On the Goodman GMP100 furnace, the vent blower tries to run but stops immediately. The status light blinks 3 times. Is there a way to find out if the vent pressure switch is defective?
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On the Goodman GMP100 furnace, the vent blower tries to run but stops immediately. The status light blinks 3 times. Is there a way to find out if the vent pressure switch is defective?
Test the vent blower.
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