The Heatcraft 4267W Adjustable Defrost Control and Fan Delay Switch is a refrigeration control component designed to support defrost termination and evaporator fan-delay operation in compatible Heatcraft unit coolers. The adjustable control helps coordinate the transition from defrost back to normal refrigeration operation, allowing the evaporator coil to reach appropriate operating conditions before fan operation resumes.

Standard Features:

• Combined defrost control and fan-delay functionality
• Adjustable control configuration
• Helps terminate defrost operation under appropriate system conditions
• Delays evaporator fan operation following defrost
• Helps prevent warm or moisture-laden air from circulating immediately after defrost
• Supports effective frost management and airflow control
• Designed for compatible Heatcraft commercial refrigeration equipment

Application and Service Features:

• Suitable for cooler, freezer, and unit cooler applications
• Helps restore proper defrost termination and fan-delay operation
• Adjustment settings should match the refrigeration application
• Wiring and mounting configuration should be verified before installation
• System operation should be tested through a complete defrost cycle after replacement
• Installation should be completed by a qualified refrigeration technician