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Goodman Draft Induction Fan Keeps Cycling On and Off

Here is my situation:

I have a Goodman (gulp) gaspack Model PGB042125-1 that is approximately 8 years old. In the past we have had to repair the the other regular issues (cracked heat exchanger, multiple bad igniters, burned compressor contacts, etc -- Thanks Goodman!), but I've got a new one and money is tight. The draft induction fan keeps cycling on and off -- regardless of whether the thermostat is calling for heat or not. The gas never turn on during the cycling and the igniter never glows, the induction fan just keeps cycling on and off and has been doing so for weeks. When the thermostat calls for heat, the unit works just fine. Is this a problem with the board that I keep reading about? I'm pretty handy with a volt meter but I have no clue where to start to diagnose the problem and I can't afford to either start replacing parts or pay for a house call to a professional to run the diagnostics. I've searched through the threads and cannot find an example of my problem. Please help me.

Thanks,

Walt

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Can you write down where the low voltage t stat wire go and disconnect the white wire at the unit to eliminate a short between the white wire and the red wire usually the colors are as follows red is 24volt , green is fan , white is heat, yellow is cooling I want to narrow down the red is not shorting to the white briefly let me know if this is possible if not we can try other checks

Posted on Jan 06, 2009

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