OEM Carrier Flame Sensor Assembly LH33WZ005 for Model PY1PEA042120ACBA

This is the genuine OEM Carrier flame sensor assembly (part# LH33WZ005), factory-specified for the Carrier PY1PEA042120ACBA packaged unit. The flame sensor — also called a flame rod — is a critical safety component that detects the presence of a burner flame and signals the control board to keep the gas valve open. When the sensor fails or becomes coated with oxidation, it can no longer pass sufficient microamp current to the control board, causing the furnace or packaged unit to light briefly and then shut down — typically within 5 to 8 seconds of ignition. This is one of the most common heating service calls in the field.

• Specs: OEM Carrier flame sensor assembly | 64½" wire lead | Factory-matched microamp output | Designed for use with Carrier packaged gas heating systems
• OEM vs Generic: This is a genuine Factory Authorized Parts (FAP) sensor, engineered to exact Carrier tolerances. Generic aftermarket sensors can exhibit inconsistent microamp readings and premature oxidation, leading to repeat service calls within a single season.
• Install difficulty: 2/5 — Turn off gas supply and 24V control power before servicing. Tools needed: ¼" hex or flat-blade screwdriver, multimeter (set to microamps to verify 2–10 µA on call for heat). Always inspect the flame rod surface for oxidation and clean or replace as needed. No soldering required — plug-and-play connector.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Directly replaces OEM part number LH33WZ005 on the Carrier PY1PEA042120ACBA packaged unit. Verify your model and part number on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us before placing your order.