Honeywell ST74D1001 / Defrost Control Circuit Board 201478

Honeywell ST74D1001 / Defrost Control Circuit Board 201478 – HVAC & Refrigeration: Controls & Circuit Boards

The Honeywell ST74D1001 / Defrost Control Circuit Board 201478 is a robust, factory-original replacement designed to effortlessly regulate your refrigeration system’s defrost function. Engineered for reliability in commercial and residential settings, this circuit board streamlines defrost cycles to maximize efficiency and equipment longevity.

• OEM part: Honeywell ST74D1001 / 201478
• Category: HVAC & Refrigeration – Controls & Circuit Boards
• Application: Defrost cycle regulation
• Voltage Rating: 24V AC
• Compatibility: Universal fit for various refrigeration models

When stacked against industry standards and previous models, the Honeywell ST74D1001 sets itself apart with superior build quality and precise electronic timing. Many control boards on the market offer basic defrost timing, but this updated circuit board features improved circuitry to reduce short-cycling and component stress, promising a longer system life. Users upgrading from older versions will notice more consistent performance and smoother transitions between cooling and defrost modes, making it a preferred solution for demanding environments.

Key Technical Advantages:

• Enhanced load tolerance, ensuring reliable activation even in tough conditions
• Optimized circuit design for higher accuracy in defrost cycle control
• Built-in safety features help protect compressors and system electronics
• Easy-to-install configuration drastically reduces service time
• Universal design supports HVAC & Refrigeration compatibility without custom adjustments

Technology and Performance

The Honeywell ST74D1001 / Defrost Control Circuit Board 201478 utilizes advanced technology to provide maximum operational efficiency for HVAC & Refrigeration systems. Its 24V AC input voltage allows for safe integration and stable operation with minimal energy consumption. The universal fit ensures seamless replacement for a wide range of defrost control applications, especially where previous circuit boards showed less reliability or limited compatibility. Installers and facility managers often highlight the plug-and-play design that reduces downtime while maintaining the highest standards of performance and safety.

Choose the Honeywell ST74D1001 / Defrost Control Circuit Board 201478 for your next HVAC & Refrigeration upgrade and enjoy precision defrost management, long-lasting durability, and easy installation—all in one expertly engineered solution.