AIRSYS UNICOOL 11V1T3 - Alarm History; Clearing Alarm History

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AL*143
Low Superheat Alarm
Auto reset
AL*144
Low Evaporator Temperature Alarm
Auto reset
AL*145
High Evaporator Temperature Alarm
Auto reset
AL*146
Low Suction Pressure
Auto reset
AL*147
EEV Alarm
Auto reset
AL*148
Emergency Ventilation Active
Auto reset
AL*149
Out of Envelope
Auto reset
AL*159
Air Filter Pressure Differential Alarm
Auto reset
If the Alarm button is illuminated, press it at the main screen to display current active alarms. The code
identifying the system alarm will display on the screen of the user terminal. Press Up or Down to scroll
through all active alarms. Press Esc to return to the main screen.
Alarm History
The controller stores up to 200 alarms which are individually timestamped and can be viewed in the Alarm
History.
To access the alarm history, perform the following steps:
1. Hold the Esc button until the main screen is displayed.
2. Press Prg and enter the password (0004). Press Enter.
3. Press Down until the cursor is over “Alarm Logs” and press Enter.
4. Press Up or Down to scroll through the alarm logs.
Figure 31: Alarm Logs
Clearing Alarm History
At significant points such as during preventative maintenance, it may be desired to clear the alarm history.
Warning. Alarm history is collected because it can be very helpful in identifying a problem with the
system. The alarm history should never be arbitrarily cleared by an operator. Only AAST should
clear the alarm history after all the alarms stored in history have been recorded.