Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This OEM flame sensor (part number 48GS400192) is the factory-specified replacement for the Carrier PY2PEB060090NB gas furnace. The flame sensor uses ionization/rectification technology to verify that a burner flame is present after ignition. When working correctly, it sends a microamp signal to the control board confirming combustion. When it fails — most commonly due to oxidation or carbon buildup on the sensing rod — the control board sees no signal, assumes a failed ignition, and shuts off the gas valve as a safety precaution. The result is a furnace that lights briefly, then shuts off after 5–8 seconds, often repeating in lockout cycles.
Compatibility: Verified fit for Carrier model PY2PEB060090NB gas furnace. Always confirm the OEM part number on your existing sensor before ordering. Need help verifying fitment? Our HVAC parts specialists are standing by — and all in-stock orders ship same business day.