Error 5202 – Low-pressure sensor fault

What does 5202 mean?

The system detects an abnormal reading from the low-pressure sensor (4.06 MPa / 589 psi or above). The unit may continue operating by using other sensors as a backup, but this indicates a potential issue.

• Low-pressure sensor failure
• Pressure drop due to refrigerant leak
• Torn wire coating or disconnected wire on sensor cable
• Missing pin or contact failure on male connector
• Low pressure sensor input circuit failure on the control board

Click steps to track your progress.

1. 1

   Check the low-pressure sensor and its wiring for any physical damage or disconnections.

2. 2

   Inspect for any signs of refrigerant leaks, which can cause a pressure drop in the system.

3. 3

   Verify all connections to the low-pressure sensor and on the control board are secure.

4. 4

   If no visible issues are found, the sensor or control board may need professional inspection.