AO Smith Enevator Store CAWH 8-455-6 Manuel D'installation, D'utilisation Et D'entretien page 62

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Restore default
From the Main menu, you can open the Restore Default submenu. On the Restore
Default submenu you can restore the settings to the factory default settings.
Fig. Display - Restore default
Press [Yes] to confirm or [No] to return to the previous screen.
Installation, Maintenance and Service part