Error 203 – Subnet mask not set
The subnet mask for your sign’s networking information has not been set. Check the
Network Type information. If your network information is set automatically (
DHCP), this may indicate that the network server that handles this function is unavailable. If your network information is set manually (
Static), this indicates that this value wasn’t set correctly.
Reboot your sign by turning power off and then back on. If this does not resolve the issue, contact support.