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Midea VRF – CoolMaster Indoor line connection

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This article applies to the following CoolMaster products:

  • CoolMaster
  • CoolMasterPro
  • CoolMasterNet
  • CloudBox
  • Mixing different Midea series on the same line is not supported
  • Service data for outdoor units is not supported with this type of connection. For outdoor service data, CoolAutomation's device should be connected to the outdoor line as described here

Midea VRF – Indoor line connection

Maximum indoor per line: 64
  • Supported device line number: L7 (Default) , L4 , L5 , L6 (using L6 require dip switch configuration)
  • Line polarity consideration is required. If L6 was not enabled, L7 does not require polarity consideration
  • Cable type – Follow Midea's installation instructions
  • Set line type in the CoolMaster device to:  MD
  • Set dip switch P according to drawing , 
    dip switch Q,R,S are not applicable for lines 3,4,5,6,7,8
  • Follow Midea's instruction on how to address the units
  • Each system and Indoor must be set with unique address
  • Midea V6 and higher supports indoor service data
  • Do not Mix different Midea series on the same line

 

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