Device maintenance and repair
7.3 Using the maintenance mode
Unified Comfort Panels
Operating Instructions, 03/2020, A5E46641217-AA
137
Operating system must be updated after startup with the "Maintenance" button
If you start the HMI device while pressing the "Maintenance" button, the HMI device is in
maintenance mode. The "Waiting for Operation" and then "Waiting for Connection" dialogs
are displayed in maintenance mode. The operating system
be updated. Even after
restarting, the HMI device remains in maintenance mode until the operating system has
been updated.
Only start the HMI device while pressing the "Maintenance" button if you are sure that you
want to update the operating system.
Procedure
Proceed as follows:
1. Turn off the power supply of the HMI device.
2. Press the "Maintenance" button. Use a blunt, sufficiently sturdy tool made of non-
conductive material, diameter approx. 5 mm.
You will find the "Maintenance" button in the opening between the two interfaces X1 and
X2.
Be sure to hit the button accurately and do not slide the tool off the button.
3. Switch on the power supply of the HMI device and keep the "Maintenance" button
pressed until the boot splash screen appears.
The HMI device restarts, the "Waiting for operation" and "Waiting for Connection" dialogs are
displayed. Connect the HMI device to a configuration PC and reset the HMI device to the
factory settings using the ProSave software. Follow the procedure from step 6 in the section
"Resetting an HMI device to factory settings via ProSave (Page 133)".
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