Daikin EWAT_B User Manual

Operating Manual
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EWAT_B
String in the alarm list:
CxCmp1 OffDischTmpSen
String in the alarm log:
 CxCmp1 OffDischTmpSen
String in the alarm snapshot
CxCmp1 OffDischTmpSen
Sensor is broken.
Check if sensor is shorted with a
resistance measurement.
Sensor is not properly connected (open).
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.
Reset
Local HMI
Network
Auto



5.4.2 CxOff OffSuctTempSen - Suction Temperature Sensor fault
This alarm is generated to indicate that the sensor is not reading properly.
Symptom
Cause
Solution
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:
CxOff OffSuctTempSen
String in the alarm log:
 CxOff OffSuctTempSen
String in the alarm snapshot
CxOff OffSuctTempSen
Sensor is shorted.
Check for sensor integrity.
Check correct sensors operation
according information about kOhm (k)
range related to temperature values.
Sensor is broken.
Check if sensor is shorted with a
resistance measurement.
Sensor is not good connected (open).
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.
Reset
Local HMI
Network
Auto



5.4.3 CxOff GasLeakage - Gas Leakage fault
This alarm indicates a gas leakage in the compressor box.
Symptom
Cause
Solution
Circuit status is Off.
The circuit is switched off with the
shutdown procedure performing a deep
pumpdown of the circuit.
Bell icon is moving on controller’s display.
String in the alarm list:
CxOff GasLeakage
String in the alarm log:
 CxOff GasLeakage
String in the alarm snapshot
CxOff GasLeakage
Gas leakage in the compressors box (A/C
units).
Switch off the unit and perform a gas
leakage test.
Gas Leakage in the plant room.
Check if there are leakage on the unit with
a detector eventually starting suction fans
to change the air in the room.
Gas leakage sensor fault.
Put the sensor in open air and check that
the alarm can be cleared. In case replace
the sensor or disable the option before
getting a new part.
Reset
Local HMI
Network
Auto



5.5 Circuit Rapid Stop alarms
All alarms reported in this section produce an instantaneous stop of the circuit.
5.5.1 CxOff CondPressSen - Condensing Pressure sensor fault
This alarm indicates that the condensing pressure transducer is not operating properly.
Symptom
Cause
Solution

Daikin EWAT_B Specifications

General

Brand	Daikin
Model	EWAT_B
Category	Chiller
Language	English