F.73 - Water pressure sensor signal too low

What does F.73 mean?

The water pressure sensor is sending a signal that is too low or out of the correct range. This could be due to an interruption, short circuit, or a defective sensor.

• Interruption or short circuit of the water pressure sensor.
• Interruption or short circuit to ground in the supply line to the water pressure sensor.
• The water pressure sensor itself is defective.

Click steps to track your progress.

1. 1

   Press the reset button on the boiler display up to three times to try and clear the fault.

2. 2

   Contact customer service. This fault points to an issue with the water pressure sensor, its wiring, or a short circuit.

3. 3

   A qualified technician will need to check the water pressure sensor and its connections for faults.