Question about Goodman GMS90703BXA Heater

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Glow light blinks once

The owners manual says to replace the circuit board. Our technician tried one and thought it was no good as it would not start at all. he got another board and that did not work either. On calling the company they said that this furnace was made for California. We live in Wisconsin. So there must have been a big change in the circuit board because my furnace will not start with the new one. My Goodman Furnace GMS8 single stage will not keep running. Sometimes it runs for several hours before it starts the one blinking (meaning something is wrong) I need help.

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  • mike May 11, 2010

    well there are a few options here first off the board is sensitive to poliarity, if it is reversed sometimes the board will blink an error code and not operate properly but before we get into that i have a few questions. can you get the furnace to operate at all? when you turn the power on to it what dose it do ?

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One thing to try is to check the voltage coming to the furnace to see if it is correct. They do have separate furnaces for California because of the NOX compliable laws but the boards according to my vendor are all the same. Look on the new board to see if you see any of these numbers # PCBBF112S or 01030F00005S. If you do have one of these numbers it is the correct board. If not change the board or if voltage is wrong get that corrected and you should be fine

Posted on Feb 13, 2009

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