C Schomer wrote:
Diagnosing the compressor is fast. First- check for burnt compressor terminals or burnt O.L. Second- ohm the windings, with cool compressssor, to be sure the internal O.L. is closed.. c-r ohms plus c-s ohms = r-s ohms? If not, kiss the compressor goodbye. Third- There IS a bypass tool called an Annie. Unplug the comp. wires and hook up the Annie, which has manual switches and the capacitors inside, and hit the on and then start button. If it still doesn't start... kiss the compressor goodbye. If it starts, use the volt meter to follow the path to the comp terminals to see whats wrong.
It sound like you know what you're doing. You can do it all with a vom and amp-probe but an Annie makes it fast. I built an Annie in school, mid 70s, for extra points. I bought an Amprobe, vom and a cap. tester as soon as I was out of trade school and they've been indispensable.
Your relay looks like a potential relay and pickup/dropout voltages are critical but who knows what's on these cheap, sh!tty units! Craig
I caught about half of what you said. Everything I learned about capacitors, relays and compressors I learned in the past week working on this AC.
The compressor has a red wire, white wire and black wire connected to it. What do I place where and on what setting to test it for what ever it is i'm looking for?
I checked the leads with wires connected in every combination with the meter on ohms and got a sound on every one.
Should I test the wires this same way while disconnected from the compressor?
The leads on the compressor with wires disconnected?
For further reference my AC looks nearly identical to this one which is what lead me to believe it was the capacitors at first except in my case the fan worked fine.
https://www.youtube.com/watch?v=Ty_ou_TW5EM
