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Tony Hwang Tony Hwang is offline
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Default New Furnace Electrical Noise Problem

wrote:
Using the battery operated portable am radio is the best that you can do without sophisticated equipment. See if the noise appears to be radiated into the house, or is it being conducted onto the power lines at the furnace and then carried by the power lines throughout the house.

I think there is kit available from the manufacturer to deal
with the noise problem. DC VS motor servo circuit board is
source of noise most likely.