HVAC control FAQ

A list of frequently asked questions regarding CoolAutomation HVAC controls
Wish to ask a question? contact us at info@coolautomation.com

  • CoolMaster

    • Below is an example of information that can be reflected on CoolMaster LCD.

      In this example VRV system has 3 indoor units with external addresses 1.01, 1.02 and 1.03. You can gather following information looking at the CoolMaster LCD.

      Unit ON/OFF Set Temperature Fan Speed Mode Failure Code
      1.01 OFF (-) 18° High Cool U4
      1.02 ON (+) 20° Low Fan No (OK)
      1.03 OFF (-) 18° High    

      The strange string U03 G03 A3 U4 means that there are 3 indoor units – U03 and 3 indoor units with preset external address – G03. Failure codes A3 and U4 were detected in system.

    • CM4-FW

      • Select COM Port where CoolMaster is connected to and click “Open”
      • Click “Load FW Image” and browse for desired image file
      • Click “Update” to start FW update procedure
      • If HVAC Type change is required please use “HVAC Type” tab

      CM4-FW2

    • CoolMaster DIP switches config

      1.How to set dip switches for changing manufacturer compatibility

      Type 1 2 3 4
      Mitsubishi OFF OFF OFF OFF
      Daikin ON OFF ON OFF
      Sanyo/Toshiba/Hitachi OFF ON OFF ON

      2.How to set dip switches for non VRV eqipment

      This dip switch is only used for non VRF Daikin and Mitsubishi HVAC systems (split, mini-split, multi-split).
      Only in case, where there is no measured voltage on the air conditioning communication line (4), all 4 pins should be changed to position “1”. After changing the dip switch position, CoolMaster should be restarted, and DC voltage should be measured on the green plug (5).

      IMPORTANT!

      Improper use of the dip switch for DC Power output may harm the CoolMaster!

       

  • CoolMasterNet

  • Installation

      1. Configure DIP Switches according to the below picture:

      faq

      2. Contact CoolAutomation with S/N of your unit and desired HVAC type. You will get activation string that should be sent to CoolMasterNet as regular command:

       

      >@=1A52330B97FD78A88091543F26488FF8 
      OK, Boot Required!

    • FW_Updatrer

    • CM4-FW

      • Select COM Port where CoolMaster is connected to and click “Open”
      • Click “Load FW Image” and browse for desired image file
      • Click “Update” to start FW update procedure
      • If HVAC Type change is required please use “HVAC Type” tab

      CM4-FW2

    • CoolMaster DIP switches config

      1.How to set dip switches for changing manufacturer compatibility

      Type 1 2 3 4
      Mitsubishi OFF OFF OFF OFF
      Daikin ON OFF ON OFF
      Sanyo/Toshiba/Hitachi OFF ON OFF ON

      2.How to set dip switches for non VRV eqipment

      This dip switch is only used for non VRF Daikin and Mitsubishi HVAC systems (split, mini-split, multi-split).
      Only in case, where there is no measured voltage on the air conditioning communication line (4), all 4 pins should be changed to position “1”. After changing the dip switch position, CoolMaster should be restarted, and DC voltage should be measured on the green plug (5).

      IMPORTANT!

      Improper use of the dip switch for DC Power output may harm the CoolMaster!

       

  • Troubleshooting

    • CoolMasterNet requires USB Driver installed for both Application (regular) and Bootloader modes. If for some reason USB driver was not properly installed, it can be fixed/forced with free Zadig tool.

      Zadig

       

      WinUSB Driver for CoolMasterNet will be installed. Now you can use CoolAutomation FW Update Tool. If USB Driver is required for Bootloader mode CoolMasterNet should be in Boot Mode during procedure mentioned above.

        1. Connect CoolMaster to your PC via RS232 port
        2. Extract attached d3dump.zip, it will create D3dump folder with following content:

      cygwin1.dll
      d3dump.bat
      d3dump38400.bat
      d3ttm.bat
      d3ttm38400.bat
      x232.exe

        1. Go to D3dum folder
        2. Double click BAT file (suggested by CoolAutomation support) to run it.
        3. Specify RS232 port number on the prompt

      ComPort: 1

      You must specify RS232 port number the CoolMaster is connected to.

        1. Let the program to run. To terminate program press Ctrl-C
        2. Trace will be stored in log file like this one:

      x232-2010.10.01.130746.log

      1. Power reset CoolMaster

      What to do with a log?

      Log should be sent to CoolAutomation staff for analysing.

or

Log in with your credentials

Forgot your details?