Question about Goodman GMS90703BXA Heater

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Replaced Fuse on Board. Unit keeps running

I replaced the fuse in my board. The unit fired right up, but when it reached the pre set temp. on the thermosat it would not shut off. It sounded like it wanted to,but would start right up blowing warm..not hot hair. Any info is greatly appreciated. Thank You

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Sounds like crossed or shorted wire going to the thermostat. Disconnect the wire from the thermostat and see if it shuts off. If it does, it is the thermostat. Then disconnect either the white wire or red wire at the control board and see if the furnace shuts off. If it does, its the wiring. If it continues on, it is the control board. Remember you will need to tape the access panel door switch to the on position to be able to run the furnace with the panel off.

Posted on Nov 25, 2008

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Sincerely,
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A/C, Heating, & Refrigeration Contractor

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