Trane SCWM Series User Manual

84
PKG-SVX027D-EN
Table 25. General unit alarming (continued)
Notification Class Action Reason
Typical Causes Reset Required
HVAC Critical Alarm. Unit will shut down and be
prevented from operating
until the sensor is in a normal
state.
The local auto/stop value has
been commanded to the local
stop command.
Emergency stop binary input
is open.
None, alarm clears once
sensor is in a normal state.
Discharge Air Temperature (In Fault)
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 temperature sensor is
reading either above is
maximum value or below is
minimum value, resulting in a
Fault Condition after 3 point
updates.
• Sensor is not wired
properly: Verify sensor
wiring to the XM
Module.
• XM Module is not
communicating. Ensure
that the XM Module is
up and talking to the
UC600.
• Sensor has Failed.
Verify if sensor has any
resistance on it, should
be 8-12k of resistance
on the thermistor.
None, alarm clears once
sensor is in a normal state.
Diagnostic: Discharge Air Temperature Source Failure (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 temperature sensor is
reading either above is
maximum value or below is
minimum value, resulting in a
Fault Condition after 3 point
updates.
• Sensor is not wired
properly: Verify sensor
wiring to the XM
Module.
• XM Module is not
communicating. Ensure
that the XM Module is
up and talking to the
UC600.
• Sensor has Failed.
Verify if sensor has any
resistance on it, should
be 8-12k of resistance
on the thermistor.
Manual Reset Required once
the issue is resolved. User
must toggle the Alarm Reset
value.
Diagnostic: Discharge Air Low Temperature Source Failure (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 discharge air
temperature is less than or
equal to the Discharge Air
Low Temperature Cutout for
10 minutes.
Cold entering air to the unit. Manual Reset Required once
the issue is resolved. User
must toggle the Alarm Reset
value.
Diagnostics

Trane SCWM Series Specifications

General

Brand	Trane
Model	SCWM Series
Category	Industrial Equipment
Language	English