York HVAC Blower
Your furnas blower plugs into a control module. My blower has three speeds, refer to the schmatic on the panel cover. White wire is the neutral and a black, blue, & red wire for each speed. I took an extention cord and installed spade connectors to allow external power to the fan. This will allow the motor to be tested outside of the panel/furnas controls. This would allow you to verifty the motor will run. There is a capacitor to start the motor which also has spade connectors for easy replacement of the $20 capacitor. I have just completed a repair to my blower motor. The motor would humm when power was applied. The fan could be turned, but the motor would not come up to speed. Turns out the bearing lubrication became a glue and the motor could not spin freely. The GE motor bearings are sealed, no design for additional bearing lube/grease. Since a replacement motor was $200 and was not a direct replacement, I disassembed the motor. I found the bearings are just sleeve bearings. The lubrication had been lost due to being 13 years old and the oil was stored in a fabric/cotton material. I packed the area with grease. But a synthetic motor oil could have been dripped into the fabric to restore lubrication. You can test the fan circuit at the furnas motor spade connectors. Remember, white/neutral is the return for power for all three speeds. So power/voltage can be checked at the spade connectors for each speed. Yorke & Lenox have exclusive rights to the General Electric motor. You may not be able to purchase a exact replacement if you are not an approved contractor. I called six supply houses and checked the internet with no one having a replacement motor available.