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NorthwestBound's avatar
NorthwestBound
Explorer
Dec 06, 2016

Suburban sf-30 furnace noise after shutting down

After swapping out my converter because my old Magnetek converter wasnt outputting enough voltage for the furnace to get up to speed to trigger the sail switch, i've been hearing an electronic sound a...
NorthwestBound's avatar
NorthwestBound
Explorer
Dec 06, 2016
Old-Biscuit wrote:
Fan continues to run after flame is shut off to cool heat exchanger...can run 30-90 seconds

Is that the 'noise' you are hearing???


No, the fan has already come to a stop. Your not able to hear it until the fan is completely stopped.

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