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Air and Water cooled inverter chillers and heat pump
EWAD TZ - EWAD TZ B - EWWD VZ
Air and Water cooled inverter chillers
and heat pump
D-EOMZC00105-17EN
Operation Manual
17/84
indicating that a jump to the next level is required. Press the wheel to execute the jump. You will arrive at the
Status/ Settings link. There is an arrow indicating that this line is a link to a further menu. Press the wheel
again to jump to the next menu, Unit Status/Settings. Rotate the wheel to scroll down to Control Source and
read the result.
Example 2:
Change a Set point, the chilled water set point for example. This parameter is designated as Cool
LWT Set point 1 and is a unit set parameter. From the Main Menu select View/Set Unit. The arrow indicated
that this is link to a further menu. Press the wheel and jump to the next menu View/Set Unit and use the wheel
to scroll down to Temperatures. This again has an arrow and is a link to a further menu. Press the wheel and
jump to the Temperatures menu, which contains six lines of temperatures set points. Scroll down to Cool LWT
1 and press the wheel to jump to the item change page. Rotate the wheel to adjust the set point to the desired
value. When this is done press the wheel again to confirm the new value. With the Back button it will be
possible to jump back to the Temperatures menu where the new value will be displayed.
Example 3:
Clear an Alarm. The presence of a new alarm is indicated with a Bell ringing on the top right of
the display. If the Bell is frozen one or more alarm had been acknowledged but are still active. To view the
Alarm menu from the Main Menu scroll down to the Alarms line or simply press the Alarm button on the display.
Note the arrow indicating this line is a link. Press the wheel to jump to the next menu Alarms; there are two
lines here: Alarm Active and Alarm Log. Alarms are cleared from the Active Alarm link. Press the wheel to
jump to the next screen. When the Active Alarm list is entered scroll to the item AlmClr which is set to off by
default. Change this value to on to acknowledge the alarms. If the alarms can be cleared then the alarm counter
will display 0 otherwise it will display the number of alarm still active. When the alarms are acknowledged the
Bell on the top right of the display will stop to ring if some of the alarms are still active or will disappear if all
the alarms are cleared.
3.5 Basic Control System Diagnostic
MicroTech III controller, extension modules and communication modules are equipped with two status LED
(BSP and BUS) to indicate the operational status of the devices. The BUS LED indicates the status of the
communication with the controller. The meaning of the two status LED is indicated below.
Main Controller (UC)
BSP LED
Mode
Solid Green
Application running
Solid Yellow
Application loaded but not running (*) or BSP Upgrade mode active
Solid Red
Hardware Error (*)
Flashing Green
BSP startup phase. The controller needs time for starting.
Flashing Yellow
Application not loaded (*)
Flashing Yellow/Red
Fail safe mode (in case that the BSP upgrade was interrupted)
Flashing Red
BSP Error (software error*)
Flashing Red/Green
Application/BSP update or inizialization
(*) Contact Service.
Extension modules
BSP LED
Mode
BUS LED
Mode
Solid Green
BSP running
Solid Green
Communication running, I/O working
Solid Red
Hardware Error (*)
Solid Red
Communication down (*)
Flashing Red
BSP Error (*)
Solid Yellow
Communication running but parameter from the application
wrong or missing, or uncorrect factory calibration
Flashing Red/Green
BSP upgrade mode
Communication modules
BSP LED (same for all modules)
BSP LED
Mode
Solid Green
BPS running, communication with controller
Solid Yellow
BSP running, no communication with controller (*)
Solid Red
Hardware Error (*)
Flashing Red
BSP Error (*)
Flashing Red/Green
Application/BSP update
(*) Contact Service.