OEM Carrier Flame Sensor (48GS400192) for Model PY3PPA030040NB

This OEM flame sensor is the factory-specified replacement for the Carrier PY3PPA030040NB packaged gas unit. The flame rod uses ionization/rectification technology to confirm burner ignition — it passes a small electrical current through the flame and verifies a return signal to the control board. If the sensor is coated, cracked, or out of position, the board will cut gas within 5–8 seconds of ignition, triggering a no-heat lockout condition. Replacing this sensor with the correct OEM part restores reliable flame confirmation and prevents nuisance lockouts.

• Specs: 90-degree mounting bracket | Rod length approx. 1.6 in. | Overall dimensions approx. 4.9 in. × 1.75 in. | OEM Part # 48GS400192 | Carrier factory-genuine
• OEM vs Generic: OEM sensors are precision-formed to the exact rod geometry and alloy spec. Generic sensors frequently vary in rod angle and material, leading to weak rectification signal and continued nuisance shutdowns.
• Install Difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver, needle-nose pliers, and a fine Scotch-Brite pad to lightly polish the rod. Always inspect the lead wire connector for heat damage before reinstalling.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse stock.

Compatibility: Designed for the Carrier PY3PPA030040NB packaged gas/electric unit. Verify OEM part number 48GS400192 on your unit's existing sensor or equipment data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back to heat fast.