Information and error messages indicated by the device LEDs
Power
Internet
State
LED
LED
Hardware starts
On
On
System start is
On
Off
running
Internet connec-
On
On
tion present
Service messa-
On
---
ges pending or
updates available
Update is being
Flashing
---
imported
quickly
Alarm messages
On
---
pending
No network
On
Off
connection
No IP address
On
Flashing
quickly
IP address pre-
On
Flashing
sent, no Internet
connection
Recovery system
Flashing
Flashing
started
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Info
Remedy
LED
On
If the LED does not exit this state,
start the recovery system (see
Section 10.2)
Flashing
If the LED does not exit this state,
quickly
start the recovery system (see
Section 10.2)
---
---
Flashing
Check the system messages in
WebUI or perform an update
Flashing
Please wait until the update has
quickly
been imported
Flashing
Check the system messages in
quickly
WebUI
---
Check your network cable and the
connection between the Central
Control Unit and router/switch
---
Check your network configura-
tion. If there is no DHCP server,
proceed as described in
Section 10.1.2
---
Check the network configuration of
your router
Flashing
Wait until the recovery system has
finished running
10 Notes on rectifying malfunctions
10.1 W ebUI is not loaded when the URL
http://homematic-ccu2 is entered
If you are not taken to the WebUI user interface when you enter
http://homematic-ccu2 in your web browser, there are various solu-
tions for rectifying the problem.
10.1.1 Entering the IP address of your Central Control Unit
Instead of http://homematic-ccu2, you can enter the IP address of
your Central Control Unit in your web browser in order to access
WebUI. There are two ways in which you can find out the IP
address of your Central Control Unit:
a) Displaying the IP address via the network settings
You can find out the IP address via the properties of your Central
Control Unit. To do this, proceed as follows:
• Open Windows Explorer. Click on Network.
• Select your Central Control Unit, right-click on it, and select
"Properties".
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