Trane SCWM Series Installation, Operation And Maintenance Manual page 86

Diagnostics
Table 25. General unit alarming (continued)
Diagnostic: Software High Duct Static Alarm (In Alarm)
Notification Class
HVAC Critical Alarm.
Diagnostic: Condenser Water Flow Loss (In Alarm)
Notification Class
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 26. General unit warning
Diagnostic: Dirty Air Filter (In Alarm)
Notification Class
HVAC Service Required.
Diagnostic: Dirty Condenser Tee Filter (In Alarm)
86
Action
Unit will shut down and be The Duct Static Pressure
prevented from running until sensor is reading above the
this sensor is in a normal Duct Static Pressure Safety
state. Lockout Setpoint.
Action
The Compressors will be The Condenser Water Flow
shut down and prevented 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 until entering or leaving
this sensor is in a normal temperature is below 35
state. degrees for 10 minutes.
Action
No action taken other than to The Filter differential
notify end user of condition. pressure is greater than the
Dirty Air Filter DP Setpoint.
Typical Causes
Reason
• VAV Boxes are closed
down.
• Restriction in ductwork.
Typical Causes
Reason
• 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.
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 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.
PKG-SVX027D-EN