Fan won't quit

[BADCUDA]

My Goodman gas hot air furnace is a piece of junk. Every year, it's something else. This year the main fan won't stop running. No matter what the thermostat is set for, it just keeps on going. It's a good thing it is warm around here now, but cooling season is getting close. What sensor or probe should I be looking for ?? Any suggestions would be appreciated. Thanks

[HayZee518]

Take a look at this link.

http://arnoldservice.com/Troubleshooting_Heating_Problems.htm

[BADCUDA]

Thanks for the link HayZee. I actually read the instructions on the door and my board was blinking 4 times, open limit switch. I bypassed the high limit switch and the furnace fired up in the right order. This switch has let me down for the 3rd time now. It's a good thing its cooling season. That worked great. Thanks.