62-23543-01 Furnace Flame Sensor Replacement - For Rheem, Ruud, WeatherKing, Thermal Zone, DuroGuard Furnace - 2 Pack

62-23543-01 Furnace Flame Sensor Replacement - For Rheem, Ruud, WeatherKing, Thermal Zone, DuroGuard Furnace - 2 Pack62 23543 01 Furnace Flame Sensor Key Features Sensing Rod Material: Metal alloy Insulator Material: Alumina ceramic Termination: 1 4 inch male quick connect Total Length (Mounting Flange to Sensor Tip): 2 1 2 inches Sensor Offset Length: 1 9 16 inches Sensor Offset Angle: 90 degrees Function: Detects burner flame for safe furnace operation Replaces Cross Reference Part Numbers 62 23543 01 62 23543 02 62 23543 03 62 23543 04 PSE RH8 Compatibility &

62-23543-01 Furnace Flame Sensor

Key Features

• Sensing Rod Material: Metal alloy
• Insulator Material: Alumina ceramic
• Termination: 1/4 inch male quick connect
• Total Length (Mounting Flange to Sensor Tip): 2-1/2 inches
• Sensor Offset Length: 1-9/16 inches
• Sensor Offset Angle: 90 degrees
• Function: Detects burner flame for safe furnace operation

Replaces / Cross-Reference Part Numbers

• 62-23543-01
• 62-23543-02
• 62-23543-03
• 62-23543-04
• PSE-RH8

Compatibility & Fitment

• Designed for Hot Surface Ignition (HSI) and spark ignition systems
• Compatible with gas furnaces from brands including Rheem, Ruud, WeatherKing, Thermal Zone, and DuroGuard
• Mounts directly on the burner assembly or adjacent to the igniter

When to Replace

• Furnace ignites but shuts down after a few seconds
• Furnace control board indicates a flame sensor fault or error code
• Visible carbon buildup, corrosion, or damage to the existing sensor rod

Installation Tips

• Disconnect electrical power and shut off the gas supply to the furnace before servicing.
• Avoid touching the metal sensor rod with bare hands; skin oils can cause premature failure. Handle with clean gloves or a cloth.
• Handle the ceramic insulator carefully to prevent cracks or damage.
• Ensure the sensor rod is properly positioned in the path of the flame for accurate detection.
• Confirm all electrical connections are secure before restoring power.