I have a Goodman CPLE24-1C unit. The air handler is blowing, but the outside condenser won't come on. I can push the contactor bar and the fan motor comes on. I have 24v coming in to the contactor from inside and on both sides of the contactor, 240v in to the contactor on the bottom and 240v when I close the switch. I have the identical unit for the downstairs as well. I have checked/changed the capacitors and contactors between the units and that doesn't change anything. The good unit operates fine with the bad units parts. I pulled the D2 wire from the defrost board and hooked it into the common (left) side of the contactor, but the fan won't come on. My questions are: 1) if the contactor is getting voltage in, what else is there to keep it from energizing? 2) could a reversing valve stuck keep the system from starting? 3) low charge (it's a R22 unit) be a cause? 4) where to go from here? Thank you very much for any help.

I have 2 window units, both only 3 yrs old, 2 different brands. They were both operating fine last season. I just installed them and both 'light up', in that the temp default shows and the controls light up, but 3-5 seconds later, all lights go off and the systems will not start up. The fuse/reset has not been tripped. Hitting reset does nothing, but if I unplug the unit for 5-10 seconds, it will then do the same thing....on, then off. Can anyone suggest what the problem might be?? Wall power is fine, these are plugged into the same outlets they have been plugged into since purchase, circuit breakers are not tripping, but unit never actually starts up. The compressor never gets a chance to start. I never get the chance to set a temperature.