I have a Goodman forced air furnace that is about 13yrs old. I replaced the pressure switch a few yrs back and have had the blower replaced about a yr ago as well. I’m currently having trouble with getting heat. The furnace will run, but sometimes it doesn’t blow hot air. When that’s happening, it sounds like the burners are coming on and off. I replaced the thermostat already, but that didn’t work. Any ideas?

Answer

If the burners are kicking off and on almost immediately my first thought would be the flame sensor but beyond that, I cannot advise based on the info provided.

Updated on January 15, 2018

Original Article:

How to Figure Out What is Wrong With Your Furnace
By Dan Robbins

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