Danfoss 084B8520 Temp Controller

The Danfoss 084B8520 is a trade-grade AK-CC 210 refrigeration controller engineered for precise evaporator control in commercial supermarket applications and industrial cooling systems. This 230V temperature controller functions as a multi-application hub, integrating four specialized relays for refrigeration (compressor/solenoid), fan control, defrost management, and auxiliary alarm or lighting outputs. Designed to replace traditional thermostats and timers, the Danfoss AK-CC 210 supports multiple sensor inputs (Pt 1000, PTC, or NTC) to monitor supply and return air, ensuring compliance with HACCP temperature monitoring standards. The 084B8520 features a rugged front-panel interface with an embedded seal for demanding environments and allows for seamless integration into MODBUS or LON communication networks via optional plug-in modules. For veteran technicians, the unit offers ten pre-defined wiring applications via parameter o61, simplifying field setup for everything from simple air defrost to complex two-compressor sequences with coordinated defrost cycles.

• Multi-Relay Versatility: Consolidates control for compressors, fans, defrost heaters, and alarms into a single refrigeration controller.
• Advanced Sensor Support: High-accuracy monitoring compatible with Pt 1000 sensors for strict temperature regulation.
• Streamlined Integration: Optional data communication cards enable remote monitoring and coordination with Danfoss System Manager.
• Pre-Defined Applications: Reduces programming time with 10 built-in configuration presets for various HVACR scenarios.
• HACCP Compliance: Integrated temperature registration and high-temperature alarm logging for food safety protocols.

How do I configure the AK-CC 210 for a specific application?
To change the application mode, you must first access parameter r12 (main switch) and set it to 0 (off). Then, use parameter o61 to select the desired wiring configuration (1 through 10) before switching r12 back to 1 to resume regulation.

What do flashing icons on the display signify?
Flashing LEDs on the left side of the 3-digit display indicate an active alarm condition. You can perform a short press on the upper button to view the specific alarm code or status error.

Can I manually initiate a defrost cycle from the controller?
Yes. A long press (approximately 4–5 seconds) on the bottom button will manually trigger a defrost cycle, indicated by the defrost icon and a "-d-" status on the display during the process.

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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.