
2Contents
2
CoolMaster PRM
www.coolautomation.com
© 2011 Cool Automation LTD
Table of Contents
Part I
Revisions History
3
Part II
RS232 Interface
4
................................................................................................................................... 41 Mechanical and Electrical Specification
................................................................................................................................... 52 Port Settings
Part III
General Protocol Definitions
6
................................................................................................................................... 61 Message format
................................................................................................................................... 62 Indoor Unit Addressing
Part IV
Commands Reference
8
................................................................................................................................... 81 Cool Master Commands
.......................................................................................................................................................... 8alloff
.......................................................................................................................................................... 8allon
.......................................................................................................................................................... 9boot
.......................................................................................................................................................... 9cool
.......................................................................................................................................................... 9dry
.......................................................................................................................................................... 10heat
.......................................................................................................................................................... 10auto
.......................................................................................................................................................... 11fan
.......................................................................................................................................................... 11filt
.......................................................................................................................................................... 12fspeed
.......................................................................................................................................................... 12off
.......................................................................................................................................................... 13on
.......................................................................................................................................................... 14set
.......................................................................................................................................................... 14simul
.......................................................................................................................................................... 15stat
.......................................................................................................................................................... 16stat2
.......................................................................................................................................................... 17stat3
.......................................................................................................................................................... 18swing
.......................................................................................................................................................... 19temp
.......................................................................................................................................................... 20group
.......................................................................................................................................................... 20vam
Part V
Firmware Update
22
................................................................................................................................... 221 Entering bootloader mode
................................................................................................................................... 222 Firmware Download
................................................................................................................................... 233 Reboot
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