Question about Goodman Heating & Cooling
This from the installation manual on your furnace.
I think you need check the flame senor for proper output. if the output is correct you wil have to switch the electronic board.
FLAME SENSOR (QUALIFIED SERVICER ONLY)
Under some conditions, the fuel or air supply can create a nearly
invisible coating on the flame sensor. This coating acts as an
insulator causing a drop in the flame sense signal. If the flame
sense signal drops too low the furnace will not sense flame and
will lock out. The flame sensor should be carefully cleaned by a
qualified servicer using emery cloth or steel wool. Following cleaning,
the flame sense signal should be 1 to 6 microamps at 115
Post me back and let me know.
Posted on Dec 01, 2008
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Posted on Jan 02, 2017
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