OEM Carrier Flame Sensor 48GS400192 for Model PY2PEB042090AB

This is the genuine OEM flame sensor (part number 48GS400192) factory-specified for the Carrier PY2PEB042090AB packaged gas unit. The flame sensor — also called a flame rod — is a safety component mounted in the burner assembly that detects the presence of an active flame via electrical rectification. When the sensor's rod becomes coated with oxidation or carbon buildup, its microamp signal drops below the control board's detection threshold, causing the furnace to ignite briefly and then shut down in lockout — typically 5 to 8 seconds after the burner lights. Replacing the sensor with a genuine OEM part restores precise signal accuracy and reliable heat delivery.

• OEM Part Number: 48GS400192 | Genuine Carrier factory replacement — no adaptation or modification required
• OEM vs Generic: OEM flame sensors are manufactured to exact rod geometry, ceramic insulator grade, and lead wire specifications. Generic aftermarket sensors may present incorrect microamp output, triggering nuisance lockouts even after installation.
• Install Difficulty: 2/5 — Turn off gas and 24V power before beginning. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single lead wire, remove the mounting screw, swap the sensor, and reconnect. Always verify flame signal (µA) with a multimeter after installation to confirm proper operation.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse — order by 3 PM local time.

Compatibility: Engineered specifically for the Carrier PY2PEB042090AB packaged gas/electric unit. Verify your existing part number on the sensor body or the unit's wiring diagram before ordering. Our fitment team is available to confirm compatibility — contact us before you buy.