Have HVAC Questions? Ask an HVAC Expert for Answers
Hi I'm Brian and I'm here to help!
Try turning off the 120 volt breaker to the furnace for 30 seconds to reset it. If this doesn't work, it's possible the vent was partially clogged at some point and the flame rolled out of the burner. Right next to the burners in the furnace there will be one or more flame roll out switches and they are manual reset safeties. There will be a tiny pushbutton in the center of the roll out switch between the two wiring terminal connectors. Try resetting that(those) switch(switches). Click Here for a picture of a roll out switch.
One of these solutions should get you back up and running after a clogged exhaust vent.
Try that and we can go from there.