My fan just quit working. The unit is getting power and the outside grill still spins, but the fan itself does not spin. I opened the motor and did not see anything burned up or smell any kind of burning electrical smell. It still revolves very smoothly when you manually turn the fan. To me it seems like the motor might still be good, but that it is just not getting power for some reason. There was a sticker on the motor that says "over-heat protection". I looked for some kind of fuse, but could not find one. Do you have any recomendations of how to fix it, or where I could possibly find replacement parts?
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Re: Fan won't spin
The thermal fuse is usually mounted inside the motor or mounted on the outside of the motor. The Thermal fuse is usually wrapped up so it is kind of hard to spot right away. If you have a ohm meter or a voltage meter, you can check continuity of the wire to find out where the continuity is broken.
You should be able to ohm out the motor. If the motor doesn't ohm out good, then you then can assume that the thermal fuse is located inside the motor. If you open the motor up, Keep in mind that the thermal fuse would be closest to the casing.
Good luck, I hope you can get it working or at least figure out what went bad. If you have any questions, please feel free to post again and please remember to post a rating.
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Any tower fan is something of a pain to dis-assemble. Lots of screws and tricky plastic parts that snap together in various ways. So I don't take anyting apart on the fan itself. I use an air compressor with a blower nozzle to get the job done. As you blow the fine stream of air over the vents and into various areas at the top and bottom, watch out for dust blowback. As you blow into the center vents/grille, the fan blade will spin around, too. After you've blown out the dust, use a damp rag, along with an old paint brush to clean out the grooves in the vents and grille.
if its sat for any length of time the lube on the shaft can harden. remove the grill and spin the blade to see if it rotates freely. using care to stay away from the blades set it to the highest setting and give the blades a little assist to see if it will begin to spin, if it does,, use some WD-40 or Trilube on the shaft of the motor front and backside
Good Luck Dave. please take a moment to rate my reply
(note) larger fans require more juice to get them going,, so yes , if the cap is flawed and not totally burned out,, ( they are called starting capacitors) then they are not supplying enough amps to get the job done,, which in turn would allow the motor to Hum, but repeated trying will burn out the cap
It might take some work, but you should be able to get at the exhaust vent by removing the grill, light fixture and fan. Might be best to try and find where it is vented to, hopefully an outside area.
If you can, there are some small over the counter type of things you can use to try and clean the vent. One is a window brush that is on a long pole, found in the window cleaning area of the Home Depot. This is a soft brush that will not damage (famous last words) the exhaust vent.
There is also a flapper door of sorts that closes at the fan when the fan is not running. Might be that the flapper is stuck in the closed position.
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.
clean your fan motor. remove carefully part by part(your fan motor, the coil and the rod). remove all the dirt. put machine oil at the rod, front and the back part. try to spin it. oil it and spin, do it again and again until the rod spin smoothly. and then put back those part as before you 'open' the fan. but remember, do not do this while your fan plug is still plugged to the power source. or you will be dead instantly. for your safety, you know. so be careful. last step, try it! :) i hope this will help you in fixing the fan.
I don't understand what you mean by "uneven spacing between the blade housing and the motor housing." If physical spacing is the cause, then you should be able to fix it by tweaking the blade housing into a new position or re-mounting it by drilling new mounting holes of your own and using sheet metal screws to secure it.
The fan inside might just be unbalanced though. Try tightening the
large brown peg on the back of the fan head, and try tightening any
other small screws that you see holding the fan head or cage in place. Heck, maybe even loosen everything, reposition it a little, then re-tighten.
Balancing the individual fan blades would be tricky because they spin
at such a high RPM, but it could be done by using a strong epoxy to
stick the correct amount of weight on the blades that need it.
Figuring how much weight to put on which blades would be the hard part.