Need a/c blower motor electrical help!

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Old 12-05-10, 03:12 PM
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Need a/c blower motor electrical help!

so I decided to replace my blower motor. I went to ac supply
and bought a motor. I took the old one to match.
I hooked up the yellow and blue wire just like the old
motor. I hooked up capacitor and thought this was easy.
Flipped the breaker and the fan took off like a jet
plane. The motor specs appear to be the same.

After a poof from the motor I shut it down.
I am now wondering
where to go from here? Any advice is appreciated

here is the original motor info
ge 5kcp39pg S084 s
the motor the store sold me is a
ao smith Fd6001

I think the original is a 3 speed and the replacement is a 4 speed?
 

Last edited by Hfd1375; 12-05-10 at 05:56 PM. Reason: update info
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Old 12-05-10, 07:12 PM
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Is this an air handler with electric heat?
I see that the new motor is 230 volt 3 speed 3/4 hp.
I can't bring up that exact GE motor.

A 4 speed motor usually uses white for common and yellow is a speed.
A 3 speed motor will somtimes use yellow for common. (this appearance may be due to age)

Connecting yellow to common instead of white can smoke a motor.
You might double check the wiring.
 
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Old 12-05-10, 07:23 PM
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Thanks for the help

This a air handler with heat. the new motor is a 4 speed which I found out later. The original GE says it is a 3 speed. The original had the yellow and blue hooked up. I didnt pay attention so Im sure it is fried. the ao smith site has a fd1076 which is what I think I need?

The link below will lead you to the models we are talking about. If I buy the 3 speed can I assume that yellow is to be used? I will try to post the GE info
the ge motor has a yellow, red, blue, black and 2 cap brown leads. it says 1100 rpm 3sp on the side. I assume this is a 3 speed.

A.O.Smith Electrical Products Company
 

Last edited by Hfd1375; 12-05-10 at 07:40 PM.
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Old 12-05-10, 08:11 PM
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Houston I checked the ao smith site and you are correct. The three speed motor does use yellow for common and blue. The 4 speed uses white. So I guess the motor is fried. Could any other components be affected from hooking the yellow?
 
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Old 12-07-10, 04:50 PM
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It is possible that the fan relay on your circuit board was damaged.
You can remove power and visually inspect both sides of the circuit board.
I'd start with a new motor and cap.
 
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