OEM Carrier Flame Sensor with Wire LH680014 for Model PG8UAA042091ACJA

This is the factory OEM flame sensor with wire harness for the Carrier PG8UAA042091ACJA gas furnace. The flame sensor is a critical safety component — it generates a small microamp current when immersed in the burner flame, signaling the control board that combustion is confirmed. When the sensor fails or becomes coated with oxidation buildup, the board cannot verify flame presence and will shut off the gas valve after 5–8 seconds, causing the furnace to lock out after 3 repeated attempts. Homeowners typically notice repeated short-cycling, a “lights then goes out” symptom, or a no-heat lockout fault code.

• Specs: OEM part number LH680014 | Includes pre-attached wire harness | Factory-matched geometry and rod length for precise burner insertion | Rated for use with natural gas and propane configurations
• OEM vs Generic: This OEM sensor meets Carrier’s exact microamp threshold specifications. Aftermarket sensors may have incorrect rod angles, inferior coatings, or looser tolerances — causing nuisance lockouts or premature failure even after installation.
• Install Difficulty: 2/5 — Turn off gas and power before servicing. Tools needed: 1/4” hex driver or small flathead screwdriver, fine steel wool or emery cloth (to lightly clean rod if reusing), and a multimeter to verify microamp output. Always confirm gas is off before removing the sensor bracket.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered specifically for the Carrier PG8UAA042091ACJA packaged gas furnace unit. Always verify the part number on your existing sensor’s label or your unit’s wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy if you have any questions. Order now and ship today!