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The 80,000 btuh requires a 3.00 PVC inlet and exhaust to work!!

I had the short run problem for two years. I read all about the 3 blink cures, the pressure switch, clear the air line etc. . I finally read the product specifications and found my problem. MOST...

I had the 3 blink problem on my GMNT080-4b. After fighting it for a couple of years and (according to the installer) having the goodman rep look at it, the problem turned out quite simple. At least...