Handleiding
Je bekijkt pagina 55 van 78
D-EOMAC01905-23_01EN- 55/78
Reset
Notes
Local HMI
Network
Auto
Please see note on the top.
5.3.2 Evaporator Flow Loss alarm
This alarm is generated in case of flow loss to the chiller to protect the machine against freezing.
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:
UnitOffEvapWaterFlow
String in the alarm log:
± UnitOffEvapWaterFlow
String in the alarm snapshot
UnitOffEvapWaterFlow
No water flow sensed for 3 minutes
continuously or water flow too low.
Check the water pump filler and the
water circuit for obstructions.
Check the flow switch calibration and
adapt to minimum water flow.
Check if pump impeller can rotate
freely and has no damages.
Check pumps protection devices
(circuit breakers, fuses, inverters,
etc.)
Check if water filter is clogged.
Check flow switch connections.
Reset
Notes
Local HMI
Network
Auto
5.3.3 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
to 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 to electrical scheme.
Reset
Notes
Local HMI
Network
Auto
5.3.4 Evaporator Water Freeze alarm
This alarm is generated to indicate that the water temperature (entering or leaving) has dropped below a safety limit.
Control tries to protect the heat exchanger starting the pump and letting the water circulate.
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:
UnitOffEvapWaterTmpLo
String in the alarm log:
± UnitOffEvapWaterTmpLo
String in the alarm snapshot
UnitOffEvapWaterTmpLo
Water flow too low.
Increase the water flow.
Inlet temperature to the evaporator is
too low.
Increase the inlet water temperature.
Flow switch is not working or no water
flow.
Check the flow switch and the water
pump.
Sensor’s readings (entering or
leaving) are not properly calibrated.
Check the water temperatures with a
proper instrument and adjust the
offsets
Wrong freeze limit setpoint.
The freeze limit has not been
changed as a function of glycol
percentage.
Reset
Notes
Bekijk gratis de handleiding van Daikin EWAH670TZXRB2, 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 | EWAH670TZXRB2 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11657 MB |
