78
PKG-SVX027C-EN
Table 29.
Compressor alarming (continued)
Diagnostic: Compressor (1-4) Suction Pressure Sensor Failure (In Alarm)
Notification Class
Action
Reason
Typical Causes
Reset Required
HVAC Critical Alarm.
Compressor will be locked
out and prevented from
running until this
diagnostic is cleared.
The Pressure sensor is
calculated to be in fault
and the unit has locked
out the compressor from
operation.
•
Sensor has lost its 5
Vdc Source Signal.
Verify that the sensor
has 5 Vdc.
•
Sensor is not wired
properly: Verify
wiring to the XM
Module.
•
XM Module is not
communicating.
Ensure that the XM
Module is up and
talking to the UC600.
•
System has no
charge: Verify that
the system has a
refrigerant charge.
•
Sensor has failed.
Manual Reset required
once the sensor is in a
Normal State. User must
toggle the Compressor
(1-4) Failure Reset.
Diagnostic: Compressor (1-4) Suction Pressure Sensor Failure (In Fault)
Notification Class
Action
Reason
Typical Causes
Reset Required
HVAC Critical Alarm.
Compressor will be locked
out and prevented from
running until this sensor is
in a normal state.
The Pressure sensor is
reading either above is
maximum value or below
is minimum value,
resulting in a Fault
Condition after 3 point
updates.
•
Sensor has lost its 5
Vdc Source Signal.
Verify that the sensor
has 5 Vdc.
•
Sensor is not wired
properly: Verify
wiring to the XM
Module.
•
XM Module is not
communicating.
Ensure that the XM
Module is up and
talking to the UC600.
System has no
charge: Verify
that the system
has a refrigerant
charge.
•
Sensor has failed.
None, alarm clears once
sensor is in a normal
state.
Diagnostic: Compressor (1-4) Suction Temperature Sensor Failure (In Alarm)
Notification Class
Action
Reason
Typical Causes
Reset Required
