Gas Furnace Symptoms
Electrical

Standard Furnace Diagnostic Codes	Electrodes Not Sparking (DSI)
Indoor Blower and Inducer Motor Running/Unit Will Not Fire	Pressure Switch Not Closing
Inducer Motor Runs/ Unit Will Not Fire	HSI Not Heating
Nothing Runs/Unit Will Not Fire	No Furnace Operation/LED Flashing Five Times
Roll Out Limit Tripping	Does Not Sense Flame
Main Limit Tripping	Indoor Blower Will Not Run On Cooling Speed
Indoor Blower Runs Constantly	Indoor Blower and Inducer Run All The Time
Indoor Blower Does Not Run/ Outside Unit Runs	Indoor Blower Does Not Run/ Outside Unit Does Not Run
Heat Assisted Limit Tripping	Indoor Blower Runs Constantly

Gas Furnace SymptomsElectrical