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Old 01-19-2011, 07:37 PM   #1
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Replacing older lennox blower motor


I have a older Lennox cbh19-41-1p Air handler. The blower motor went out. The motor was a GE motor with two capacitor wires, a red wire capped off, a yellow and a black wire attached to the relay, and an orange wire that was wire nutted to the orange transformer lead and a red wire that goes to something mounted on the heat strips with a resistor. The supply house gave me an ao smith orm 1038 that only has a red, black, orange, and brown lead. The orange and brown go to the capacitor, right? I'm missing something... It's a 208/230, 825 rpm motor the black is high speed, the red is low speed... Do I need a different relay or what? How can I make this motor work? Need some heat!


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Old 01-20-2011, 07:05 AM   #2
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Replacing older lennox blower motor


The unit has a single relay, white Rogers type rbm. Am I right in thinking that since there are only four wires, one leg feeding the cap should come from the two wires in the air handler that previously were connected to the orange lead on the old motor. Otherwise, the cap isn't getting energized, right? Thanks for any help.
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Old 01-20-2011, 07:18 AM   #3
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Replacing older lennox blower motor


Maybe useful data here?
http://www.cozyparts.com/lennox-part...=2&startpage=3
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Old 01-20-2011, 07:49 AM   #4
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Replacing older lennox blower motor


Spoke with ao smith and they at least confirmed part of what I thought.... The orange lead at the capacitor also needs a leg coming from the air handler to power the cap. What I'm trying to figure out is if the orange lead on the old motor was what was powering the cap before since the cap only had two attached to it.
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Old 01-20-2011, 06:21 PM   #5
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Replacing older lennox blower motor


Orange on the old motor was one leg of the 240. The yellow or black supplied the other leg, depending on which speed was needed. The capacitor was powered with the same leg as the orange wire inside the motor.

So new capacitor gets the old orange and the new orange on one side of the capacitor and the brown on the other side. Black goes where the old black went and red goes where the old yellow went.
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