Liquid cooling system is managed by the controller module. It controls the working order of internal components and acceptable operating modes, gathers the data from the sensors installed inside the system and shows information on the built-in two-line display. The Controller Manual is applicable for controller firmware versions starting v.38.1.
Check the list of actual releases here
NOTE
To access Temperature Profiles menu press and hold PREV button. The active temperature profile will be shown.
To change the active profile hold the NEXT button for 2-3 seconds to enter the MENU. Select SERVICE: TEMP PROFILE by using NEXT and PREVIOUS buttons, hold NEXT button to open the selection menu. Submit the chosen profile by holding NEXT button.
See menu of version 1.0.25 here
Please refer to the firmware version that is installed on the Controller as the troubleshooting codes of firmware version 1.x.x. differ from the codes of the previous versions.