a/c indoor blower motor struggles to turn on

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Old 06-29-14, 09:18 PM
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a/c indoor blower motor struggles to turn on

Hey guys,

Here is the problem. Sometimes, my A/C stops working. I tracked it down to the indoor blower (mounted in the attic). So, what happens is: thermostat kicks in, the outdoor compressor starts to work, but that indoor blower really struggles to start. It makes several attempts, the blower fan moves back and forth. I tried to help it by rotating the fan by hand, but this doesn't help (!) Eventually it starts, or doesn't. If it doesn't start it seems like it turns off the compressor (some safety mechanism is in place, I assume). I made a short video of the start process:

https://www.youtube.com/watch?v=1PL-42MUQZU

The fan rotates easily by hand w/o much efforts.

If my fan had an external capacitor I'd replace it first. But unfortunately, this motor doesn't have an external capacitor, seems like all the capacitors are inside of it. It is so called ECM motot. So, am I correct my motor is toast?
The A/C unit is Amana BBC60A2A. The cheapest motor for it I could find is $417.
 

Last edited by artyom17; 06-29-14 at 10:23 PM.
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Old 06-29-14, 09:57 PM
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Seems like, this is the type of the motor used in my blower:
https://www.youtube.com/watch?v=5Q5mm1Nqx9U
 
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Old 06-29-14, 10:23 PM
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Welcome to the forums.

Yes..... that is the type of motor you have in your unit.
Now to see about locating the end bell.
 
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Old 06-30-14, 04:41 AM
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Take a look at this thread for information on possibly repairing your ECM motor (actually the control module located at the back of the motor): http://www.doityourself.com/forum/ai...ble-motor.html
 
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Old 06-30-14, 05:49 AM
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It's probably the controller that's going bad, not the motor itself -> you might be able to just replace the controller. It has to be a direct match for your unit - you can't just go online and order a generic controller.
 
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Old 06-30-14, 11:25 AM
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Great topic about GE ECM repair! I agree, most likely, I need to replace the end bell of the motor only. However, I don't think my motor has failed thermistor issue, simply because once the motor starts it works fine. Most likely capacitors went bad.

It is very hard to find the end bell for my motor. I found it online in one place for $190. Whole motor is under 400 on searspartsdirect with 10% OFF coupon code and FREE shipping. I would love to fix the existing motor, however I don't have a lot of spare time for this and I can't take my time and leave my house w/o A/C for long time.... So, what I will do: I'll order the motor from searspartsdirect, once it is here, I remove the blower unit, remove the motor and inspect it. If it is fixable, I'll try to do it and then return the new motor. Otherwise, I'll use the new motor and keep the old one for parts.
 
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Old 06-30-14, 01:22 PM
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Actually I found the exact same issue another guy had (in that brilliant GE ECM topic):
http://www.doityourself.com/forum/ai...ml#post1741017
http://www.doityourself.com/forum/ai...ml#post1741251
But here it was just a bad connector.


And one more similar to mine case: http://www.doityourself.com/forum/ai...ml#post1755202
 
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