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5.4.3 Failed Pumpdown
This alarm is generated to indicate that the circuit hadn’t been able to remove all the refrigerant from the evaporator. It
automatically clear as soon as the compressor stops just to be logged in the alarm history. It may not be recognized from
BMS because the communication latency can give enough time for the reset. It may not even be seen on the local HMI.
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.
Reset
Notes
Local HMI
Network
Auto
5.4.4 Fan Fault
This alarm indicates that at least one of the fans could has some problems
Symptom
Cause
Solution
Circuit status is On.
The compressor keep operating as
normal.
Bell icon is moving on controller’s
display.
String in the alarm list:
Cx FanAlm
String in the alarm log:
Cx FanAlm
String in the alarm snapshot
Cx FanAlm
At least one of the fan has some
problems
In case of on/off fan check the thermal
magnetic circuit breaker of each fan.
The fan could absorbs too much
current.
In case of fan with VFD check the
alarm output of the and message error
provided by each fan VFD.
Reset
Notes
Local HMI
Network
Auto
5.4.5 Gas Leakage Sensor fault
This alarm is generated to indicate that the sensor is not reading properly.
Symptom
Cause
Solution
Circuit status is On.
Bell icon is moving on controller’s
display.
String in the alarm list:
Cx GasLeakSen
String in the alarm log:
Cx GasLeakSen
String in the alarm snapshot
Cx GasLeakSen
Sensor is broken.
Check for sensor integrity.
Check correct sensors operation
according information about mVolt
(mV) range related to ppm values.
Sensor is shorted.
Check if sensor is shorted with a
resistance measurement.
Sensor is not properly connected
(open).
Check for correct installation of the
sensor.
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 electrical scheme.
Reset
Notes
Local HMI
Network
Auto
Bekijk gratis de handleiding van Daikin EWYS5004Z, 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 | EWYS5004Z |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 7564 MB |
