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This OEM Carrier flame sensor assembly (part# LH33WZ005) is the factory-specified replacement for the Carrier PY1PPA060100AEBA packaged heating and cooling unit. The flame sensor is a critical safety and operational component — its flame rod extends into the burner assembly and passes a small current through the burner flame to confirm ignition. If the control board does not receive that confirmation signal within seconds, it shuts off the gas valve as a safety measure. A contaminated or failed flame sensor is one of the most common causes of a furnace that lights, runs briefly for 5–8 seconds, then locks out on a fault code.
Compatibility: Engineered specifically for the Carrier PY1PPA060100AEBA packaged unit. Always cross-reference your unit's data plate and wiring diagram to confirm part number before installation. Our fitment team is available to verify compatibility before you order — contact us with your full model and serial number.