EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers
EWLQ090G ÷ EWLQ720L - R410a - Condenser less
EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers
Water cooled scroll chillers & heat pump
Operation
Manual
EWWQ - EWLQ - EWHQ
Water cooled scroll chiller &heat
pump
D-EOMWC01203-15EN
Operation Manual
17
In the new page rotate the wheel or use button 4/5 to highlight the Network Ctrl and press the
wheel or the button 6 again to jump to the next menu where it is possible read the actual Control
Source.
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 Active
Setpt. The arrow indicated that there is a link to a further menu.
Press the wheel or button 6 and jump to the temperature setpoint page. Select Cool LWT 1 and
press the wheel or button 6 to jump to the item change page. Rotate the wheel or use buttons 4 / 5
to adjust the set point to the desired value. When this is done press the wheel or button 6 again to
confirm the new value. With the button ESC or 3 it will be possible to jump back to the main 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. Note the arrow
indicating this line is a link. Press the button 6 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
button 6 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
Unit 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.
UC BSP LED
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
BSP LED
Mode
Solid Green
BSP running
Solid Red
Hardware Error (*)
Flashing Red
BSP Error (*)
Flashing Red/Green
BSP upgrade mode
BUS LED
BUS LED
Mode
Solid Green
Communication running, I/O working