Uc Controller - Lauda UC 2 Operation Manual

5.2 UC CONTROLLER

Controller buttons:
Alarm button: Displays the list of active alarms. It's also used to manually reset alarms
Prg button: Used to access the configuration menu (for authorized service only)
Esc button: Return to the main screen
Up – Down buttons: Navigate between the display screens or increase/decrease the value of a
selected parameter
Enter button: Used to enter a subscreen/menu from the main screen or to switch between
screen navigation and the different parameters that can be modified on a particular screen
Main screen:
The main screen shows the current outlet temperature, the current setpoint and it shows which motors in the
chiller are currently running.
The motor symbols are, from left to right, the water pump, the refrigerant compressor and the motor fan.
If a motor is running, its symbol is lit and if it is stopped, its symbol is not shown. A blinking symbol means that
an Off signal has been received, but the motor is still running and it will turn Off shortly, it is being delayed by
an internal minimum running time timer in the chiller's software.
From the main screen it's also possible to access the On/Off screen, the Settings screens loop and the
information screens loop. Use the Up/Down buttons to select the desired subscreen/menu and press Enter to
access it:
On/Off screen
Pressing Esc from any screen goes back to this main screen.
Settings screens loop
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Information screens loop