OEM Carrier Flame Sensor Assembly LH33WZ005 for Model PY1PPA048100AGBA

This is the genuine OEM Carrier flame sensor assembly, part number LH33WZ005, factory-specified for the Carrier PY1PPA048100AGBA packaged heat pump unit. The flame sensor (also called a flame rod) monitors the gas burner flame by detecting micro-ampere ionization current through the flame. When it detects a valid flame, it signals the integrated furnace control (IFC) board to keep the gas valve open. When the sensor fails — typically due to carbon buildup or a cracked ceramic insulator — the control board cannot confirm ignition and will cut gas flow within 5 to 8 seconds of startup, causing a no-heat lockout condition that repeats on every call for heat.

• Part Number: LH33WZ005 | Factory Authorized Parts (FAP) | Carrier OEM assembly
• Wire Lead: 64-1/2" Teflon-insulated lead wire included — no splicing required for a direct drop-in swap
• OEM vs Generic: OEM flame sensors maintain precise rod geometry and ceramic insulation ratings. Generic sensors often exhibit early carbon fouling and inconsistent microamp output, leading to nuisance shutdowns and repeat service calls.
• Install Difficulty: 2/5 — Power off the unit and verify zero voltage before starting. Tools needed: 1/4" hex nut driver, needle-nose pliers, multimeter (set to DC microamps to verify 1–10 µA after replacement). Photograph the existing wire routing before disconnecting.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse stock.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY1PPA048100AGBA packaged gas/electric unit. Always verify the part number on your existing sensor or the unit's wiring diagram before ordering — our HVAC parts specialists are available to confirm fitment at no charge. In stock and ready to ship today.