Hello, Before I call the pros, I am going to do some basic troubleshooting on my central AC. The fan and compressor are not coming on. I can hear a low-voltage hum. I will start with a meter to make sure 220v is getting to the contactor and also 220v is coming out of the contactor. . Since I don't have any experience with 220v, I would prefer to not belt myself. Out of the wall is a pink and black wire to the contactor. Where do I put the meter leads to test it? Any danger moving the leads from terminal to terminal as long as I don't hold the leads by the metal end (just kidding). Also, when the unit comes on, should I see the contactor move, or click, or what?? I didn't see anything like that, so I am thinking
220v is not getting to the unit. . Thanks for your time.-jack