Trane SCWM Series Installation, Operation And Maintenance Manual page 78

Diagnostics
Table 31. General unit alarming (continued)
Diagnostic: Discharge Air Temperature Source Failure (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: Discharge Air Temperature Source Failure (In Alarm)
Notification Class
Unit will shut down and be
prevented from running
HVAC Critical Alarm.
until this sensor is in a
normal state.
Duct Static Pressure Failure (In Fault)
Notification Class
Unit will shut down and be
prevented from running
HVAC Critical Alarm.
until this sensor is in a
normal state.
Diagnostic: Duct Static Pressure Failure (In Fault)
Notification Class
Unit will shut down and be
prevented from running
HVAC Critical Alarm.
until this sensor is in a
normal state.
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Action Reason
The temperature sensor is
reading either above its
maximum value or below is
minimum value, resulting in
a Fault Condition after 3
point updates.
Action Reason
The discharge air
temperature is less than or
equal to the Discharge Air
Low Temperature Cutout for
10 minutes.
Action Reason
The Pressure sensor is
reading either above its
maximum value or below is
minimum value, resulting in
a Fault Condition after 3
point updates.
Action Reason
The Pressure sensor is
reading either above its
maximum value or below is
minimum value, resulting in
a Fault Condition after 3
point updates.
Typical Causes
• Sensor is not wired
properly: Verify sensor
wiring to the XM Module.
• XM Module is not
Manual Reset Required once
communicating. Ensure that
the issue is resolved. User
the XM Module is up and
talking to the UC600. must toggle the Alarm Reset
• Sensor has Failed. Verify if
value.
sensor has any resistance
on it, should be 8-12k of
resistance on the
thermistor.
Typical Causes
Manual Reset Required once
the issue is resolved. User
Cold entering air to the Unit.
must toggle the Alarm Reset
value.
Typical Causes
• Sensor is not wired
properly: Verify sensor
wiring to the XM Module.
• XM Module is not
communicating. Ensure that
None, alarm clears once
the XM Module is up and
talking to the UC600. sensor is in a normal state.
• Sensor has Failed. Use the
Pressure Transducer
Troubleshooting guide in the
IOM to diagnose if the
sensor is operating properly.
Typical Causes
• Sensor is not wired
properly: Verify sensor
wiring to the XM Module.
• XM Module is not
Manual Reset Required once
communicating. Ensure that
the issue is resolved. User
the XM Module is up and
talking to the UC600. must toggle the Alarm Reset
• Sensor has Failed. Use the
value.
Pressure Transducer
Troubleshooting guide in the
IOM to diagnose if the
sensor is operating properly.
Reset Required
Reset Required
Reset Required
Reset Required
PKG-SVX027A-EN