Copeland Comfort Control (White Rodgers) 47D01U-843 Defrost Control

The Copeland Comfort Control (White Rodgers) 47D01U-843 is a universal microprocessor-based defrost controller specifically engineered as a high-performance replacement for single-stage heat pump systems. This OEM-quality control board offers the versatility to upgrade traditional time/temperature defrost setups to high-efficiency demand defrost routines, effectively reducing unnecessary cycles and system wear. It features a unique 8x8 LED matrix display that streamlines HVAC diagnostics and configuration, even in low-light conditions. Designed for maximum compatibility, it supports both O and B reversing valve applications and integrates 24V brownout protection, short cycle delays, and reversing valve shift delays to protect the compressor from mechanical stress. Whether you are replacing a legacy White-Rodgers 47D01U-843 or one of over 200 OEM controls, this board ensures reliable operation in varied climates.

Key Benefits

• Universal Compatibility: Replaces over 200 part numbers from major brands including Lennox, Trane, Carrier, and York.
• Advanced Protection: Integrated high/low pressure switch inputs and low-temperature compressor cutout prevent operation under hazardous conditions.
• Ease of Installation: Features a rotating LED display to accommodate any mounting orientation and quick OEM setup menus for faster commissioning.
• Energy Efficiency: Converts older timed-defrost units into demand defrost systems and includes electric heat lockouts to lower utility costs.
• Reliable Diagnostics: The LED interface provides real-time status and clear fault codes, eliminating guesswork during service calls.

Common Questions

Can I use the 47D01U-843 to replace a demand defrost board?
Yes, this controller is fully configurable for both demand and time/temperature routines, making it a suitable replacement for most single-stage logic boards.

Does this board support 50Hz and 60Hz systems?
Yes, it is rated for both, though it is important to note that timings are approximately 20% longer when operating on a 50Hz power supply.

How do I handle the reversing valve configuration?
The board is selectable for O (energized in cooling) or B (energized in heating) reversing valve signals via the onboard configuration menu.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.