BlueStars 4 Packs 62-23543-01 Furnace Flame Sensor Replacement Part - Compatible with Rheem, Ruud, WeatherKing, Thermal Zone, DuroGuard Furnace - Replace 62-23543-02 62-23543-03 62-23543-04

62-23543-01 Furnace Flame Sensor Replacement Part - Replace 62-23543-02 62-23543-03 62-23543-04 - Pack of 4

Key Features

• Package includes four (4) flame sensors.
• Detects flame in gas furnaces to allow the main burner to operate.
• Acts as a critical safety device by confirming the presence of a flame.
• Dimensions: 4 in x 1.6 in.
• Features a 90-degree bend for proper positioning.

Replaces / Cross-Reference Part Numbers

• 62-23543-01
• 62-23543-02
• 62-23543-03
• 62-23543-04
• 62-23543-01K

Compatibility & Fitment

• Fits select gas furnace and packaged unit/RTU models from the following brands:

When to Replace

• Furnace ignition sequence starts but shuts down after a few seconds.
• Burners fail to remain lit.
• Existing sensor rod shows signs of corrosion or heavy carbon buildup.
• Furnace control board indicates a flame sensor fault via a diagnostic code.

Installation Tips

• Disconnect all electrical power and shut off the gas supply to the furnace before beginning service.
• Handle the new sensor by its ceramic insulator; avoid touching the metal rod with bare hands to prevent contamination.
• Ensure the sensor is securely mounted and the rod is properly positioned in the path of the pilot or main burner flame.
• Confirm all wiring is reconnected correctly before restoring power and gas.

Compatibility & Fitment