Fault code 43 — High pressure sensor fault

What does 43 mean?

The high-pressure sensor is malfunctioning. This could be due to a loose connection, a faulty sensor, or an issue with the sampling circuit on the main PCB.

• The wiring of the high-pressure pressure sensor connect is loose
• The high-pressure pressure sensor fails
• The sampling circuit of the high pressure pressure sensor fails

Click steps to track your progress.

1. 1

   Reconnect the wiring of the high-pressure sensor.

2. 2

   Replace the high-pressure sensor if the connection is secure.

3. 3

   If the fault continues, the outdoor Main PCB may require replacement.