I have a goodman furnace mod. gms80903bna the glow bar comes on but goes out before the main gas come though just replaced the board?

Check gas pressure. If no gas, new valve doesn't help.

That blinking 3 times is indicating a pressure switch problem. Try checking for water or a blockage in any of the hoses going to the pressure switch or condensate drain. Check the air intake and exhaust pipe for any blockage including any saggs that may hold water. Make sure condensate drain or pump is working. If you get a glow from the igniter, there may be a blockage in the gas valve or piping.

Hi,

Here is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting

heatman101

check out the pressure switch........... i take it glows red gas valve clicks then goes off,

http://arnoldservice.com/Troubleshooting_Heating_Problems.htm

There is a chart with the wiring diagram and othere charts that will tell you what the 6 blinks are for. That should tell you what is wrong and what part you need. Sounds to me like the board has an issue or the gas valve is locked out.

bad board,i have had several board failures on goodman

Goodman gmp075-3 gas furnace and the flame cycles for 4 sec

OK, if the furnace is not lighting for even a few seconds, you have either a bad gas valve, bad wire, bad control module or no gas. The pressure switch is not the issue. Check all wires to the gas valve and look for 24 volts across them when the ignitor glows and you hear the click. Then test for 24 volts to ground. It could be a bad ground wire.

I have attached a link to download your owners manual troubleshooting guide. There is suggestions to follow coorisponding with the error codes.
http://www.dnmech.com/lit/IO-242.pdf