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Air and Water cooled inverter chillers and heat pump
D-EOMZC00105-17EN
Operation Manual
18/84
EWAD TZ - EWAD TZ B -EWWD VZ
Air and Water cooled inverter chillers and
heat pump
BUS LED
BUS LED
LON
Bacnet MSTP
Bacnet IP
Modbus
Solid Green
Ready for
Communication. (All
Parameter loaded,
Neuron configured).
Doesn't indicate a
communication with other
devices.
Ready for
Communication. The
BACnet Server is started.
It doesn't indicate an
active communication
Ready for
Communication. The
BACnet Server is started.
It doesn't indicate an
active communication
All Communication
running
Solid
Yellow
Startup
Startup
Startup. The LED stays
yellow until the module
receives a IP Address,
therefore a link must be
established.
Startup, or one configured
channel not
communicating to the
Master
Solid Red
No Communication to
Neuron (internal error,
could be solved by
downloading a new LON
application)
BACnet Server down.
Automatically a restart
after 3 seconds are
initiated.
BACnet Server down.
Automatic restart after 3
seconds is initiated.
All configured
Communications down.
Means no communication
to the Master. The timeout
can be configured. In case
that the timeout is zero the
timeout is disabled.
Flashing
Yellow
Communication not
possible to the Neuron.
The Neuron must be
configured and set online
over the LON Tool.
3.6 Controller maintenance
The controller requires to maintain the installed battery. Every two years it’s required to replace the battery.
Battery model is: BR2032 and it is produced by many different vendors.
To replace the battery remove the plastic cover of the controller display using a screw driver as shown in the
following pictures:
Be careful to avoid damages to the plastic cover. The new battery shall be placed in the proper battery holder
which is highlighted in the following picture, respecting the polarities indicated into the holder itself.
3.7 Optional Remote User Interface
As an option an external Remote HMI can be connected on the UC. The Remote HMI offers the same features
as the inbuilt display plus the alarm indication done with a light emitting diode located below the bell button.
The Remote can be ordered with the unit and shipped loose as a field installed option. It can also be ordered
any time after chiller shipment and mounted and wired on the job as explained on the following page. The
remote panel is powered from the unit and no additional power supply is required.
All viewing and setpoint adjustments available on the unit controller are available on the remote panel.
Navigation is identical to the unit controller as described in this manual.