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Air cooled inverter water chiller
OPERATION
MANUAL
Operation Manual
62
EWAD TZ B 160-700
Air cooled inverter water chiller
D-EOMAC00909-16EN
---------------------------------
kOhm (k) range related to
temperature values.
6.1.2.2 Evaporator Pump #1 Failure
This alarm is generated if the pump is started but the flow switch is not able to close.
Symptom
Cause
Solution
Unit could be ON.
Bell icon is moving on controller’s
display.
Backup pump is used or stop of all
circuits in case of pump #2 failure.
String in the alarm list:
EvapPump1Fault
String in the alarm log:
EvapPump1Fault
String in the alarm snapshot
EvapPump1Fault
Pump nr.1 may not be oerating.
Check for problem in electrical
wiring of the pump #1.
Check that electrical breaker of
pump #1 is tripped.
Check for problem in wiring
connection between pump starter
and unit controller.
Check the water pump filter and the
water circuit for obstructions.
Flow Switch doesn’t operate
properly
Check flow switch connection and
calibration.
6.1.2.3 Evaporator Pump #2 Failure
Symptom
Cause
Solution
Unit could be ON.
Bell icon is moving on controller’s
display.
Backup pump is used or stop of all
circuits in case of pump #1 failure.
String in the alarm list:
EvapPump2Fault
String in the alarm log:
EvapPump2Fault
String in the alarm snapshot
EvapPump2Fault
Pump nr.2 does not work.
Check for problem in electrical
wiring of the pump #1.
Check that electrical breaker of
pump #2 is tripped.
Check for problem in wiring
connection between pump starter
and unit controller.
Check the water pump filter and the
water circuit for obstructions.
Flow Switch doesn’t operate
properly
Check flow switch connection and
calibration.
6.1.3 Unit Pumpdown Stop Alarms
6.1.3.1 Evaporator Entering Water Temperature (EWT) sensor fault
This alarm is generated any time 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:
UnitOffEvpEntWTempSen
String in the alarm log:
UnitOffEvpEntWTempSen
String in the alarm snapshot
UnitOffEvpEntWTempSen
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.
6.1.3.2 Outdoor Ambient Temperature sensor fault alarm
This alarm is generated any time the input resistance is out of an acceptable range.
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Productinformatie
| Merk | Daikin |
| Model | EWAD620TZPLB |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11976 MB |
