My Goodman gas furnace comes on and heats to about 145 degrees at high limit switch after running 5-10 minutes and then cuts the flame off and on every 10-15 seconds. The furnace runs like that until thermostat cuts it off. I jumped out high limit switch and roll out switch and couldn't change it. I get 100 degree discharge out of the vents. The high limit switch is set at 165 degrees but again, jumping it out didn't change the cycling. I'm thinking the control board is bad but open for suggestions.

Thanks,

Craig