Question about Goodman GMS80904BNA Open Flame Mid-Size Heater

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Gms80904bna i have a furnace that has 120 volts to board and transformer. 24 volts to the r terminal on board but i have no 120 volts to the inducer motor. i have tested at the motor and the board but no voltage. is my circuit board bad or am i missing something?

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Since you have 24VAC, put a jumper between “R” and “W”, you should hear a relay click from the control board, this is for the inducer motor, if you don’t have 120VAC at the board, you have a faulty control board, it’s the same scenario if you do NOT hear a click.

Hope this helps

Posted on Dec 03, 2008


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1 Answer

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Oct 29, 2008 | Heating & Cooling

1 Answer

A carrier furnace

check the relay
the primary should have a low resistance
there should be a distinct click when 24 volts is applied to the primary
the secondary should be conductive when the primary is energized (contactors can corrode)
not a solution something to check

Oct 02, 2008 | Heating & Cooling

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