C464 - IPM Over Current (O.C) error

What does C464 mean?

The indoor unit displays C464, indicating an over current error in the IPM (Intelligent Power Module). The outdoor display might show 'Current sensor error'.

• Abnormal surrounding temperature or overload condition
• Faulty current sensor
• Faulty temperature sensor
• Abnormal compressor interphase resistance

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power supply and restart it after 5 minutes.

2. 2

   Ensure the compressor wire is connected normally and securely.

3. 3

   Check that indoor and outdoor temperatures are within normal operating limits and reduce any abnormal load.

4. 4

   Verify the temperature sensor position and ensure it is not separated or giving incorrect readings.

5. 5

   If the error continues, contact a qualified service technician.