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