5 Operating and display functions10 Operating instructions multiMATIC 0020237615_024.3.2 Example, changing the display contrastAuto 5.0 °C°C19.5 15:34Desired heating temp. 20.0 °CMenu Op. mode1. Press the left-hand selection button Back until the basicdisplay appears in the display.2. Press the left-hand selection button Menu.◁ The system control switches to selection level 1.MenuInformationDesired temperaturesTimer programmesBack Select3. Turn the rotary knob until the list entry Basic settingsis highlighted.MenuPlanning days away from homePlanning days away from homeDays at home schedulingBasic settingsBasic settingsBack Select4. Press the right-hand selection button Select.◁ The system control switches to selection level 2.Basic settingsLanguageDate/timeDisplayBack Select5. Turn the rotary knob until the list entry Display is high-lighted.Basic settingsLanguageLanguageDate/timeDate/timeDisplayBack Select6. Press the right-hand selection button Select.◁ The system control switches to setting levelDisplay. The adjustable value for the Displaycontrast is highlighted.DisplayDisplay contrastButton lock9Back Change7. Press the right-hand selection button Change.◁ The highlighted value flashes.DisplayDisplay contrastButton lock9Cancel OK8. Turn the rotary knob to change the value.DisplayDisplay contrastButton lock12Cancel OK9. Press the right-hand selection button OK to confirm thechange.◁ The system control has saved the changed value.10. Press the left-hand selection button Back repeatedly togo back to the basic display.5 Operating and display functionsNoteThe functions described in this section are notavailable for all system configurations.Overview of operating modes and the end userlevelOperating modes (→ Page 23)End user level (→ Page 23)The path details given at the start of each function descrip-tion indicate how you reach this function in the menu struc-ture.The description of the functions for ZONE1 also applies forall available zones.