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Re: cooling fan not turning
You need to replace it.
Which cooling fan? There are sometimes several and the hardest one to replace is in the power supply. If you are handy with tools and don't mind the work, you can replace it yourself, otherwise you will have to get someone to do it for you.
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There is a cooling fan for upper and lower oven they run at the same time no matter which oven in use it is fed from the oven manager no way to trouble shoot without pulling oven out some models use same fan for both so you could have a blower on hand remove back panels to access fans take a lead off fan to determine which one noisey
Sounds like your blower motor may have either ceased, or gotten an obstruction. Sometimes an animal will crawl into your heating unit and make a nest or other things get in there and bind up the hamster wheel (fan). Start by checking for power at the fan using a test light with a wire probe end. If you have power at the fan with the switch on but it's not spinning, first check for an obstruction, if no obstruction, check to make sure the ground is good from the motor (make your own ground with the test light by probing the ground) if the motor spins up, fix the ground wire, if not, time for a new blower motor unfortunately.
It is possible that the actual fins have separated from the hub. Hold the shaft of the motor (as to stop it from spinning) and the try to spin the fins. You then may notice the welds are broken. Could just be a bad motor, could be just the wheel. Good Luck!!
Are you cooling or heating? In the cooling mode the fan should run with the compressor. Shutdown, open up control section of unit, check Capacitor. Try to turn fan blades by hand. Does it spin freely? Do not touch capacitor terminals until you discharge it by shorting terminals to ground. If the capacitor looks swollen then it is bad.
you can remove the top panel by removing the 5/16 screws his will gain access to motor turn the power off to the unit and check if the motor is hot. if it is let it cool and retest if the motor makes a loud humming noise and does not turn try to manually spin it if it starts up you have a bad capacitor if it wont turn it is seized and the motor will need to be replaced . If it cold and makes no noise you may have a bad blower relay, you will need a volt meter to test. that motor is 240voltmotor
Is the fan running and stopping before the unit completely quits?
If the fan quits the compressor won't run very long.
I would start with the fan motor or capacitor.
Shut the power off to the unit, spin the blower wheel to see if it spins freely. If it doesn't spin freely, (there appears to be a little drag when you spin it),the bearings are bad, if it does spin freely, then try moving the motor shaft from side to side if there’s any play in the shaft side to side then the bearings are worn and motor needs replaced. Then, check the capacitor, if it’s bulging even slightly, the capacitor is bad and needs replaced. Most of the time people replace the capacitor if motor seems ok. If capacitor is ok, turn power on to see if the motor is getting the proper voltage, if it is and not trying to run, then the windings are probably open, the motor's bad and needs replaced. r.
If blower not working, and yoou hear a slight "Hum" with fan only on, try this. With power off to AC. Go up on roof, and slide a stick through opening on side near rear, and try to get to fan blades at rear of unit. try to spin the blades a few times, even if it only goes a little at a time. Unless you want to take all those screws out & remove cover to get at it better, but watch for wasps under there. Give fan a couple of full rotations, then have someone turn it on to fan only & see what happens. If fan finally works, let it run for a few minutes on fan, then try cool & see if it all comes together again. Let me know.
the motor could just be locked in place from sitting...take a stick or something and try to see if it spins be sure of rotation! you can also give it a little nudge while it is on and it will take off! if this happens then you have a bad start compacitor but no there are no fuses that only protect the motor!