The Trane CNT07737 (also listed as 50A67-476-03, D342359P03) is an Integrated Furnace Control Board engineered to regulate all critical operations in modern Trane furnace systems. This OEM control board ensures precise control over ignition, fan timing, and system safety checks?helping maintain optimal performance, energy efficiency, and system protection. Key Features Integrated ignition and blower control in one compact board Controls ignition sequence, inducer and blower motors, flame sensing, and limit protection Designed for seamless plug-and-play replacement in compatible Trane furnaces Built-in diagnostic LEDs for easy troubleshooting Reliable performance for standard and high-efficiency furnaces Specifications Part Numbers: CNT07737, 50A67-476-03, D342359P03 Voltage: 24V control circuit Type: Integrated Furnace Control (IFC) Functions: Ignition control, fan timing, system safety monitoring LED Indicators: Yes ? for diagnostics Mounting: OEM fit for Trane systems Compatible Models Please verify model number and board appearance before purchasing. Commonly used in Trane and American Standard gas furnace units across multiple model families. Why Choose This Item The CNT07737 control board offers OEM reliability with integrated system management features. Trusted by HVAC professionals, it provides a dependable upgrade or replacement that restores your furnace?s full function while ensuring long-term operational safety and performance. Choose this board to avoid costly service calls and maintain consistent home comfort.