Furnace malfunctioning
My furnace stopped coming on in the middle of the night, so I had to use the stove for awhile. I kept a fan on, and a small window open to vent any excess CO. Not an efficient way to heat. Later, ...
Forum Discussion
Furnace fan is a battery eater - when batteries get depleted the fan slows down and eventually the sail switch closes which shut down the furnace. Common for furnaces to shut down in the middle of the night when batteries are iffy. Check your batteries. If your connected to shore power then this likely doesn't apply.
