4.6 Appearance and button functions of controller
Defrost
M
Keyboard lock and unlock
If there is no operation within 60 seconds, the keyboard will be locked automatically. To
unlock press the “ “ key for five seconds until buzer sounds are heard.
Display backlight turn on or off
If there is no operation within 60 seconds, the display backlight will go off, press any key
to turn on the light.
Power On/Off
If on standby mode, press ” “ key to turn on the controller
If on power on mode, press “ “key to turn off the controller.
Mode Change
If under the power on mode , press”M” key to change the mode and choose between
heating, cooling and constant temperature.
10
Fig 8
Heating
Mode
Cooling
Mode
Constant Temp.
Mode
Inlet Water
Temp.
Keyboard is
Locked
Fan is running
Power On/Off
Changing the working
mode
Setting Water
Temp
Query the running
parameters
Water Pump is
Running
Outlet Water
Temp
Timer is
Working
Setting Time/
Timer
