Slight humming noise.

wjconrad

Have a Coleman forced air furnace in a 1985 mobile home. The blower motor died, I replaced it with a new one that required a starter capacitor. It heats up, cycles, cools down and shuts off...While it's off there is a barely audible slight humming noise coming from somewhere below the blower motor.
I wouldn't think there should be any humming? What could the problem be?

Thanks,
Bill

yuri

Control transformer that changes the power from 240 volts to 24 volts for the thermostat to use. They hum and that is normal. Just never noticed it B4.

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wjconrad

Yuri:
Thank You very much.