It seems that it can't establish communication to your access point.
Nintendo Forum explanation:
Wii Error Code Group: 52020, 52021, 52022Summary: Connection difficulty with either router or modem.
If automatic configuration is not working (it expects DHCP to anser; i.e. to get an assigned IP address) try manual configuration. Enter the values as you would on your PC to connect to the network.
Consult the Nintendo Forums for detailed help.
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