Operation Manual

Standard display:

In MANUAL and AUTOMATIC operating mode, the display shows

the current temperature set-value (e.g. 23.5°C), the current day of the week, the

daylight saving time symbol (if activated) and a bargraph indicating the opening lev-

el of the valve.

There are three different operating modes: PROGRAMMING , AUTOMAT-

IC , MANUAL .

a) Switching between operating modes

When in AUTOMATIC mode or in MANUAL mode, press the “AUTO” button to

switch to the other operating mode. The operating mode is saved 5 seconds after

the “AUTO” button was pressed last.

Hold down the “PROG” button for about 3 seconds to select PROGRAMMING

mode. In PROGRAMMING mode, hold down the “AUTO” button for about 3 sec-

onds to return to the previous operating mode.

When programming mode is quit by pressing the “AUTO” button, the settings are

not saved (like a time-out). The settings will only be saved if programming mode is

quit by pressing the “PROG” button.

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Please note that when in PROGRAMMING mode, the actuator

goes back to the previous operating mode automatically (wit-

hout saving), if no button is pressed for more than 60 seconds.

b) Explanation of operating modes and functions

PROGRAMMING mode Symbol:

In PROGRAMMING mode, you can set switch-points for weeks, workdays, week-

ends, and days in setting mode. A setting for the four switch-points can be made for

every single day.