LCD shows P2 - Abnormality of pipe temperature thermistor/Liquid

What does P2 mean?

The remote controller LCD displays 'P2', indicating an abnormality with the pipe temperature thermistor (TH2) on the liquid line.

• Pipe temperature thermistor (TH2) malfunction.
• Loose or disconnected thermistor wiring.
• Improper placement of the thermistor on the pipe.

Click steps to track your progress.

1. 1

   Check if the thermistor (TH2) is securely attached to the liquid pipe and its wiring is intact.

2. 2

   Inspect the connections of the pipe thermistor to the indoor unit's control board.

3. 3

   If accessible, measure the resistance of the thermistor to verify its functionality (consult service manual for values).