help me 95 degress no ac were dien here


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Old 07-18-08, 06:25 PM
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Angry help me 95 degress no ac were dien here

this year we had problems with our outside ac unit its a 1993 york.. our fan motor the one thats on top of ac unit kept locking up making a loud humming noise so we thaught needed new fan motor went and got one. worked a week then did it again then we got a new compacitor to match the fan motor . worked for a month then did the same problem the shaft berrings are good the top of fan when it hums is HOT!! the compressor and everything works jus the fan motor is messed up sounds like its trying 2 reverse polarity. or something. its really hot here in florida and we cant take it nemore.. please help us we out of ideas
 
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Old 07-19-08, 05:35 AM
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It is quite possible that the motor you purchased to replace the original one was not a correct replacement. Furthermore, when you buy a new motor, it comes (the new motor) with its own capacitor, so the old one should not have been used (as it appears this was the case here). Finally, it is normal for motors to get hot, but how hot is too hot is hard to ascertain without actually being by the unit...at any rate, if indeed there's some serious motor overheating here, there is as well the possibility of a miswiring. Is the rotation of the new motor the same as the old one? Did you replace the fan blade as well? if not, were you careful to re-install it properly? if you inadvertently reversed the blade's position, there's likely the reason for your troubles.

You should not have your A.C. running until this matter is taken care of since a fan motor failure will quickly compromise the compressor (likely killing it, actually) and then you'll have a very expensive situation.

How about you gathering and posting the nameplate info for your condensing unit (Model number really, since you already say it is a York). Nameplate info of the replacement motor currently in place can be helpful too.
York is not too good at making literature available online but who knows, maybe one of us can get it for your unit. But if not, take and post some good pics of the condensing unit (especially pics showing the wiring and electrical components)
 
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Old 07-19-08, 06:45 AM
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the motor was a correct one we got it from a ac guy we brought old one in and capacitor is good 2 even tried putting old on back in it new fan motor and did same thing. and fan blade is fine as well. it only got hot when is was humming and stuck we tried 2 spin it 2 make it start goin that worked a few times now its not working when ac is off the fan spins freely. what else could it be besides the copacitor and fan motor and blade.
 
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Old 07-19-08, 11:59 AM
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Originally Posted by pflor View Post
Is the rotation of the new motor the same as the old one? Did you replace the fan blade as well? if not, were you careful to re-install it properly? if you inadvertently reversed the blade's position, there's likely the reason for your troubles.
It be nice to get the answers regarding these questions.

Also, I know someone who had to buy 3 alternators for their car, once, to get one that was a good one. Lots of overseas stuff today and I'm not sure what quality control there is, out there, like there used to be.

You could take that new motor out and have both the new one and old one bench tested at a motor shop, also.
 
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Old 07-19-08, 05:22 PM
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Originally Posted by mfmoto8 View Post
the motor was a correct one we got it from a ac guy we brought old one in and capacitor is good 2 even tried putting old on back in it new fan motor and did same thing. and fan blade is fine as well. it only got hot when is was humming and stuck we tried 2 spin it 2 make it start goin that worked a few times now its not working when ac is off the fan spins freely. what else could it be besides the copacitor and fan motor and blade.
Since you indicate being sure regarding the motor being the correct one, the blade having been installed properly and the capacitor also being good, the only reason left for the humming and lack of spinning is an electrical miswiring. But there's no way to be able to help you out here unless you post the M/N and pictures.
 
 

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