A/C blower (indoor) not working

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  #1  
Old 06-20-19, 10:46 AM
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A/C blower (indoor) not working

I noticed last evening that there was no air blown out of the AC. The compressor fan out of the house is still working. I did some research, and tried the easier attempt to fix it, replacing the blower capacitor. After the replacement, when turning the AC on, I can hear some noise from the blower, but the blower is still not running, and the humming noise disappeared a minute later. I manually rotated the blower, and it rotates smoothly. What else should I check?

Thank you very much!
 
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Old 06-20-19, 11:03 AM
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The humming sounds like it was the motor trying to start. After a minute it cut out on thermal overload.... high heat. Sounds like it's time for a new motor.
 
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Old 06-20-19, 11:10 AM
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Thanks. I did check the motor, but didn't really find it's hot. It is actually pretty cool.
 
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Old 06-20-19, 11:27 AM
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Did you try using a stick to turn the blower wheel ?
You'll have to hold the blower door safety switch.

What happens is the bearing nearest the blower wheel wears on the bottom from the weight of the wheel. The motor will spin fine off. As soon as power is turned on.... the motor will growl or seze and you can't turn it.
 
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Old 06-20-19, 11:29 AM
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Yes, I can try that. If it can be started this way, what might be the problem then?
 
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Old 06-20-19, 01:04 PM
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It would still be a bad motor but you would confirm everything else is ok.
 
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Old 06-20-19, 04:14 PM
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I really appreciate your instruction. I tried to place the fan to on, and poked the fan using a stick. It was started with some noise. I think that is the bearing problem you mentioned. Is there anyway I can repair it, like putting some oil? This is an old AC. It may not be worth it to have a new motor on it. I will be shopping for a new AC system.

Thanks.
 
  #8  
Old 06-21-19, 04:53 AM
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Hi, motors are not that expensive and if you are mechanically inclined not that hard to change.
Geo
 
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Old 06-21-19, 07:38 AM
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Thanks. Just got the old one out, and bought a new one.
 
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Old 06-21-19, 08:39 AM
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Great! Make sure you have the correct capacitor for the new motor.
Geo
 
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