OEM Carrier Flame Sensor Assembly LH33WZ005 for Model PY1PNA036120ACBA

This OEM Carrier flame sensor assembly (part# LH33WZ005) is the factory-specified replacement for the Carrier PY1PNA036120ACBA packaged heat pump unit. The flame sensor — also called a flame rod — monitors the burner flame by passing a small microamp current through the rod and back through the burner ground. When the sensor is coated with oxidation or fails electrically, the control board cannot confirm combustion and shuts the burner down as a safety measure. The classic symptom: your system lights, runs for 5–8 seconds, then shuts off — repeating until it goes to hard lockout.

• Specs: OEM part# LH33WZ005 | 64.5" wire lead assembly | Factory Authorized Parts (FAP) | Carrier/Bryant/Payne cross-compatible
• OEM vs Generic: OEM flame rods are manufactured to exact alloy and geometry tolerances, ensuring consistent microamp output across the full burner temperature range. Aftermarket rods vary in rod diameter and alloy composition, leading to nuisance lockouts especially at low-fire stages.
• Install difficulty: 2/5 — Power down and confirm zero voltage before servicing. Tools needed: 1/4" hex driver, needle-nose pliers, multimeter (microamp mode for verification). Always confirm microamp reading (1.5–4 µA typical) after installation before closing the unit.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse in original Carrier Factory Authorized Parts packaging.

Compatibility: Engineered for the Carrier PY1PNA036120ACBA packaged unit. Also cross-references to Bryant and Payne units sharing the LH33WZ005 specification — always verify your unit's data plate and wiring diagram before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — contact us today and get your part shipped the same day.