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This is the genuine OEM replacement flame sensor (part number 48GS400192) for the Carrier PY3PPA060130AA gas furnace. The flame sensor — also called a flame rod — is a critical safety component that detects the presence of a burner flame using ionization/rectification technology. When the burner ignites, the flame produces a measurable microamp electrical signal that the control board reads to confirm combustion. If the sensor is coated with oxidation or has failed entirely, the board cannot confirm flame presence and will shut off the gas valve within 5–8 seconds, causing a frustrating no-heat lockout condition.
Compatibility: Confirmed fit for Carrier model PY3PPA060130AA gas furnace. Always verify your existing part number on the sensor body or the unit's wiring diagram before ordering. If you're unsure, our HVAC parts specialists are available to confirm fitment before your purchase — order with confidence and get your heat restored fast.