I have a kenmore heater/air
Hi, if it just hums and you have no air flow at all, it would be a problem with the dual shaft motor or the run capacitor that start and runs this motor. More then likely it is a 220 volt unit that will require a run/start cap. It will be located in the electrical section which is very hard to excess as you would need to go through the front by any control knobs.They come in different shapes and sizes, most look like a small coke can, silver with 2- terminals or 3 coming out of the top. Some are gray plastic. When the start to leak oil or are blown open or swollen, they are faulty. This happens due to internal problems with this motor. Could be the motor is just stuck and you could get lucky by going to the outside of this unit, shutting off power and using something long and slender enough to reach in and try to turn this motor to break it free. Not knowing the age of the unit, calling out a repairman would cost you more then it would cost to replace this unit, this I know. But, try what I have said to see if you can break it free. If it spins but just hums, you have lost this motor and will need to replace it. Like I said, replace the unit as it would be much more cost effective. Please keep me posted on what happens when you check the motor. If you can't spin it, the bearings are froze up and the motor is dead. Please rate me on my help to you, and I regret giving anyone news like this, but I want to be honest as far as replacing it. I know how costly this can get, and you can get taken for a ride by calling out a service tech as most times they will remove the unit to bench it at the shop. Time builds very fast...$$$$$!! Please keep me posted.
Shastalaker7
A/C, & Heating Contractor