Handleiding
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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
65
6.1.4.5 EXV Driver Error
This alarm is generated in case of communication problem with a exv driver module (EEXV1 or
EEXV2).
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:
Cx OffEXVCrtlrComFail
String in the alarm log:
Cx OffEXVCrtlrComFail
String in the alarm snapshot
Cx OffEXVCrtlrComFail
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
6.1.4.6 PVM alarm
This alarm is generated in case of problems with the power supply to the chiller.
Resolution of this fault requires a direct intervention on the power supply of this unit.
Direct intervention on the power supply can cause electrocution, burns or even death. This action
must be performed only by trained persons. In case of doubts contact your maintenance company.
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:
UnitOffPhaveVoltage
String in the alarm log:
UnitOffPhaveVoltage
String in the alarm snapshot
UnitOffPhaveVoltage
Loss of one phase.
Check voltage level on each of the
phases.
Not correct sequence connection of
L1,L2,L3.
Check sequence of L1, L2, L3
connections according indication on
chiller’s electrical scheme.
Voltage level on the unit’s panel is not
in the allowed range (±10%).
Check that voltage level on each
phases is into the allowed range that
is indicated on the chiller label.
Is important to check the voltage level
on each phases not only with chiller
not running, but mainly with chiller
running from minimum capacity up to
full load capacity. That's because
voltage drop can occur from a certain
unit cooling capacity level, or
because of certain working condition
(i.e. high values of OAT);
In these cases the issue can be
related with the sizing of power
cables.
There is a short-circuit on the unit.
Check for correct electrical isolation
condition of each unit’s circuit with a
Megger tester.
6.1.4.7 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.
No water flow sensed for 30 seconds
continuously or water flow too low.
Check the water pump filler and the
water circuit for obstructions.
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 |
