OEM Carrier Flame Sensor 48GS400192 for Model PY1PEB048115ABAA

This is the genuine OEM Carrier flame sensor (part #48GS400192) — a 90-degree rod-style sensor with mounting bracket — factory-specified for the Carrier PY1PEB048115ABAA gas furnace. The flame sensor uses ionization/rectification to detect the presence of a burner flame during each heating cycle. When the burner lights, the flame generates a small DC microamp signal through the rod; the control board reads this signal as confirmation that combustion is occurring. If the sensor is absent, fouled with oxide buildup, or failed, the board will shut off the gas valve within 5–8 seconds as a safety precaution — resulting in a no-heat lockout condition that typically repeats on every call for heat.

• Part Number: 48GS400192 | OEM Carrier replacement | 90° rod angle | Includes mounting hardware
• OEM vs Generic: This is a genuine Carrier OEM part — factory-matched rod material, coating, and bracket geometry ensure accurate microamp signal output and reliable board communication. Aftermarket sensors may use inferior rod alloys that oxidize faster and trigger false lockouts.
• Install Difficulty: 2/5 — Power off the furnace at the disconnect and thermostat before beginning. Tools needed: 1/4" nut driver or flat-head screwdriver, needle-nose pliers, soft emery cloth (to clean bracket contact). Disconnect the single wire connector, remove the one mounting screw, swap the sensor, and reconnect. Test with a full heating cycle.
• Warranty: 1-year OEM manufacturer warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY1PEB048115ABAA packaged gas/electric unit. Always verify your unit's data plate and existing part number before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — we verify compatibility before you buy.