OEM Carrier Flame Sensor LH33WZ003 for Model PY1PNA042060ADBA

This OEM flame sensor (part number LH33WZ003) is the factory-specified replacement for the Carrier PY1PNA042060ADBA gas furnace. The flame sensor — also called a flame rod or sensing electrode — is a safety-critical component that detects the presence of an active burner flame using electrical ionization. When the burner lights, the sensor passes a small microamp current through the flame to confirm combustion. If the control board does not detect this signal, it shuts off the gas valve within 5–8 seconds as a safety lockout. A failed or contaminated sensor is one of the most common causes of a furnace that lights briefly and then shuts down repeatedly, triggering a fault code on the control board.

• Specs: Direct Spark Ionization (DSI) type | Factory Authorized Parts (FAP) branded | Compatible with LH33WP001 ignitor | Replaces: LH33WZ003, LH33WZ003A, LH33WZ001 | Weight: 1 lb
• OEM vs Generic: This is a genuine OEM Factory Authorized Part manufactured to Carrier's exact geometry, rod length, and bracket angle. Generic sensors can have mismatched rod positioning, leading to weak ionization signal, nuisance lockouts, and premature control board wear.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if reusing). Disconnect the single wire connector, remove the mounting screw, swap the sensor, and restore power. Always verify microamp reading (typically 1–10 µA) with a multimeter after install.
• Warranty: 1-year OEM manufacturer warranty. In stock — ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY1PNA042060ADBA gas furnace. Verify your unit's data plate and existing part number before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — call or chat today.