Trane SCWM Series Installation, Operation And Maintenance Manual page 79

Table 31. General unit alarming (continued)
Diagnostic: Software High Duct Static Alarm (In Alarm)
Notification Class
Unit will shut down and be
prevented from running
HVAC Critical Alarm.
until this sensor is in a
normal state.
Diagnostic: Condenser Water Flow Loss (In Alarm)
Notification Class
The Compressors will be
shut down and prevented
HVAC Critical Alarm.
from running until the
condition is resolved.
Note: These alarms are generated by sensors on the unit not related to the Fans or Compressors and will shut down the unit.
Table 32. General unit warning
Diagnostic: Dirty Air Filter (In Alarm)
Notification Class
No action taken other than
HVAC Service Required. to notify end user of
condition.
Diagnostic: Dirty Air Filter (In Alarm)
Notification Class
No action taken other than
HVAC Service Required. to notify end user of
condition.
PKG-SVX027A-EN
Action Reason
The Duct Static Pressure
sensor is reading above the
Duct Static Pressure Safety
Lockout Setpoint.
Action Reason
The Condenser Water Flow
Switch input is open
indicating a no water flow
condition.
Action Reason
The Filter differential
pressure is greater than the
Dirty Air Filter DP Setpoint.
Action Reason
The Condenser Tee
differential pressure is
greater than the Condenser
Tee Strainer Diff Pressure
Alarm Setpoint for 1 minute.
Typical Causes
Manual Reset Required once
• VAV Boxes are closed down
• Restriction in ductwork
the issue is resolved. User
must toggle the Alarm Reset
value.
Typical Causes
Manual Reset Required once
• Pumps not running
• Valves are closed
the issue is resolved. User
• Strainer is plugged.
must toggle the Alarm Reset
value.
Typical Causes
Manual Reset Required once
• Filters are dirty.
• Fan speed is too great.
the issue is resolved. User
• Failed Pressure sensor.
must toggle the Supply
Failure Reset
Typical Causes
• Failed Pressure sensor.
Manual Reset Required once
• Strainer is dirty
the issue is resolved. User
must toggle the Supply
Failure Reset
Diagnostics
Reset Required
Reset Required
Reset Required
Reset Required
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