HELP!!!! Condenser fan motor replacement

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HELP!!!! Condenser fan motor replacement

Postby cujok » Thu Jul 18, 2013 6:28 am

This is a follow up help request to my first post.

It now seems that my compressor and condenser fan will start up and run for a short while and then the condenser fan starts to make noise and slows down eventually stopping. It is humming very loudly at this point so I pull the power disconnect. The motor will spin freely but if I try to turn on the power it hums loudly and becomes very hard to turn then. After it cools down for about a half hour or so I can repeat the process. It does cool properly when it is running. I am still awaiting the delivery of a new condenser fan motor on Friday but am wondering now if that's my only problem. I suspect the dual compressor/condenser fan capacitor may be bad also. Any help would be greatly appreciated. It's getting hot in here and is expected to be in the 90's again today.
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Postby Freon » Thu Jul 18, 2013 3:13 pm

Replace the dual capacitor with one that is IDENTICAL... it's a $15 item. Mark the wires as you disconnect them with the disconnect to the condenser pulled. If the motor spins freely then the bearings are okay. Do the capacitor before trying a new motor... you may save yourself money and headaches.
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Postby cujok » Thu Jul 18, 2013 3:23 pm

Thanks Freon. Freon -
> Replace the dual capacitor with one that is IDENTICAL... it's a $15 item. Mark the
> wires as you disconnect them with the disconnect to the condenser pulled. If the
> motor spins freely then the bearings are okay. Do the capacitor before trying a
> new motor... you may save yourself money and headaches.


I'm assuming the terminals are marked on the capacitors so I know which wires go to which terminals.
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Postby cujok » Thu Jul 18, 2013 7:34 pm

Okay the motor is a ProTech and has 5 wires. My old motor has 3 wires. I'm trying to figure out how to connect the five wires to the capacitor. I have the following connections on the capacitor (as you already know) Fan, 'C' and HERM.

I have the following wires from the new fan motor.
Orange, Purple, Brown, Yellow & Black.

The compressor connects to HERM and I think the Orange from the motor connects to 'C' and Brown & Yellow connect together. Purple goes to Fan and Black connects to the fan relay. I have pictures if someone wants to contact me directly.

I would really appreciate some help here. It's not getting any cooler in this house. I did manage to snag a window unit for our bedroom. We are having record temps close to 100 here in VA.

Thanks - Jerry
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- HELP!!!! Condenser fan motor replacement

Postby Freon » Fri Jul 19, 2013 9:56 am

Did you try a NEW capacitor with the OLD motor? The new motor should have the wiring diagram you need.
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Postby cujok » Fri Jul 19, 2013 10:00 am

I'm going to replace them both. They are about 15 years old.
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- HELP!!!! Condenser fan motor replacement

Postby cujok » Fri Jul 19, 2013 12:43 pm

Okay job done and successful. That condenser fan hasn't been that quiet since it was new. Been running for 1.5 hours without a problem.
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- HELP!!!! Condenser fan motor replacement

Postby hvacsystemtalk » Sat Apr 12, 2014 10:09 am

Same with my motor trouble. Thanks for save my money.
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