The Trane CNT08177 Defrost Control Board (also known as D161244G01 or 5XRA1XPR464642023) is a high-performance replacement part for Trane heat pump systems. It is responsible for managing the defrost cycle, ensuring efficient operation in cold weather by eliminating frost buildup on the outdoor coil. This OEM board helps maintain proper heat pump function, preventing energy loss and system inefficiencies. Key Features OEM Trane control board ensures precise defrost cycle management Compatible with single-stage and two-stage Trane heat pump models Helps prevent ice buildup, protecting system components Designed for reliable performance in extreme climates Easy replacement for field service or maintenance Specifications Part Numbers: CNT08177, D161244G01, 5XRA1XPR464642023 Function: Defrost control for heat pumps Voltage: System dependent (matches Trane configuration) Mounting Type: Board mount Application: Residential and light commercial HVAC systems Compatible Models 4TWR4048N1000AA, A4HP6030A1000AA, 4TWL5030N1000AA, 4TWR5024H1000BA, A4HP4030D1000AA, 4TWX5030N1000AA, A4HP6036A1000AA, 4A6L5036N1000AA, 4TWR5042N1000AA, A4HP4060A1000AA (Shortened list ? message us for full compatibility check) Why Choose This Item This genuine Trane defrost board provides a dependable solution to cold-weather operation issues, maintaining your system's efficiency and extending the life of your unit. Whether you're performing a repair or preventive maintenance, this control board is a trusted, field-tested part that ensures optimal heat pump performance.