Hi folks. I've got a problem with a Goodman GPG13 gas pack unit. When a call to heat is given all seems to work fine but the burners come on for a short time then some go off and come back on but after a while (a couple minutes) they all go off. And they stay off for the lock out time ~ I'm guessing an hour or so. I've checked the inlet gass pressure and it is within the right range (5" - 10" WC).

Interestingly, when it is not too cold outside it seems to work but when it is very cold outside, especially during the night, it fails miserably. :confused:

The flames from the burner look good (at least to my inexperience eyes ---they look a pretty blue).

Please help if you can and thanks in advance!

See here and here

I have the same problem, did you ever find a solution. My unit is also a Goodman GPG13 Packaged AC/Gas unit. It will work fine all day and when the temperature drops below 50F it starts blowing cold air. If I leave it alone it will start working again in the morning when the temperature goes above 50F.

NatGas or LP? Sounds like a problem with a regulator.