Got up this morning and the house felt cool. Thermostat said 65. Went to the furnace and had a 5 light blink. The manual says: 5 Blinks: (In Auto Light Mode Only) Indicates that the igniter has failed to light the fire after 4 consecutive 8 minute attempts. To reset - Turn the ModeSelector to off and back to automatic I wasn't trying to start it and the furnace has been running non stop. I have no indications of losing power overnight for it to have gone out and try to have restart. Plus there were no unburned pellets in the burn pot like it had tried to restart and failed. Did the reset and it restarted OK. Sometimes these pellet things are weird.