Carrier 48GS400192 Flame Sensor Technicians should note that the

Technicians should note that the K19AT-18 is functionally identical to the K19AT-18H

directly supporting the mechanical responsiveness of the low water cut-off system

This Therm-O-Disc MicroTemp thermal cut-off is engineered to interrupt the electrical circuit if internal temperatures exceed the critical 144°C (291°F) threshold

Repeated tripping of the rollout limit switch usually indicates a heat exchanger failure

Carrier 48GS400192 Flame Sensor Technicians should note that theThe 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