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Old 08-28-2013, 09:27 AM   #1
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Carrier V A/C Blower Motor

I have a carrier V A/C on my Keystone Outback. Recently the A/C started acting up, sometimes it wil turn on, sometimes it won't, and then there are times where it strains to turn on but when I go on top and turn the fan over it starts up. It will usually run for about an hour, and it cools great, and then then I hear the motor starting to strain and it will slowly come to a halt and I get a humming noise, that's when I shut the unit off immidiately. After about an hour or so, it will usually start back up. Has anyone had this issue? would this issue be with the motor or the capacitor? Would installing a hard start kit alliviate this? Or would it be best to just replace the motor? I am going to have both the motor and capacitor tested this afternoon. I know carrier is no longer in the RV buisness, does anyone out there know of a replacement motor that would work. I really dont want to have to replace the whole A/C unit right now, so I am hoping I can get by with something less costly.

Thanks
Bernie Ramirez
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Old 08-28-2013, 03:40 PM   #2
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Do a search on IRV2 for carrier. Read several things about them in past. there is a motor available that will fix and this is where I read about it. Rather than go to a RV dealer try calling a local AC dealer and see if they are willing / able and knowledgable about air systems in mobil units. you can always remove the motor and take it to a industrial motor shop and have them fix it. point is it is repairable, but most RV dealers just want to replace units... just saw a dealer here in FL replace 3 units (all worked fine) just because he claimed they were NOT serviceable. good luck.. safe travels ed
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Old 08-28-2013, 04:01 PM   #3
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You are describing the symptoms of a failed start capacitor.

However it can also be a bad motor.

Carrier is no longer in the RV business.. So parts need to be found elsewhere... As It happens I have a spare blower motor and start capacitor but odds of you being parked close enough to me are slim (St. Clair, MI this week, Davison, MI. next week) if it is the capacitor however,,, That is easily replaced.. You may, however, need to buy two since Carrier uses a "Dual" unit (Two capicators in the same can) one for the compressor as I recall.. I might be wrong on that.
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Old 08-29-2013, 09:16 AM   #4
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Originally Posted by EDALLSAILS View Post
Do a search on IRV2 for carrier. Read several things about them in past. there is a motor available that will fix and this is where I read about it. Rather than go to a RV dealer try calling a local AC dealer and see if they are willing / able and knowledgable about air systems in mobil units. you can always remove the motor and take it to a industrial motor shop and have them fix it. point is it is repairable, but most RV dealers just want to replace units... just saw a dealer here in FL replace 3 units (all worked fine) just because he claimed they were NOT serviceable. good luck.. safe travels ed
Thanks for your advice. I took the motor and capacitor off. The motor seems to have tested fine, however the capacitor didn't. I'll be going to my local HVAC shop and getting a capacitor today. I'm hoping that it's just going to be the capacitor.

Thanks again!
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Old 08-29-2013, 09:19 AM   #5
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Originally Posted by wa8yxm View Post
You are describing the symptoms of a failed start capacitor.

However it can also be a bad motor.

Carrier is no longer in the RV business.. So parts need to be found elsewhere... As It happens I have a spare blower motor and start capacitor but odds of you being parked close enough to me are slim (St. Clair, MI this week, Davison, MI. next week) if it is the capacitor however,,, That is easily replaced.. You may, however, need to buy two since Carrier uses a "Dual" unit (Two capicators in the same can) one for the compressor as I recall.. I might be wrong on that.
Thanks for your advice. I took the motor and capacitor off. The motor seems to have tested fine, however the capacitor didn't. I'll be going to my local HVAC shop and getting a capacitor today. I'm hoping that it's just going to be the capacitor. No I'm not parked anywhere close to where you are at, I'm all the way over here in west Texas. I appreciate it though.

Thanks again!
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Old 08-29-2013, 09:34 AM   #6
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I think we have a capacitor that would fit it. Anyone will have the right ratings probably but the size is an issue.
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Old 08-29-2013, 09:49 AM   #7
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Fan start capacitors are not tolerant to a voltage surge , you may think about getting a cap with a little more uF starting capacity if your motor is an older one.

Good luck,

James
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