My home network configuration consists of:

• 3 TL-PA4010 power-line adaptors
  • one connected to my router, which is configured to use 192.168.0.X for my home network
  • one connected to a Solarmax inverter which by design has a fixed IP address (192.168.0.123) - this address is reserved in my router config
  • one connected to a network switch which has a PC and a raspberry Pi both of which get their IP address from the router (DHCP)
• TL-WA854 WiFi extender

Most other devices in the house connect via WiFi - either to the router's AP or to the extender and therefore get their IP address from the router (via DHCP).

This config works well apart from the TL-WA854 which has been dropping its link to the router regularly so I decided to replace it and one of the power-line adaptors, both of which are plugged into adjacent mains sockets, with a TL-WPA4220 thus providing a neater and hopefully more robust WiFi extender solution. However, I find the Solarmax inverter no longer appears on my network. I can't ping it from anywhere on my network. If I look at the log files on the TL-WPA4220's web interface there's no messages about DHCP server activity which some other threads have mentioned.

If I reconnect the Solarmax to a TL-PA4010, I can see it on my network once again.

Anyone have any idea as to why the TL-WPA4220 doesn't play nicely with kit that has a fixed IP address?

Thanks.