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Air cooled inverter water chiller
OPERATION
MANUAL
Operation Manual
64
EWAD TZ B 160-700
Air cooled inverter water chiller
D-EOMAC00909-16EN
cables.
There is a short-circuit on the unit.
Check for correct electrical isolation
condition of each unit’s circuit with a
Megger tester.
6.1.4.2 Evaporator Leaving Water Temperature (LWT) sensor fault
This alarm is generated any time that the input resistance is out of an acceptable range.
Symptom
Cause
Solution
Unit status is Off.
All circuits are stopped with a normal
shutdown procedure.
Bell icon is moving on controller’s
display.
String in the alarm list:
UnitOffLvgEntWTempSen
String in the alarm log:
UnitOffLvgEntWTempSen
String in the alarm snapshot
UnitOffEvpLvgWTempSen
Sensor is broken.
Check for sensor integrity.
according table and allowed kOhm
(k) range.
Check correct sensors operation
Sensor is shorted.
Check if sensor is shorted with a
resistance measurement.
Sensor is not properly connected
(open).
Check for absence of water or
humidity on electrical contacts.
Check for correct plug-in of the
electrical connectors.
Check for correct sensors wiring also
according electrical scheme.
6.1.4.3 Emergency Stop
This alarm is generated any time the Emergency Stop button is activated.
Before resetting the Emergency Stop button please verify that the harmful condition has been
removed.
Symptom
Cause
Solution
Unit status is Off.
All circuits are stopped immediately.
Bell icon is moving on controller’s
display.
String in the alarm list:
UnitOffEmergencyStop
String in the alarm log:
UnitOffEmergencyStop
String in the alarm snapshot
UnitOffEmergencyStop
Emergency stop button has been
pushed.
Turning counterclockwise the
emergency stop button, the alarm
should be cleared.
Emergency stop button is not pushed
Check electrical connection between
the button and the controller.
6.1.4.4 OptionCtrlrCommFail
This alarm is generated in case of communication problems with the AC module.
Symptom
Cause
Solution
Unit status is Off.
All circuits are stopped immediately.
Bell icon is moving on controller’s
display.
String in the alarm list:
OptionCtrlrCommFail
String in the alarm log:
OptionCtrlrCommFail
String in the alarm snapshot
OptionCtrlrCommFail
Module has no power supply
Check the power supply from the
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
Module address is not properly set
Check if module’s address is correct
referring to the wiring diagram.
Module is broken
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
Bekijk gratis de handleiding van Daikin EWAD620TZPLB, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWAD620TZPLB |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11976 MB |
