Air Conditioning - heat pump motor not energized

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jnrkara
08-04-09, 08:21 PM
I have replaced the capacitor recently. My unit has a start assist relay as well (I think it is my problem). I can manually push in the power supply contacts with a screw driver and unit fires up just fine. I remove screw driver and unit quits. I again hold screw driver on power supply let it run for 2 minutes and the unit works fine. Any help with this issue will be much appreciated and THANK YOU in advance!! Rick


dun11
08-05-09, 05:15 AM
Do you have 24v at the coil on the contactor?

Was the cap you replaced a duel comp and fan cap?

jnrkara
08-05-09, 05:34 AM
yes duel cap.
24v at coil cont. I am not sure where that is.
Maybe I should just call the pros in,before I electricute myself.


dun11
08-05-09, 05:43 AM
If you don't have a meter and are not comfortable using one and working with electrical components that may be best.

jnrkara
08-05-09, 06:28 AM
I figured it would be an "easy" fix..Because the A/C does work fine if I do the procedure in original post.
Thank You for your time!
Rick

sammy37
08-05-09, 01:43 PM
I have replaced the capacitor recently. My unit has a start assist relay as well (I think it is my problem). I can manually push in the power supply contacts with a screw driver and unit fires up just fine. I remove screw driver and unit quits. I again hold screw driver on power supply let it run for 2 minutes and the unit works fine. Any help with this issue will be much appreciated and THANK YOU in advance!! Rick

The contacts that you are pushing, are on the contactor, this contactor has a coil underneath it that requires 24volts to engage the contacts together.
If you want to avoid getting zapped, you can shut the breaker off to the outside unit but leave the thermostat on cool and check to see if you are getting 24 volts to the contactor.
Take a look down near the bottom of the contactor and you will see the wires that are attached to the coil. This coil receives power from the unit in the house.
If you have power coming into the contactor, then it is probably no good. If you dont have power to it, then you either have a problem with the indoor unit, bad thermostat, or a broken wire leading out to the outdoor unit.