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Local HMI
Network
Auto
6.5.9
Suction Temperature Sensor fault
This alarm is generated to indicate that the sensor is not reading properly.
Symptom
Circuit status is Off.
The circuit is switched off with the normal
shutdown procedure.
Bell icon is moving on controller's display.
String in the alarm list:
CxCmp1 OffSuctTempSen
String in the alarm log:
CxCmp1 OffSuctTempSen
String in the alarm snapshot
CxCmp1 OffSuctTempSen
Reset
Local HMI
Network
Auto
6.6 Circuit Rapid Stop Alarms
6.6.1
Compressor Extension Communication Error (W/C units only)
This alarm is generated in case of communication problems with the CCx module.
Symptom
Circuit status is Off.
All circuits are stopped immediately.
Bell icon is moving on controller's display.
String in the alarm list:
Cx OffCmpCtrlrComFail
String in the alarm log:
Cx OffCmpCtrlrComFail
String in the alarm snapshot
Cx OffCmpCtrlrComFail
Reset
Local HMI
Network
Auto
6.6.2
EXV Driver Extension Communication Error (W/C units only)
This alarm is generated in case of communication problems with the EEXVx module.
Symptom
Circuit status is Off.
All circuits are stopped immediately.
Bell icon is moving on controller's display.
String in the alarm list:
Cx OffEXVCtrlrComFail
String in the alarm log:
Cx OffEXVCtrlrComFail
String in the alarm snapshot
Cx OffEXVCtrlrComFail
EWAD TZ - EWAD TZ B - EWWD VZ
Air and Water cooled inverter chillers
and heat pump
Air and Water cooled inverter chillers and heat pump
Cause
Sensor is shorted.
Sensor is broken.
Sensor is not good connected (open).
Cause
Module has no power supply
Module address is not properly set
Module is broken
Cause
Module has no power supply
Module address is not properly set
Module is broken
Solution
Check for sensor integrity.
Check
correct
sensors
according information about kOhm (k)
range related to temperature values.
Check if sensor is shorted with a
resistance measurement.
Check for correct installation of the sensor
on refrigerant circuit pipe.
Check for absence of water or humidity on
sensor electrical contacts.
Check for correct plug-in of the electrical
connectors.
Check for correct sensors wiring also
according with electrical scheme.
Notes
Solution
Check
the
power
supply
connector on the side of the module.
Check if LEDs are both green.
Check if the connector on the side is tightly
inserted in the module
Check if module's address is correct
referring to the wiring diagram.
Check if LED are on and both green. If
BSP LED is solid red replace the module
Check if power supply is ok but LEDs are
both off. In this case replace the module
Notes
Solution
Check
the
power
supply
connector on the side of the module.
Check if LEDs are both green.
Check if the connector on the side is tightly
inserted in the module
Check if module's address is correct
referring to the wiring diagram.
Check if LED are on and both green. If
BSP LED is solid red replace the module
D-EOMZC00105-17EN
Operation Manual
71/84
operation
from
the
from
the
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