Tech Tips

Gas Furnace Delayed or Rough Ignition

FI0081

• Low Manifold Pressure
• High Manifold Pressure
• Poor Orifice to Burner Alignment
• Hot Surface Ignitor
• "Weak" Ignitor
• Poor Positioning
• Low Line Voltage to Ignitor
• Spark Ignition
• Incorrect Spark Gap
• Cracked Ceramic Insulator
• "Grounded" Ignition Wire
• Pitted or Corroded Spark Electrodes
• Poor Positioning of Electrodes
• "Low" Voltage to Electrodes