Mechanic To Mechanic - Compressor Short **

[DThomas]

I have a Armstrong through-the-wall AC and gas furnace. The compressor and condenser fan short cycle and the contactor remains engage. What could be the *

[nomadpeo]

what type of mechanic are you * it helps to know if you are a car mechanic or a hvac mechanic.

this sounds similar to an entry in another category, but the name is different. the answer is the same. if you have a dual capacitor, it is probably the culprit.

[derrold_d]

its not the capacitor. its a pressure switch. they wont come on for a bit then back off because of a cap.

[nomadpeo]

a pressure switch would disengage the contactor. if the dual cap is out, each motor could be overloading and trying to run, then opening on internal overload.