Thermostat Not Working THERMOSTAT BLANK or THERMOSTAT DOESN’T WORK– The display on a digital thermostat shows no information or the thermostat does not function properly. POSSIBLE PROBLEM

Thermostat Blank THERMOSTAT BLANK or THERMOSTAT DOESN’T WORK– The display on a digital thermostat shows no information or the thermostat does not function properly. POSSIBLE PROBLEM &

Odor ODOR – On a unusual smell coming from the furnace or ductwork. POSSIBLE PROBLEM & DESCRIPTION Seasonal Start-Up It is normal to have a burning

Noise NOISE – An unusual sound is coming from the furnace. POSSIBLE PROBLEM & DESCRIPTION Loose Belt Some older furnaces use a belt-drive motor and blower

Pilot Out PILOT OUT – On a “standing-pilot” furnace, the pilot light is not burning and the furnace will not come on. POSSIBLE PROBLEM & DESCRIPTION

Burners Won’t Stay Lit BURNERS DON’T STAY LIT – The furnace burners fire, but go off before the thermostat temperature is satisfied. https://www.youtube.com/watch?v=TH24B-WdsAo POSSIBLE PROBLEM &

Fan Doesn’t Run FAN DOESN’T RUN – The furnace fires, but the blower does not start. After the burners have ignited, the next step in the

Fan Runs Continuous FAN RUNS CONTINUOUS – The thermostat maintains the correct temperature, but the indoor fan never quits blowing. POSSIBLE PROBLEM & DESCRIPTION Thermostat “Fan”

Runs Too Much RUNS TOO MUCH & LOW HEAT – The gas furnace seems to run too long or the furnace kicks on too often. May

Sometimes Doesn’t Heat FURNACE SOMETIMES DOESN’T HEAT – In this situation, a gas furnace will heat most of the time, but every once in a while