====== HVAC ======

===== Haier =====

init.lua
<sxh python>
require("hvac")
hvac.begin("haier", true)
</sxh>

config.json
<sxh json>
    "serial": {
      "s1rx": 14,
      "s1tx": 27,
      "s2rx": 255,
      "s2tx": 255,
      "s0baud": 115200,
      "s1baud": 9600,
      "s2baud": 115200,
      "s1cfg": 28,
      "s2cfg": 28
    }
</sxh>
==== SmartAir2 ====

  * swing_mode: off/vertical/horizontal/both
  * mode: off/auto/heat/dry/fan/cool
  * fan_mode: low/medium/high/auto

==== hOn ====

  * swing_mode_horizontal: auto/max_left/left/center/right/max_right
  * swing_mode_vertical: auto/max_up/up/center/down/health_down