Description
The Heatcraft Refrigeration 28910104 is an OEM Quick Response Controller (QRC) control board loaded with V4.4 firmware, engineered as a direct replacement for compatible Heatcraft refrigeration unit evaporators and condensing units. This board serves as the central intelligence of the refrigeration system, managing defrost cycles, fan motor operation, temperature setpoints, and alarm outputs to keep your refrigeration equipment running at peak efficiency.
Key Features
- OEM Heatcraft replacement QRC control board with V4.4 firmware pre-installed
- Manages defrost initiation, termination, and drip-down timing for precise cycle control
- Controls evaporator fan motor sequencing and operation modes
- Supports temperature setpoint configuration for walk-in cooler and freezer applications
- Integrated alarm output for system fault notification
- Direct plug-in replacement for compatible Heatcraft evaporator and refrigeration unit models
- V4.4 firmware provides the latest operational logic and enhanced system diagnostics
Application
Designed for use with Heatcraft Refrigeration Products evaporators and refrigeration systems that utilize the QRC platform. Ideal for service technicians performing board-level replacements to restore full system functionality without the need for complete unit replacement.
Why Choose OEM?
Using the genuine Heatcraft OEM control board ensures compatibility with existing wiring harnesses, sensors, and system components. The pre-loaded V4.4 firmware eliminates the need for field programming updates, reducing installation time and the risk of configuration errors.
Specifications
- SKU: 28910104
- Brand: Heatcraft Refrigeration
- Board Type: QRC (Quick Response Controller)
- Firmware Version: V4.4
- Application: Commercial refrigeration evaporators and condensing units









