Not Receiving data 'No ACK from S1 for xx query'

[serimi89]

Hey and thanks a lot for your effort in making this available via ESPHome.

I am running into errors with regards to the UART comms, but that could possibly related to my hardware config. Just wanted to run this past you to see if it is a software issue.

The error im getting is:

[13:53:48][W][daikin_s21:265]: No ACK from S21 for F1 query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for F5 query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for RH query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for RI query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for Ra query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for RL query
[13:53:48][W][daikin_s21:265]: No ACK from S21 for Rd query

My hardware is a regular ESP32 module (not a faikin) that I have connected only to RX and TX of the AC unit. I have tried using a level shifter on the RX/TX to bring the output down from 5V to 3.3V but there is no difference in the output. Any clues?