Emerson Liebert PEX+ Series User Manual page 8

6 Chapter 1 Precision Air Conditioner Controller
Alarm status
This menu is used to record all active alarm events, including Active Alarms (total alarm number), ALM (alarm SN.
and alarm type), and Time (alarm occurred time and resolved time), as shown in Figure 1-7.The controller can save up
to 100 alarm status records.
Note
The alarm status records will be cleared automatically upon power failure.
Alarm History
This alarm interface is used to query the history alarm records, including Current Alarms (total alarm number), ALM
(alarm SN. and alarm type), and Time (alarm occurred time and resolved time) as shown in Figure 1-8.
Note
When several alarms are generated, the alarm with biggest alarm SN is the latest alarm, and you can press the UP or DOWN key
to scroll through the alarms. The controller can store up to 200 history alarm records. They will not be cleared upon power
failure.
Alarm Reset
The Alarm Reset menu is shown in Figure 1-9. This menu is used to clear some important alarm status. The menu
items can be set to YES or NO (default). If the Reset HP1 Alarm menu item is set to YES, after HP1 alarm is
generated, its corresponding record in the Alarm Status menu will be cleared.
Figure 1-6 Alarm Menu interface
Figure 1-7 Alarm Status interface
Figure 1-8 Alarm History interface
Liebert. PEX+Series Precision Air Conditioner User Manual