Technical data

Chapter 5 Microprocessor Control 9
DataMate 3000 Series Air Conditioner Technical Manual
Chapter 5 Microprocessor Control
The microprocessor control features an easy-to-use menu-driven LCD display. It monitors and displays the operation
status of the precision cooling unit to maintain a reasonable environment in the controlled room. The menus, control
features and parameter settings are described in this chapter.
5.1 LCD Screen
LCD screen displays English menus with blue backlight. It displays temperature and relative humidity readings,
operating mode (cool, heat, dehumidify, humidify), alarm information, current date and time, as shown in Figure 5-1.
28
℃
Co o l
50 % r h Hum
H i gh Temp 1 / 4
2 0 04 / 01 / 01 0 0 : 0 0
Figure 5-1 LCD screen
Users can browse more detailed information such as the operation status of a certain part and alarm information by
activating the sub-menus in the main menu screen. The selected item will highlight in a menu. The digit to be changed
will highlight when a parameter is being changed.
5.2 Control Buttons
There are nine control buttons on the keypad, namely Up, Down, Left, Right, Enter, Esc, ON/OFF, Mute, and Help
buttons, as shown in Figure 5-2.
5 Down
9 Mute
1 ON/OFF
2 Help
3 Esc
4 Left
6 Enter
7 Right
8 Up
Figure 5-2 Control keypad
1. ON/OFF —— When the system is in standby status after power-on, pressing this button makes it operate, and LCD
displays the On screen. When the system is operating, pressing this button switch it to the standby status and LCD
displays the Off screen.
2. Help —— Pressing this button displays associated help screen.
3. Esc —— Pressing this button returns to the Normal screen or previous menu/screen or aborts any changes on the
input data field before validating the changes.
4. Left —— This button moves the cursor left in the input data field.
5. Down —— This button moves the cursor down the menu or decreases the number in the input data field.
6. Enter —— This button allows entry into the next level of a menu or validates the modified data in the input data field.
7. Right —— This button moves the cursor right in the input data field.
8. Up —— This button moves the cursor up on the menu or increases the value displayed in the input data field.
9. Mute —— If an alarm is present, it will be displayed on the LCD and sound an audible beeper. Pressing this button
eliminates the prompted alarm screen and silences the alarm.