Liebert DM User Manual page 52

Sensor calibration
The Sensor Calibration menu is shown in Figure 5-27.
Communication
The Communication menu is shown in Figure 5-28. For detailed setting ranges of the menu items, refer to Appendix
6 Parameter Setting Table.
Service mode
Select System Menu 2/2 -> Service Mode to enter the Service Mode menu, as shown in Figure 5-29.
The menu is used for the maintenance personnel to view whether the system is working normally.
The Diagnostic Mode, Commission Mode and Manual Mode menus have the same submenu. Taking Diagnostic
Mode menu as an example, the menu interface is shown in Figure 5-30.

Note
1. Under the commission mode and manual mode, the LLBP1, LLBP2 and HGBP are off.
2. Under the commission mode and diagnostic mode, after you press the ESC button to exit the mode, the system will restore the
normal control.
3. Under the manual mode, after you press the ESC button to exit the mode, all status can restore the normal control until the
controller is restarted after powered off.
Sensor Calibration [3]
Return Air TEMP: 00 C
Return Air HUM: 00%rH
Figure 5-27 Sensor Calibration interface
Communication [1]
Protocol: YDN23
Monitor ID: 001
Baud Rate: 9600
Figure 5-28 Communication interface
Service Mode [2]
Diagnostic Mode
Commission Mode
Manual Mode
Figure 5-29 Service mode interface
Diagnostic Mode [2]
Fan: Off Fill: Off Cool1:Off
DeHUM: Off HUM: Off Cool2: Off
LLBP1: Off
LLBP2: Off
HGBP: Off
Figure 5-30 Diagnostic mode interface
Liebert_DM 16kW Air Conditioner User Manual
Chapter 5 Precision Air Conditioner Controller
D01 I10
o
D01 I10
D01 I10
D01 I10
Heat1: Off
Heat2: Off
Reserve: Off
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