OEM Carrier Flame Sensor Assembly LH33WZ005 for Model PY1PNA036100ADBA

This is the genuine OEM Carrier flame sensor assembly (part number LH33WZ005), the factory-authorized replacement for the Carrier PY1PNA036100ADBA packaged heating and cooling unit. The flame sensor — also called a flame rod — is a critical safety component that monitors the burner flame via electrical rectification. When the control board sends a call for heat, the sensor confirms that ignition has occurred and signals the board to keep the gas valve open. A failed or contaminated sensor cannot pass sufficient microamp current, causing the board to shut down the gas valve within 5–8 seconds of ignition — leaving you with a system that lights briefly, then shuts off on lockout.

• Specs: OEM Carrier flame sensor assembly | 64.5" wire lead | Factory part number LH33WZ005 | Also sold as Factory Authorized Parts (FAP) designation PSE-CEA
• OEM vs Generic: OEM sensors are manufactured to exact Carrier tolerances for rod geometry, ceramic insulator grade, and wire insulation rating. Generic sensors often exhibit reduced microamp output over time, triggering nuisance lockouts and shortening control board life.
• Install difficulty: 2/5 — Turn off power and gas before starting. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, multimeter (microamp mode to verify 2–6 µA after install). Always confirm proper orientation and secure the single mounting screw snugly — loose sensors give erratic readings.
• Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY1PNA036100ADBA packaged units. Verify your existing sensor part number against LH33WZ005 before ordering. If you are unsure, our fitment team is available to cross-check your model and serial number before purchase — no guesswork needed. Order today for same-day shipping.