After my furnace runs and heats the house, sometimes the charging motor keeps running, it's a hot air propane furnace. The house will cool off and furnace won`t start unless you shut the thermostate off and reset it. I installed a new ignition control and a new thermostat. The problem still occurs. Sometimes it works fine for a day or 2, than my problem starts again.

With a NO exact name and NO exact model number furnace it could be almost anything.

Crystal ball... Tarot cards... tea leaves... Ouiji board... I'm still getting nothing...