C154 - Indoor fan error

What does C154 mean?

The indoor unit displays C154, indicating an error with the indoor BLDC (Brushless DC) fan motor. This means the indoor fan is not operating correctly or its speed cannot be detected.

• Indoor fan motor not properly connected
• Incorrect AC voltage to the fan
• Short circuit within the fan motor
• Faulty fan motor
• Faulty indoor unit main board (PBA)

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power supply.

2. 2

   Verify the indoor unit's fan motor is securely connected to its connector (CN900).

3. 3

   Ensure the AC voltage supply to the unit is correct.

4. 4

   After checking connections, restart the unit and observe fan operation.

5. 5

   If the problem persists, contact a qualified technician as the fan motor or indoor PBA may need replacement.