PKG-SVX027C-EN
87
Table 32.
General unit alarming (continued)
HVAC Critical Alarm.
The Compressors will be
shut down and prevented
from running until the
condition is resolved.
The Condenser Water
Flow Switch input is open
indicating a no water flow
condition.
•
Pumps not running.
•
Valves are closed.
•
Strainer is plugged.
Manual Reset Required
once the issue is resolved.
User must toggle the
Alarm Reset value.
Diagnostic: Condenser Water Low Temperature Lockout (In Alarm)
Notification Class
Action
Reason
Typical Causes
Reset Required
HVAC Critical Alarm.
Unit will shut down and be
prevented from running
until this sensor is in a
normal state.
The Condenser Water
entering or leaving
temperature is below 35
degrees for 10 minutes.
•
Cold Outdoor
temperatures at
cooling tower.
•
Cold incoming air into
the unit.
Manual Reset Required
once the issue is resolved.
User must toggle the
Alarm Reset value.
Note:
These alarms are generated by sensors on the unit not related to the Fans or Compressors and will shut down the unit.
Table 33.
General unit warning
Diagnostic: Dirty Air Filter (In Alarm)
Notification Class
Action
Reason
Typical Causes
Reset Required
HVAC Service Required.
No action taken other
than to notify end user of
condition.
The Filter differential
pressure is greater than
the Dirty Air Filter DP
Setpoint.
•
Filters are dirty.
•
Fan speed is too
great.
•
Failed Pressure
sensor.
Manual Reset Required
once the issue is resolved.
User must toggle the
Filter Alarm Reset value.
Diagnostic: Dirty Condenser Tee Filter (In Alarm)
Notification Class
Action
Reason
Typical Causes
Reset Required
HVAC Service Required.
No action taken other
than to notify end user of
condition.
The Condenser Tee
differential pressure is
greater than the
Condenser Tee Strainer
Diff Pressure Alarm
Setpoint for 1 minute.
•
Failed Pressure
sensor.
•
Strainer is dirty.
Manual Reset required
once the issue is resolved.
User must toggle the
Alarm Reset value.
Condenser Water Entering Temperature (In Fault)
Notification Class
Action
Reason
Typical Causes
Reset Required
