I have a kg7tc d60d-24b that starts up and runs but when it shuts down it errors out and does not restart. I can shut power of to furnace to clear error and it repeats.

Red blinking light with green light on. No yellow light?

Any ideas what to check?

The red blinking code can typically be found on the inside of the air handler door. Can you tell us the brand? Quick guess would be a rollout or limit switch. Count the blinks and compare to the codes noted.