Carrier 48GS400192 Flame Sensor

The Carrier 48GS400192 Flame Sensor is a critical safety component designed for precise flame rectification in Carrier, Bryant, and Payne gas-fired rooftop units and furnaces. Engineered to withstand high combustion temperatures, this HVAC flame rod monitors the burner flame and sends a microamp signal to the integrated furnace control (IFC) to maintain the gas valve circuit. If the sensor detects a loss of flame or carbon buildup, it immediately signals a lockout to prevent unburned gas from accumulating in the heat exchanger, ensuring system safety and operational reliability.

For technicians performing routine HVAC troubleshooting or preventative maintenance, replacing a fouled or oxidized sensor with an OEM Carrier replacement part like the 48GS400192 ensures proper microamp signal readings. This sensor features a durable ceramic insulator and a high-grade metal probe, specifically designed for gas furnace repair and rooftop unit maintenance. Proper alignment within the burner flame is essential for consistent performance and preventing furnace short cycling issues common with worn-out sensors.

• OEM Precision: Direct replacement part ensures exact fit and compatibility with Carrier 48GS series units, eliminating the need for field modifications.
• Enhanced Durability: Constructed with high-temperature alloys to resist flame sensor corrosion and oxidation over extended run cycles.
• Reliable Signal: Consistent flame rectification signal prevents nuisance trips and unexpected system downtime during high-demand periods.
• Standardized Installation: Single-bolt mounting flange allows for rapid swap-outs during diagnostic service calls.

What are the symptoms of a failing 48GS400192 sensor?
The most common indicators are the furnace lighting for several seconds and then shutting down, or the control board flashing a code for "low flame signal" despite a visible burner flame.

Can I clean this sensor instead of replacing it?
While cleaning with a non-abrasive material can temporarily restore a flame signal, the protective coating on the flame rod eventually degrades. For long-term reliability in commercial applications, a full replacement is recommended.

Is this compatible with other Bryant or Payne models?
Yes, as an ICP replacement part, this sensor is cross-compatible with various models within the Carrier family of products that specify the 48GS400192 part number.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.