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HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 14007
Experience:  15yrs in the HVAC industry with certificates and degrees.
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Here, goodman furnace fan runs continuous
, Gas furnace

Customer Question

Customer: Hey, gary here, goodman furnace fan runs continuous
JA: Thanks. Can you give me any more details about your issue?
Customer: Gas furnace only, installed new control board last year after rodents chewed and shorted tstat wires which I assume shorted control board out, but worked great all last winter. Just turned on today, and blower fan runs continuous whether in auto or on position. took loose tstat wire at furnace and not shorted, even took them loose from control board and fan runs without them hooked up
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Submitted: 1 year ago.
Category: HVAC
Expert:  HVAC Guru replied 1 year ago.

Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond as typing, researching and adding links takes me time to do so please be patient and often I will ask you questions to narrow down the issue to get is diagnosed correctly.

Gary does the fan run non stop even with the unit off?

Customer: replied 1 year ago.
runs non stop when the tstat says system off, I can disconnect the low voltage wires off the control board and the fan continues to run.
Expert:  HVAC Guru replied 1 year ago.

OK you may just have a high limit rollout thermostat open on the unit. Check all the rollout thermostats around the burner housing for continuity and some may have a push reset button on them. If any are open the fan will run as it detected an overheat condition. See what you find and let me know.

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