OK I am by fair a A/C tech but I do understand voltage to a certain point.
Outside contactor energizes and nothing is happening....evaporator fan is running inside but no cold air
Checked Compressor and it OHMs out good
Also checked the fan and it too checks out good!
Checked voltage @ the main panel 120v to GND (L1 and L2) and 240v across (L1 to L2)---good!
Now I followed this vid and here is what I get.....
w/the contactor energized (inside fan running) w/24V @ the coil --- voltage readings @ L1 & L2 @ the bottom of contactor 120v to GND but phase to phase I get 0v. @ the top of the energized contactor I get 120v to ground, but phase to phase I get 0v. I should be getting 240v on top and bottom of a energized contactor.... right?? The only hmmm I hear is the contactor....no motor trying to start--- nothing!
So I think I have a problem w/my FLUKE meter....Soo I check the voltage @ the panel--- 120v to ground (L1 and L2) and 220v phase to phase (L1 to L2).
Now get this.....when I shutdown the system down OFF @ the thermostat the contactor DE-energizes I get 120v on one of the incoming lines and 0v on the other incoming line.....what the heck is up!?!
Is there something in the evaporator unit I am missing??
1st thing I thought it was was a bad capacitor just because it seemed to show all the signs of a bad cap ...its happened before so I took it upon myself to replace it and I still get nothing....
Its getting hotter in SE Texas need some guidance!
Edited by rolandvz71, 19 May 2013 - 10:23 PM.