Carrier Micro Link 3 Controller 12-56008 | Refrigeration Unit Main Controller, Reefer System

NEW. WITHOUT ORIGINAL PACKAGING.

The Carrier Micro Link 3 Controller (P/N 12-56008) is a main electronic control unit (ECU) designed for Carrier Transicold transport refrigeration systems used on trucks and trailers.

This controller acts as the central brain of the refrigeration unit, processing inputs from temperature and pressure sensors, controlling compressors, fans, valves, and defrost cycles, and communicating with the cab controller and service/diagnostic interfaces. Built for harsh mobile environments, the Micro Link 3 provides reliable operation under vibration, temperature extremes, and continuous duty typical of cold-chain logistics.

⚙️ Key Specifications

• Manufacturer: Carrier (Carrier Transicold)

• Product Name: Micro Link 3 Controller

• Part Number (P/N): 12-56008

• Generic Configuration (CNF): 69NT40-541-XX

• Software Version: 51XX

• Type: Main refrigeration controller / ECU

• Functions:

  • Temperature and system control

  • Compressor, fan, valve management

  • Defrost control

  • Fault monitoring and diagnostics

  • Communication with cab control panel

• Interfaces: Multiple I/O, controller software programming port

• Mounting: Panel / control box

• Design: Industrial, vibration-resistant

🚚 Typical Applications

• Carrier Transicold transport refrigeration units

• Refrigerated trucks and trailers

• Cold-chain logistics and mobile refrigeration systems

• Systems based on Micro Link 3 architecture