The rotor is stuck and the fan blade will not rotate then a humming noise can be heard. It is due to a bushing problem. It may be stuck due to a hardened accumulated dirt.
Remove the fan blade guard.
Remove the fan blade.
Remove the 4 screws holding the stator assembly.
Pull out the front plate of the motor and the rotor.
Answers & Comments
The rotor is stuck and the fan blade will not rotate then a humming noise can be heard. It is due to a bushing problem. It may be stuck due to a hardened accumulated dirt.
- Remove the fan blade guard.
- Remove the fan blade.
- Remove the 4 screws holding the stator assembly.
- Pull out the front plate of the motor and the rotor.
- Clean the bushing and the rotor.
- Lubricate the busing and rotor assembly.
- Reassemble in reverse order.