Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual page 27

6. Press to return to the check programme.
◁
The display shows the check programme.
7. Press to exit the check programme.
◁
OFF is shown in the display.
◁
The display changes to show the check pro-
grammes.
8. Press the button 2 times to exit the check
programme.
◁
The End message appears in the display.
◁
The display switches to the basic display.
0020253094_05 ecoTEC sustain Installation and maintenance instructions
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