Liebert DM Series User Manual page 37

30 Chapter 5 Micro-Processing Controller

Note
1. The latest alarm SN is the biggest number. Press the Up or Down button to scroll through the alarm status records if more than
one alarm is activated.
2. The alarm status records will be automatically cleared upon system power-off.
Alarm History
The Alarm History menu is used to view the historical alarm record of the AC unit, including XX/YY, alarm type, alarm
start time and alarm end time (if the alarm is not ended, the screen displays Not Ended Yet), as shown in Figure 5-10.
XX is the serial number of the historical alarm record and YY is the total number of the historical alarm records.

Note
1. Press the Up or Down button to scroll through the historical alarm records if more than one alarm is activated.
2. Up to 200 historical alarm records can be stored. They will not be cleared upon system power-off.
Alarm Setting
The Alarm Setting settings will not be lost when the power fails. The Alarm Setting screen is shown in Figure 5-11.
For detailed setting ranges, refer to Appendix 2 Parameter Setting Table.

Note
It is not recommended to change the defaults. If the change is necessary, change them under the guidance of the trained
professionals.
Active:
Hi Temp
2012/01/01
Figure 5-9 Active Alarm screen
History:
Hi Temp
2012/01/01
2012/01/01
Figure 5-10 Alarm History screen
°
Hi Temp 30.0 C Air Diff
°
Lo Temp 18.0 C Hi Press
Hi Hum 60.0% Lo Press
Lo Hum 40.0% Dschg Temp
Hum Fail ENAB Dschg Lock
Temp Snsr ENAB Water UF
HP Lock ENAB Power Lost
LP Lock ENAB Power OV
Customer1 ENAB Press Snsr
T/H Card ENAB Hum Snsr
Air Lost ENAB Air Lost Snsr
Customer2 ENAB Cstmr1Polar
Figure 5-11 Alarm Setting screen
New Liebert_DM Series Air Conditioner User Manual
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°
15.0 C Hi Temp ENAB
ENAB Lo Temp
ENAB Hi Hum
ENAB Lo Hum
Power LV ENAB
ENAB
ENAB Power FS ENAB
ENAB Power PL ENAB
ENAB Power PR ENAB
ENAB
Cstmr2Polar
ENAB ComAlmPolar
ENAB
ClearAlmHis
NC
ENAB
ENAB
ENAB
NC
NO
N