I have a heil furnace model # 867.768242 when I turn it on it lites up normaly. Then after about five minuts the burner turns off, and relites itself 20 seconds later. This action will go on repeatly over & over for twenty minutes or so. Then finally the burner will stop liteing all together. Please advise I am freezing!

Look at the circuit board,, is it blinking a code,, if not it might be the flame senser needs cleaning,, might be anticipater in tstat need reset,, let us know

444 brookies. Will someone please answer my Question.

If you dissagree with the things I suggest,, I can`t help you