Error 18 — Compressor motor desynchronizing

What does [18] Compressor motor desynchronizing mean?

The compressor motor is desynchronizing, which can be caused by overload, sudden load fluctuations, a faulty compressor current sensor circuit, or a missing inverter gate drive signal.

• The power supply is abnormal
• Incorrect compressor wiring
• The power module is bad
• The compressor is bad
• The system is overloaded

Click steps to track your progress.

1. 1

   Check for a correct power supply and ensure the supply voltage is normal.

2. 2

   Verify the wiring between the power module and the compressor is correct.

3. 3

   Check if the power module is normal.

4. 4

   Check if the compressor is normal (test coil resistance and insulation).

5. 5

   Correct the wiring according to the diagram.

6. 6

   If the compressor load is too high, find the reason.