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D D i i a a g g n n o o s s t t i i c c s s
Table 29. Compressor alarming (continued)
Diagnostic: Compressor (1-4) Suction Pressure Sensor Failure (In Alarm)
Notification Class
HVAC Critical Alarm.
Diagnostic: Compressor (1-4) Suction Pressure Sensor Failure (In Fault)
Notification Class
HVAC Critical Alarm.
Diagnostic: Compressor (1-4) Suction Temperature Sensor Failure (In Alarm)
Notification Class
78
Action
Compressor will be locked
The Pressure sensor is
out and prevented from
calculated to be in fault
running until this
and the unit has locked
diagnostic is cleared.
out the compressor from
operation.
Action
Compressor will be locked
The Pressure sensor is
out and prevented from
reading either above is
running until this sensor is
maximum value or below
in a normal state.
is minimum value,
resulting in a Fault
Condition after 3 point
updates.
Action
Typical Causes
Reason
•
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.
Typical Causes
Reason
•
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.
Typical Causes
Reason
Reset Required
Manual Reset required
once the sensor is in a
Normal State. User must
toggle the Compressor
(1-4) Failure Reset.
Reset Required
None, alarm clears once
sensor is in a normal
state.
Reset Required
PKG-SVX027C-EN
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