become blocked with system debris, causing it to send a false high-voltage reading. In some cases, a damaged or damp wiring harness can also interfere with the signal being sent to the main control board.
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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