electronic brain surgery since 2001

Connecting a Split AC to WiFi/Tuya

AC in Tuya We recently bought a Bomann CL 6046 QC CB split inverter air conditioning. It comes with WiFi connectivity and of course I wanted it to be integrated into Home Assistant.

The AC is one of those cheap Chinese ones that are sold under various brand names (TLC and Daikin seem to be similar). All of them use the Tuya Smart Life app and as always with these things the first connection is a PITA.

According to the manual you should press ECO six times to get the AC into pairing mode. But that didn't work at all for me. Here is what worked:

  1. disable your 5GHz WiFi, all the cheap Tuya stuff speaks 2.4GHz only
  2. open the front panel of the inside unit
    • the lower left and right sides can be pulled forward and come right off
    • the lower middle section needs a bit more convincing but also needs to be pulled forward
    • then the whole front panel can be swiveled upwards
  3. under the front panel is a small gray box – that's the WiFi module
    • it should have a couple of barcodes or serial number stickers
  4. turn on the AC
  5. press and hold the little black dot on the WiFi module (use a pen)
  6. now the display should switch to CF
  7. open the Tuya App (first time users probably need to register)
  8. click the plus and select “Add Device”
  9. select “Large Home Appliances”, “Air Conditioner Wi-Fi”
  10. pick your network and enter the passphrase
  11. click confirm the indicator is blinking… quickly
  12. after a while it should actually pick up your device
  13. don't forget to turn on 5GHz again

Easy, eh? From there the device should automatically show up in your Home Assistant's Tuya Devices.

BTW. in case you wonder how the quick connect lines work (because I did): The coolant tubes have some kind of valve at both ends and are pre-filled with pressurized coolant. When they are connected, the valve opens. Note that these connections can not be unscrewed again. It's some kind of one-time valve that is crimping itself tight.

ac, tuya, wifi, howto
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