3005167-2022-02-02 Menu 8 - Service Do not open Operation the service doors before the supply voltage has been disconnec- ted at the isolation switch. The isolation switch is positioned on the left side of the connection box on top of the unit. Weekly plan It is important to set ventilation to OFF when the weekly plan is active: Set ventilation to OFF NB - If the HMI panel shows 0% (VEX is inactive) and the unit is operating to a weekly plan when servicing begins, there is a risk that the program may change via a timer operation and re-start the VEX unit. ● Log onto technician menu, using password 1111 ● Change to manual operation via menu 1 ● Change back to user menu ● The icon for manual operation appears in the right-hand corner of the menu ● Press the OK button twice ● Use the arrow keys to adjust ventilation to 0% ● Press OK ● OFF will now appear on the display next to the ventilation icon 21 °C 0% 29-05-2009 14:32 23 °C 0% 29-05-2013 14:32 23 °C OFF 29-05-2013 14:32 56/108
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