OEM Carrier Flame Sensor Assembly LH33WZ005 for Model PY1PNA048100AFBA

This is the genuine OEM Carrier flame sensor assembly (part# LH33WZ005), the factory-specified replacement for the Carrier PY1PNA048100AFBA packaged unit. The flame sensor — also called a flame rod — is a safety-critical component that monitors the burner flame after ignition. A small electrical current passes through the rod; if it detects a stable flame, the gas valve stays open and heating continues. When the sensor fails or becomes coated with oxidation, the control board loses the flame signal and shuts off gas as a safety precaution — typically within 5 to 8 seconds of ignition. The result: your unit fires up briefly, then locks out on a no-flame fault code.

• Specs: OEM Carrier flame sensor assembly | 64.5" wire lead | Flame rod construction | Factory Authorized Part (FAP) | MFG# LH33WZ005 | Country of Origin: USA
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact OEM tolerances. Generic sensors frequently use lower-grade rod alloys that oxidize faster and exhibit erratic microamp readings — causing nuisance lockouts and premature control board wear.
• Install Difficulty: 2/5 — A straightforward repair for any qualified HVAC technician. Shut off power and gas before starting. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, multimeter (to verify microamp output post-install). Always photograph existing wire routing before disconnecting. Verify microamp flame signal (typically 1.5–4 µA DC) after reinstall.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse. Includes original Carrier packaging.

Compatibility: Direct OEM replacement for Carrier model PY1PNA048100AFBA packaged heating/cooling unit. If you're unsure of fitment, our HVAC parts specialists can verify the part against your unit's serial number and wiring diagram before you order — contact us before purchasing. In stock and ready to ship today.