How do you check the door switch on a goodman furnace? I've already replaced the mother board, the transformer, and the 10 mfd 370 oval
Resistor.
T-Top
Oct 27, 2007, 05:11 PM
Tape or hold the door switch closed. You only have two wires on the switch. If you have 115v and above on one side of the switch and the same on the other side its good.