I installed a Daikin Sensira a few months ago and until recently it worked fine with the app. But since yesterday the air conditioner won't connect to WiFi, it keeps saying connection error. I've already done a reset but nothing. The 2.4GHz network works perfectly with other devices.
The Daikin Sensira sometimes has issues when WiFi slightly changes the channel or transmission power settings, especially after a few months of use. Try checking in the app panel to see if there's a firmware update available, because those often create weird incompatibilities. If it doesn't work, remove the Daikin from WiFi completely (from your router settings), wait about an hour, and then redo the pairing from scratch like it's the first time - maybe this time put your phone close to the air conditioner temporarily to make the initial connection easier. If the problem persists after all that, honestly it could be the WiFi module in the AC unit giving out, in which case it's worth contacting Daikin support for a replacement.
Log into answer.
