Time constant refrigerant corrodes pipes, expansion valves and compressors, resulting in blockage. Why didn't you start work? Generally, the compressor will protect itself, and the expansion valve will fail or the compressor will be stuck.

Capacitance only changes the current. The home is AC, and the compressor is DC. Capacitance changes alternating current.

The starter has no capacity at all, which is probably the self-protection of the compressor. Testing the air conditioner 10 can reflect the problem.