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Problem for Goodman GMS90703BXA Heater
I have an old godman furnace GPM050-3 nedd to
Solution #1
posted on Nov 12, 2009
Look on the new board and the old boards to compare the markings where the wires a hooked at. For example "L1" on the old board would go to "L1" on the new board. All the wires on the old board sould have a counterpart on the new baord. Just switch them one by one so you don't get confused.
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