Phenomenon：

After the compressor start, the compressor stops, it pulls itself like an old diesel engine at start, than stops operating. 

On the comressor there is a board, which has a LED on it. LED blinks 9 times before stops operating.

Solution :

Judging from the inverter board light flashing nine times and the abnormal sound of the compressor,

there is a problem with the circuit, and it is also Dead Starting.

Please note，

①     Remove the inverter board of the compressor and check the resistance of the three columns. Connect each pair of the three columns.

If the resistance is normal, it should be consistent. If the resistance is not consistent, the compressor is broken and needs to be replaced.

②     If the high-pressure end is blocked, evacuate and refill.

③     If there is Dead Starting, check the contact of the plugs and the condition of the lines from the main control board to the inverter board and from the inverter board to the compressor.