Lauda RA 12, Operating Instructions Manual, Page: 26 / 52

26 / 52 Alpha 7/2022
7.3 General key functions and pilot lamps
Your Alpha Thermostat is easy to operate.
Enter Key

Switch from the current bath temperature display to the main
menu;

activates input, display flashes;

saves input, display ceases to flash and menu point is left.
/

Selection of sub menu or setting of numerical values.
Smart Decrement / Increment Button
Speeds up entry by moving the counting position to the left:
 Keys are pressed and held down.
Moves counting position to the right:

Switching one place to the right occurs by briefly (1 second)
releasing the key, followed by another pressing of the key.
(or 4 sec.)
 Most relevant settings are accepted automatically after ap-
proximately 4 seconds
or

the setting is accepted immediately pressing the <Enter> key.
and


Fault signal: Flashing red Alarm LED and acoustic signal.
 Heating is active when the yellow LED is lit.

Cooling is active. When the setpoint temperature is lowered, it
may take up to one minute before the blue LED is lit.