Pipe Sensor Abnormal

¿Qué significa P2 ?

The indoor coil pipe sensor is abnormal, indicating an open circuit, short circuit, or incorrect resistance. This prevents accurate refrigerant temperature monitoring, which is critical for defrost logic and coil protection.

• Pipe sensor (21) is abnormal.
• Faulty temperature/pressure sensor on a pipe.
• Wiring issue to the pipe sensor.

Haga clic en los pasos para seguir su progreso.

1. 1

   Measure the resistance of the pipe sensor at its leads — compare to a resistance-temperature chart if available.

2. 2

   Inspect the sensor's wiring and connector on the indoor unit PCB for damage, corrosion, or secure seating.

3. 3

   Verify the sensor is securely attached to the refrigerant pipe for proper thermal contact.