Have HVAC Questions? Ask an HVAC Expert for Answers
Please do not rate me until we have finished our dialog and you can rate me as "excellent" service. Thanks for the opportunity to help.
I'm sorry you are having trouble with your unit. Although it's rare for a compressor to go out after 5 years, this sounds a lot like the compressor. There are only two moving parts in a condensing unit and you've already replaced one of them (the condenser fan).
yes i have
You said the fan stops when this happens?
yeh, when the fan stops, it start sqealing
we shut it off
wait 10 mins, and turn it back on and it runs normal
OK, so the squealing doesn't start until the fan (the one you replaced) stops, correct?
them the fan stops and it starts squealing...
Now when you replaced it, did you get an OEM direct replacement fan motor?
i had someone get it for me. I couldn't get it myself. so i'm not really sure =(
OK, well that would be very important because if the horsepower was lower than the original, it could overheat
hmm...i'm assuming it is, cuz it feels hot around the unit
same thing happening before the fan replacement
i'm trying to get a hold of the person now that bought me the motor...to see if it's a direct OEM replacement
Yeah, that's what worries me. If you can look at the nameplate on the new fan motor, it should show the horsepower. Compare that with the nameplate rating on your Goodman unit where it shows fan "horsepower"
let's just say it's not a direct but has the same horsepower, would that cause any issues?
Let me ask you another question: when is the last time you thoroughly rinsed out the coils on your outside condensing unit?
oh man, never
the coil is the outside where the air pulls in
You should do that. Take a garden hose, put on a spray attachment. Set it to a stream and starting at the top, work back and forth on the coils on all sides from top to bottom
Rinse off any dirt, debris, etc.
If the fan can't pull air through the coils, it will overheat regardless of the horsepower
i know i did it a bit early, but not thoroughly
so when it overheats, the fan shuts down?
Yes, do all sides
and when the fan shuts down the compressor heats up?
causing squealing maybe?
Compressors can make strange noises if there is no fan to cool
that's where the sound is coming from, below the fan (compressor area)
I didn't realize this happened AFTER the fan stopped. That changes things
did you see the youtube video i linked ya?
yeh, it happens after the fan stops
I did, yes
it the exact sound
Is that your unit?
no, i just googled it and it popped up
i'm not home right now, i'm at work. lol
so i can't go clean it until i get home which is around 10:30pm (central)
now with a fully cleaned sides and it still occurs?
OK, well I would start with the coils. Then if fan still stops, check the horsepower and wiring and so forth. Make sure it's the correct one for the unit.
if all is correct?
oem direct/hp same
If it is, check for voltage to the fan and see if it has voltage when it stops. If it does, I hate to say it but it may be bad already.
wiring is perfect
i'm afraid so
This can happen with generic fan motors or motors that are not the correct one.
I'd also replace the fan run capacitor
If the coils are extremely dirty, this could cause a new fan motor to overheat and (ultimately) go out.