OEM Carrier Flame Sensor 48GS400192 for Model PY1PNB042060AAAA

This OEM flame sensor (part #48GS400192) is the factory-specified replacement for the Carrier PY1PNB042060AAAA packaged gas unit. The flame sensor — also called a flame rod — uses the principle of flame rectification to confirm that a burner flame is present after ignition. When the sensor becomes coated with oxidation or fails entirely, the control board cannot verify combustion, triggering a safety lockout. The telltale symptom: the burner ignites normally, runs for 5–8 seconds, then shuts off — often repeating two or three times before going into full lockout. Replacing this sensor restores reliable ignition and eliminates nuisance no-heat calls.

• Specs: Total length 4 5/8" | Distance to bend 3" | Distance to end 1 5/8" | Factory OEM replacement | Country of Origin: USA
• OEM vs Generic: This is the genuine Carrier OEM part, manufactured to exact factory tolerances. Generic sensors may have inconsistent rod geometry or alloy composition, causing intermittent flame signal errors that are difficult to diagnose and can shorten control board life.
• Install difficulty: 2/5 — Turn off gas and power at the disconnect before beginning. Tools needed: 1/4" hex driver or nut driver, fine steel wool or emery cloth (to clean rod if reusing bracket), and a multimeter to verify microamp signal post-install. Photograph wiring before disconnecting the sensor lead.
• Warranty: Backed by a 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PY1PNB042060AAAA packaged gas/electric unit. Verify your unit's full model number on the data plate inside the access panel before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your heat back on fast.