Control Screen; On Screen; Normal Screen; Password Screen - Liebert DM Series User Manual

28 Chapter 5 Micro-Processing Controller
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Note
After changing the parameter, if you do not press the Enter button to validate the changed parameter, the change will be invalid.

5.5 Control Screen

5.5.1 ON Screen

After the AC unit is powered on, the LCD screen will display the ON screen, as shown in Figure 5-4.

5.5.2 Normal Screen

After the AC unit is powered on, the Normal screen will be displayed after 10 seconds (default) for heat startup delay
or through pressing the Enter button directly, as shown in Figure 5-5. The Normal screen displays the following
information: the current temperature and humidity, unit operation state (cooling, heating, dehumidifying, humidifying),
unit mode (single, lead, standby), unit operation status (running, standby, locked, off, sleep), alarm information and
current date & time.

5.5.3 Password Screen

Press the Enter button on the Normal screen, and the Password screen will appear, as shown in Figure 5-6.
Three levels of passwords are provided for accessing the menus. The detailed descriptions are listed in Table 5-2.
Password level
Level 1
Level 2
Level 3
For detailed operation on entering the password, refer to 5.4.2 Operation Example. If entering a wrong password,
you can only view the menu, but cannot change the settings. In this case, you can press the Esc button to return to
the Normal screen, and then press the Enter button to enter the Password screen again.
Figure 5-6 Password screen
User Initial password
General operator 0001
Maintenance personnel -
Factory technician -
New Liebert_DM Series Air Conditioner User Manual
Connecting
Please wait...
Figure 5-4 ON screen
°
21 C HEAT SIGL
50% HUM RUN
No alarm 0
2012/01/01 00:00
Figure 5-5 Normal screen
Password: 1***
Table 5-2 Password level
Browse all menu information. Only set temperature and
humidity setpoints (see Figure 5-12) and cannot change any
values and settings
Set all parameters
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Remark