Daikin app controller firmware update from 1.19.0 to 2.8.0, now it is broken!

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The indoor unit usually has no dedicated circuit breaker as it is usually directly connect to the outdoor unit.

The wiring is showm in the last picture of this first post. One wire is the control signal between indoor and outdoor unit.

Daikin remote control

Hello, I have a couple of Daikin units I would like to automate. I could buy Daikin WiFi extensions, but they are quite expensive and my units lack the S20 socket, so I would also need an adapter, so I opted for DIY devices using the ESPHome IR remote climate component. Looking around the web it seems that everybody have devices externally powered, instead I would like to keep them inside the Daikin units. My idea is to buy a couple of Sonoff Mini R2, flash them with ESPHome custom firmware and…