Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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This OEM Carrier flame sensor is the precision component your furnace relies on to confirm the burner has ignited. It generates a microamp signal that tells the control board flame is present; when the sensor oxidizes or cracks, the board shuts down the burner as a safety measure, causing short-cycling or no-heat conditions. Engineered as a direct-fit replacement for Carrier model LC348TM401844, it restores reliable ignition without modification. Installation is straightforward for a handy homeowner or technician: shut off power and gas, remove the single mounting screw, swap the sensor, and reconnect the lead—typically a 15-20 minute job. Always verify proper grounding and clean any adjacent surfaces for a stable flame signal. Using a genuine OEM part ensures correct microamp output and long service life versus generic alternatives. In stock and ships same-day when ordered before 3PM CST, so you can get your heat back fast. Backed by our HVAC parts expertise and fast nationwide delivery.
This part is compatible with Carrier model LC348TM401844.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.