Refrigerator Defrost Control Board

The W10366605 Defrost Control Board (also called the adaptive defrost control or ADC) manages the automatic defrost cycle of frost-free refrigerators. It evaluates usage patterns and temperature conditions to initiate and terminate defrost events, helping prevent frost buildup while maintaining cooling efficiency.

Key Features:

• Adaptive (smart) defrost logic rather than fixed-interval defrost timing

• Four terminal outputs for heater, compressor, evaporator fan, and supply line

• Operates at 120 VAC input, matching typical refrigerator control power

• Includes mounting holes and PCB form factor matched to factory assemblies

• Monitors run time and temperatures to calculate optimal defrost periods

• Compatible with certain Whirlpool, Kenmore, KitchenAid, and related refrigerator models listing W10366605 (or cross-references WPW10366605, AP6020483) as the defrost control component