48
Troubleshooting
Alternately
blue and
yellow
flashing
Service message Confirm service
message (can be
switched off via
WebUI)
Alternately
blue and red
flashing
Alarm message
Confirm alarm
message (can be
switched off via
WebUI)
If the device LED is not lit, the CCU3 cannot be
started. If the LED does not light up after a minu-
te, restart the system again. If after several att-
empts the system still does not start, please start
the rescue system and install the update again.
8.2
Functional limitations
If the functional limitations or any behaviour that is de-
scribed in the WebUI Manual occur, it may be caused by
the settings of your web browser or additional security
tools that are installed on your PC (e.g. anti-virus software,
firewall or browser-protection add-ons).
In this case, you should include the IP address of your CCU3
into the exception list of your firewall or browser protection
(exceptions are made for the Windows firewall). Furthermo-
re, you should always call the IP address via the CCU3 (see
„7.2 Starting the WebUI user interface“ on page 39).
