AC Compressor Stopped

[Captain Ralph]

Your last picture is of the reversing valve. This changes the system from cooling to heating.
You already have a hard to start Capacitor installed and visually, the metal capacitor is probably bad.
Do you really want to wander in the dark or call in a real A C tech?
IMO, if you only have one pressure switch, It is usually the low pressure cut off.

 

[Photolomy]

It's a high pressure switch. It keeps the unit from running when the coils aren't being cooled, such as when the water pump is inoperative or blocked. It seems their next generation unit had low and high pressure switches. If it turns out to be the compressor, I will call someone, but why would I call someone to replace parts that probably cost $25 or less?

 

[Photolomy]

Thanks for pointing out my misidentification of the reversing valve. That led me to follow the connections to the compressor, and find the fault. A corroded wire / broken connection.



Doesn't seem to be a relay between the switches and the compressor, unless it is in the compressor body. To the right is the thermal overload switch.