CoolMaster - HVAC Line Special Functions

This article applies to the following CoolMaster products:

  • CoolMaster
  • CoolMasterPro 
  • CoolMasterNet

CoolMaster line has additional configuration that can be applied through the CoolMaster


Set CoolMaster as Master/Slave in the VRF network.

By default, CoolMaster is set as Master. In some cases, with specific HVAC brands (LG and Samsung), when original central controller is installed in the project, it should be manually set to Slave.

Enable the Scan option.

Scanning the HVAC line is an automatic process that autodetects connected indoor units. In some cases, when CoolMaster set to Slave, manual Scan should be disabled. By default, manual Scan is enabled.

Enable the DC Out option.

Required only with Daikin or Mitsubishi Electric NON-VRF systems with the corresponding DIP switch positions. Before enabling this function, please consult with Coolautomation tech support


After changing these settings, reset the device (Power Off)

To configure these options, follow these tteps:

  • Click on the Gear button


  • Select HVAC Lines


  • Change settings to your requirements


  • Restart CoolMaster


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