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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?
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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If you have a multimeter that tests "uf" or "mfd" that is microfarads. That will test the capacitor. Turn off power to unit, touch top of cap with insulated screwdriver across terminals to discharge and remove fan and common. MARK WHICH WIRES GO WHERE. Or if no mfds on multimeter, amps×2650÷volts=mfd. Amp draw on fan wire off of cap times 2650 divided by the volts between common and fan on the cap. If cap is good it's likely the motor.
If the fan is not running is the compressor not running also...if neither is running the possible reasons are 1..no power to outside unit...2..bad contactor on outside unit.is this buzzing if it is this indicates no power...3 bad capacitor,do both compressor and fan humm then quit humming and hum some more...4 high pressure switch has shut unit down because fan wasnt running if compressor was running but not fan....if your unit has this there will be a manual reset button where the lines come out of unit...if compressor was running and fan was not...1 bad fan...2 bad capacitor.. if you do not have any electrical knowhow i would recommend calling a hvac tech to come and fix unit...Thanks
There is a reset button on the outside of the unit near where the tubing and wiring comes into the unit. The button is encased with a red plastic cover. If the unit is making noise but the fan is not spinning, the problem may be related to the fan itself. First with the unit turned of, see if the fan spins freely. Then fire the unit up again to A/C and see if the fan is not moving. If not, carefully nudge the fan blade with screw drive in the direction it normally moves. if the fan engages, most likely the bushings are old and need to be replaced; RUUD may only sell the entire fan assembly.
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.
Shut the power off to the unit, spin the fan blade 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.
Shut the power off to the unit, spin the fan blade 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.
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.
sounds like starter on a/c is going out you need to replace it as it starts the fan and compressor as well good luck (thats assuming toutside means outside)
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