How To Start Ac Compressor Manually. It should be connected to the AC compressor also. One of the many things that can make a refrigerator warm up is the compressor is trying but failing to start.

Identify the hot wire going to the compressor clutch - or the wire going to it from the low pressure switch. Turn the compressor flywheel by hand one turn. First turn ON the AC and fan to the maximum.
Attach a jumper wire to the wire you disconnected from the compressor.
I think you will have to beg steal or borrow rectifier with sufficient power voltage and amperage to run the inverter. Examine the oil level in the compressor. What signal ground 12V 5V or similar. AC blows warm air.
