AIRSYS UNICOOL 28V1B5 - Page 63

System Operation
63
Code
Description
User/Auto Reset
AL*55
Supply Fan Overload
Auto reset
AL*56
High Pressure Alarm
Auto reset
AL*57
Low Pressure Alarm
Auto reset
AL*58
Low Pressure Limit Alarm
Auto reset
AL*59
Stuck Filter Alarm
Auto reset
AL*60
AFPD Protection Triggered
Auto reset
AL*61
High Supply Temperature Alarm
Auto reset
AL*62
Damper Alarm
Auto reset
AL*63
Low supply Temperature Alarm
Auto reset
AL*64
Expansion Board Offline
Auto reset
AL*65
Master Controller Offline
Auto reset
AL*68
Low delta pressure
Auto reset
AL*69
High Discharge Temperature Alarm
Auto reset
AL*142
Inverter Offline
Auto reset
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.
4.6.1 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.