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Condenser fan motor replacement

Asked Feb 3, 2007, 09:06 AM — 2 Answers
I have a Rheem heat pump and have purchased a replacement condenser fan motor. It had an Emerson KA55HXPAM-7255 and was crossed over to an A O Smith ORM 1008. My problem is the wiring, the new motor has one more wire than the old one. I had orange, brown, black on the old one. The new one has Brown, Brown w/ white stripe, black, and yellow. According to cross references this motor is a replacement, but I'm not sure what to do with the extra wire.
There is also a slight hp and amperage difference. HP went from 1/10 to new one with 1/6 and the amp went from .75 to 1.1. Will this be a problem?

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fieldrh's Avatar
fieldrh Posts: 1, Reputation: 1
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#2

Sep 3, 2009, 09:15 AM
Quote:
Originally Posted by ride guy View Post
I have a Rheem heat pump and have purchased a replacement condenser fan motor. It had an Emerson KA55HXPAM-7255 and was crossed over to an A O Smith ORM 1008. My problem is the wiring, the new motor has one more wire than the old one. I had orange, brown, black on the old one. The new one has Brown, Brown w/ white stripe, black, and yellow. According to cross references this motor is a replacement, but I'm not sure what to do with the extra wire.
There is also a slight hp and amperage difference. HP went from 1/10 to new one with 1/6 and the amp went from .75 to 1.1. Will this be a problem?
Did you ever find an answer to this problem. I have the same problem.
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hvac1000's Avatar
hvac1000 Posts: 14,539, Reputation: 2381
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#3

Sep 3, 2009, 09:45 AM


Answer is simple. The two brown wires go to the fan motor capacitor and the other two wires go to each side of the 220/240 volt contactor. Lower left side diagram. Instead of white make it yellow since the diagram is generic.
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