OEM Carrier Flame Sensor with Wire (LH680014) for Model PG8UAA036045ACJA

This is the OEM factory-specified flame sensor with attached wire harness, part number LH680014, designed as a direct replacement for the Carrier PG8UAA036045ACJA gas furnace. The flame sensor is a critical safety component — it detects the presence of a burner flame by passing a small microamp current through the flame to ground. When the control board does not detect this signal, it cuts off gas flow as a safety measure. A dirty or failing flame sensor is one of the most common causes of a furnace that lights, runs for 5–8 seconds, and then shuts down in a lock-out condition. This OEM replacement ensures the exact microamp threshold and rod geometry specified by Carrier, restoring reliable ignition cycle performance.

• Specs: OEM flame sensor rod with integrated wire harness | Factory-matched microamp detection threshold | Direct plug-in connector — no splicing required
• OEM vs Generic: The OEM LH680014 includes the factory wire harness with the correct connector and wire gauge. Generic sensors often omit the harness or use thinner wire, introducing resistance that mimics a weak flame signal and causes nuisance lockouts.
• Install Difficulty: 2/5 — Shut off gas and power before servicing. Tools needed: 1/4" hex driver or flat-blade screwdriver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (to verify microamp signal post-install). Disconnect the wire harness, remove the single mounting screw, swap the sensor, and reconnect.
• Warranty: 1-year OEM factory warranty. Orders ship same business day from our warehouse when placed before 3 PM local time.

Compatibility: Engineered specifically for the Carrier PG8UAA036045ACJA 80% AFUE gas furnace. Always verify the OEM part number on your existing sensor or equipment data plate before ordering. Not sure it fits? Our HVAC parts specialists will confirm fitment before you buy — no guesswork required. In stock and ships today.