Handleiding
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Bell icon is moving on controller’s
display.
String in the alarm list:
UnitOff HRFreeze
String in the alarm log:
± UnitOff HRFreeze
String in the alarm snapshot
UnitOff HRFreeze
Inlet temperature to the heat recovery
is too low.
Increase the inlet water temperature.
Sensor’s readings (entering or
leaving) are not properly calibrated
Check the water temperatures with a
proper instrument and adjust the
offsets
Reset
Notes
Local HMI
Network
Auto
5.3.11 OptionCtrlrCommFail
This alarm is generated in case of communication problems with the AC module.
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:
OptionCtrlrCommFail
String in the alarm log:
± OptionCtrlrCommFail
String in the alarm snapshot
OptionCtrlrCommFail
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
Reset
Notes
Local HMI
Network
Auto
5.3.12 Power Fault (only units with the UPS option)
This alarm is generated when the main power is Off and the unit controller is powered by the UPS.
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:
Power Fault
String in the alarm log:
± Power Fault
String in the alarm snapshot
Power Fault
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 to 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
phase is into the allowed range that is
indicated on the chiller label.
Is important to check the voltage level
on each phase 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.
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 |
