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Air cooled inverter water chiller
OPERATION
MANUAL
EWAD TZ B 160-700
Air cooled inverter water chiller
D-EOMAC00909-16EN
Operation Manual
67
Unit status is Off.
All circuits are switched off with the
normal shutdown procedure.
Bell icon is moving on controller’s
display.
String in the alarm list:
UnitOffExternalAlarm
String in the alarm log:
UnitOffExternalAlarm
String in the alarm snapshot
UnitOffExternalAlarm
There is an external event that has
caused the opening, for at least 5
seconds, of the port on the controller
board.
Check causes of the external event or
alarm.
Check electrical wiring from unit
controller to the external equipment in
case of any external events or alarms
have been occurred.
NOTE: What above applies in case of USER configuration of the external fault digital input as Alarm (see section
Errore. L'origine riferimento non è stata trovata.)
6.1.5 Circuit Warning Alarms
6.1.5.1 Failed Pumpdown
This alarm is generated to indicate that the circuit hadn’t been able to remove all the refrigerant
from the evaporator.
Symptom
Cause
Solution
Circuit status is Off.
No indications on the screen
String in the alarm list:
--
String in the alarm log:
Cx Failed Pumpdown
String in the alarm snapshot
Cx Failed Pumpdown
EEXV is not closing completely,
therefore there’s “short-circuit”
between high pressure side with low
pressure side of the circuit.
Check for proper operation and full
closing position of EEXV. Sight glass
should not show refrigerant flow after
the valve is closed.
Check LED on the top of the valve, C
LED should be solid green. If both
LED are blinking alternately the valve
motor is not properly connected.
Evaporating pressure sensor is not
working properly.
Check for proper operation of
evaporating pressure sensor.
Compressor on circuit is internally
damaged with a mechanical problems
for example on internal check-valve,
or on internal spirals or vanes.
Check compressors on circuits.
6.1.5.2 Economizer Temperature Sensor fault
This alarm is generated to indicate that the sensor is not reading properly.
Symptom
Cause
Solution
Circuit status is On.
Economizer is Off.
Bell icon is moving on controller’s
display.
String in the alarm list:
Cx EcoTempSen
String in the alarm log:
Cx EcoTempSen
String in the alarm snapshot
Cx EcoTempSen
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.
6.1.5.3 Economizer Pressure Sensor fault
This alarm is generated to indicate that the sensor is not reading properly.
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 |
