I've got a small white box-fan that used to work great, until I cleaned it. After that it worked for a few months and then slowed to a crawl, then stopped. When turned on, you can hear it buzzing, and if held at a certain angle the blades will slowly turn. If you push the blades enough it will start moving normally. (albeit with the annoying buzzing) If you turn the fan sideways it stops again. I opened the fan and took the entire assembly apart, and everything looks to be in one piece (although a nut was loose) The electric motor gets extremely hot when turned on. There seems to be a problem with the magnetic "catch" of the motor. The spindle part can be rotated freely by hand when the fan is off, but when I turn the motor on (and this is with the blades removed so it's not "over-weighted") it grabs the center magnetically and doesn't want to spin it. The center WILL slightly spin if pulled out from the surrounding electromagnet a little. Any ideas what's causing this or how to fix it without replacing? (with my minimal electrical knowledge)
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Whether its a central air unit or a wall unit, make sure the condensor is clean and air can flow thru it
make sure the condensor fan is running, the condensor fan keeps the compressor from over heating
if the condensor fan stops running the compressor will over heat and trip the circuit breaker. good luck!
Well, here is the deal: unless you rewired from two wire to multiple (usually 4 to 10 wires) wires, the fan cannot be controlled from the thermostat, even though the thermostat indicates that it can > it is a physical wiring and fan administration issue.
Unless you have a newer furnace, the fan is controlled by plenum temp. Works like this: burner turns on, no fan until the plenum temp reaches set temp,....then burner off, and fan keeps running until pelnum temp drops, and often the fan may kick on a few more times as this temp depletes.
Be sure the wires are hooked up, and it may not have gotten hot enough to turn on the fan in just a few minuets. Ride it close to home, up and down the street for a bit to see. Just do not go far until you know for sure.
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.
This sound like the windings in the motor are bad. If you are getting power to the motor in all speeds, motor is probably bad. There is a relay that is located behind the glove box. The glove box usually just snaps out by gently flexing in the sides. The relay is mounted on a bracket. Small, black, and square. Don't over look a bad switch either.
Try turning the power off at the fuse box, waiting 5 minutes turning the system back on and spray some water on the vents on the side of the outside condenser. If the fan isnt spining get a twig and spin it in an anti-clockwise direction after 1 or 2 spins it should start spinning on its own. continue to hose the vents with water for another 5 minutes. Its important to have the fan spinning as it extracts the heat from the condenser box.
The buzzing is possibly your exhaust/combustion blower. This blower is the fan sound you hear as the stove starts up. If you ARE hearing a NORMAL fan sound, then the buzzing could be the auger motor. Do you have a Foxfire with an igniter? This tells me the series of model you have and what control system it uses.