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Old 01-10-2011, 03:25 PM   #1
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Slight humming noise.


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

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Old 01-10-2011, 04:18 PM   #2
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Slight humming noise.


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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Old 01-10-2011, 06:20 PM   #3
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Slight humming noise.


Yuri:
Thank You very much.
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