OEM Carrier Flame Sensor (48GS400192) for Model PY3PPA042060AB

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY3PPA042060AB gas furnace. The flame sensor is a critical safety component — it uses ionization/rectification technology to detect the presence of a burner flame during each heating cycle. When the furnace ignites, the flame produces a small microamp electrical signal that the sensor sends back to the control board to confirm combustion. If the board doesn't receive that signal within a few seconds, it cuts off the gas valve as a safety measure. A failed or carbon-fouled sensor is one of the most common reasons a furnace will fire up, then shut off after just 5–8 seconds, leading to a no-heat lockout condition.

• Specs: 90° mounting angle | Approx. 4.9" L × 1.75" H | Includes mounting bracket | Factory OEM fit for Carrier/Bryant gas furnaces
• OEM vs Generic: This is the genuine Carrier-manufactured sensor rod, ensuring correct microamp sensitivity and exact dimensional fit. Aftermarket sensors can read weak flame signals inconsistently, causing nuisance lockouts or masking true ignition problems.
• Install Difficulty: 2/5 — Turn off gas and power before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single wire lead, remove the mounting screw, swap the sensor, and reconnect. Lightly sand the rod only if reusing a contaminated sensor — always install new when in doubt.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Designed and factory-matched for the Carrier PY3PPA042060AB gas furnace. Always verify part number 48GS400192 against your unit's data plate or wiring diagram before ordering. Our team is available to confirm fitment — just reach out before you buy. In stock — order now for same-day shipping.