Discharge pipe sensor abnormal — RUN LED flashes 3 times, TIMER LED flashes 9 times

What does 39 mean?

The discharge pipe sensor is reporting abnormal readings (its value exceeds the set limit) or its wire is disconnected, leading to an anomalous stop of the unit.

• Discharge pipe sensor wire is disconnected
• Poor connector connections for the sensor
• Faulty outdoor PCB

Click steps to track your progress.

1. 1

   Turn off the main power to the unit.

2. 2

   Locate the discharge pipe sensor, typically on the compressor discharge line.

3. 3

   Inspect the sensor wire for any visible disconnections, cuts, or damage.

4. 4

   Check the connector connections for the sensor, ensuring they are securely plugged in and free from corrosion.

5. 5

   Reconnect any loose wires or connectors firmly.