16 Troubleshooting
LED's do not light up
Cause
Measure
No power is being supplied to the AC WLAN.
Connect the power supply voltage.
No connection to the WLAN base station
Cause
Measure
The AC WLAN is located outside of the range the base station.
Reduce the distance between the devices.
The WLAN function of your AC WLAN is disabled.
Enable the WLAN function.
Another WLAN wireless network is causing malfunctions.
Switch to a different channel or set the channel to "auto".
The encryption is set to "WEP" or "unencrypted" on your AC WLAN.
Set the encryption method to WPA/WPA2 in the user interface.
The ESSID is set to "hidden".
To establish a connection using WEP, the ESSID must be "visible". Set the
ESSID to "visible". After a connection has been established, you can set the
ESSID back to "hidden".
Different encryption methods are set on the PC and on the AC WLAN.
Set the same encryption method on the PC as on the AC WLAN.
No connection between WLAN and PC
Cause
Measure
The WLAN adapter of the PC's is not ready for operation.
Check if the WLAN adapter is turned on; on some devices, you will need to
press a switch to turn it on.
The PC is located outside of the range of the AC WLAN.
Reduce the distance between the PC and the AC WLAN.
Different encryption methods are set on the PC and on the AC WLAN.
Set the same encryption method on the PC as on the AC WLAN.
Impossible to access devices in the network
Cause
Measure
A firewall is running on the devices.
Allow access to the network on the firewall.
Wrong address range/wrong network mask
Check if the addresses are set correctly.
The AC WLAN cannot be found at the IP address
Cause
Measure
You have enabled the DHCP client.
Try to find the device using the WLAN function.
The plain text display of the password and key does not work
Cause
Measure
You use Internet Explorer 9.
Disable all settings in the Compatibility View under Tools / Settings.
The diagrams are not shown
Cause
Measure
You use Internet Explorer 7 or 8.
You use Internet Explorer 7 or 8. Install an SVG plugin (e.g. from Adobe, found
at http://www.chip.de/downloads/Adobe-SVG-Viewer_15272819.html.
You use Internet Explorer 9.
Disable all Compatibility View settings under Tools/Settings.
Troubleshooting
Troubleshooting