Question about Heating & Cooling
I have a Goodman GMP125-5 furnace that just quit working a few days ago. The furnace is laying horizontal up in the attic crawl space. I can hear it trying to start but after a while it shuts back off. Thinking it was the igniter I took the doors off and tested it with a meter. I got 35 ohms on it and then tried to restart and got three blinks on the error code led. This indicates a bad pressure switch I believe. I have ordered a new one but in the mean time tried drawing or blowing air through the air hose and could only get a very little air to move with a lot of pressure. Is there something else I should be looking at to confirm if something else might be bad in addition to or instead of the switch?
Try to bypass the connection of the pressure switch to confirm if the pressure switch is really bad, and reset the unit. Monitor your pressure to be sure that its normal and not the cause of tripping your pressure switch.
Posted on Mar 18, 2008
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Posted on Jan 02, 2017
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