I replaced my old Panasonic Econavi of 7 years old with Panasonic Inverter Aero Series CS U13KVH. I installed it together with Panasonic Wifi Controller CZ-TACG1.
I bought the wifi controller because I want to control my aircond from my smartphone and and can get errors notifications or problems with the aircond.
The mobile application allows you:
1) Set Timers
2) Control aircond temperature, switch on and off
3) Monitor the aircond power consumption
4) Monitor possible errors with the aircond