Alarms And Troubleshooting - Data Aire dap4 User Manual

Alarms
During an alarm condition, the status LED bar of the display will light up in red. The red
box on the main screen will indicate what alarm(s) is occurring. This table offers
assistance troubleshooting what may be causing the alarm.
Each alarm is logged in the History menu. This log is useful because it shows all alarms,
even ones that may have automatically reset. It records the name of the alarm, the date
and time when it occurred and the temperature and humidity readings.
Alarm Legends
- Warning - *Alarm offers a notification only
- Urgent - **Alarm will shut down effected functions like compressor or fan
- Critical - ***Alarm will cause complete unit shutdown
Alarm Screen Description &
Classification
Chilled Water Chilled water
Sensor Failure sensor failure
detected
*Warning
Return Air Return Air
Sensor Sensor failure
*Warning
Power UP Loss of power
Urgent/Critical
UPS is On UPS/alternate
Power On
Possible Causes
•
Chilled Water Sensor
input is enabled, but
no sensor is
connected.
•
Loose Connection
•
Faulty Sensor
•
Loose sensor
•
Faulty sensor
•
Incorrect settings on
the controller
•
Loss of power, can be
set to not
automatically restart
unit
•
Primary power is off
100
Corrective Actions
•
Go to Menu L –Configure I/O
and change the Chilled Water
Sensor (U10) Enable to Off
•
Check connection and cable
•
Use Temperature Sensor Chart
to verify resistance of sensor
and replace if necessary
•
Check connection
•
Use sensor chart to check
sensor, replace sensor if
required.
•
Go To Menu L – Configure I/O
and change the Return Air Temp
Sensor (U04) Enable to Off
•
Check power.
•
Check main power