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chuck2009 10-01-2009 07:13 PM

Goodman gas furnace getting 3 flashes, stuck pressure switch
I have a goodman gas furnace and I am getting 3 flashes telling me that my pressure switch is stuck open. how do I fix this?:wink:

SKIP4661 10-01-2009 08:00 PM

If you have a model and serial number it may help. Check for water in the pressure switch tube.

chuck2009 10-01-2009 08:42 PM

goodman furnace preasure switch
my furnace is not turning on, the light is flashing 3 times indicating a stuck open preasure switch. i do not have the # on it. does anybody have any suggestions on how to solve this probelm?

GetYourShineBox 10-02-2009 02:09 AM

check for blocked vent pipes(flue pipe leading up from the furnace could be clogged),clogged hoses(check the hose from the inducer to the pressure switch and make sure it doesnt have a hole in it or a crack) and check the inducer to see if its bad. if the pressure switch isnt closing that means the inducer isnt pulling a vacuum. if you have a multimeter check for 120v from black to ground and white to ground.

mortan 11-02-2010 11:42 PM

I have a Goodman model GMNT 080 4B. The furnace start like normal but when the temperature reaches about 64 degrees I receive an error light. The fan continues to run but the burners do not. I have already tried cleaning the flame sensor but the problem continued. Tell me is anyone have any solution..?

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