Rooftop a.c. 15000 btu

[Lumberguy]

Replaced the run/start capacitor it was in fact dead. All fans running but the compressor will not start is it just dead or if I tap on it might that coerce it to start.

[BFlinn181]

If tapping on it makes it run, are you then going to cut a hole in the roof so you can reach out and hit the compressor with a hammer everytime you want it to run? An A/C tech could examine the electrical system, control board, and measure the amp draw when it tries to run. That will give an accurate assessment to the health of the unit.

[Lumberguy]

What would be the best sealant to keep that hammer port from leaking...lol thx for response back to repair shop

[sundancer398]

Originally Posted by Lumberguy

What would be the best sealant to keep that hammer port from leaking...lol thx for response back to repair shop

the butt portion of a pair of long johns with rear flap attached to roof, hinge side towards bow, a coating of fiberglass ought to do it. lol

[Raybo]

Your run/ start capacitor is two separate items. The run capacitor normally is a dual capacitor. One terminal for the compressor and the other is for the fan motor. This usually has a metal case. The compressor start is normally a plastic case unit with two terminals. If you were trying to start the compressor with a bad run capacitor the compressor motor will heat up an a internal overload will open the circuit to motor. This normally take about 4 hours to cool down a reset. If the compressor was hot to touch this could of been you problem at that time. If this is not your problem you can use a larger size start capacitor ONE time only to try to break the motor free THEN PUT THE RIGHT ONE BACK ON