Use MQTT and ESP8266/ESP32 module to control Mitsubishi HVAC unit.
based on SwiCago HeatPump library: https://github.com/SwiCago/HeatPump
and inspired by gysmo38 HA-integration: https://github.com/gysmo38/mitsubishi2MQTT
- Initial config: WIFI AP mode and web portal
- Web interface for configuration, status and control, firmware upgrade
- Wirenboard-compatible MQTT topics
- Mitsubishi AC unit (tested on MSZ-SF15VA, MSZ-SF20VA, MSZ-SF42VE, see full supported models list at SwiCago wiki)
- WeMos D1 Mini or any other ESP32/ESP8266 board capable to handle 5V power source
- Mitsubishi CN105 Cable (or analogue, i.e. https://nl.aliexpress.com/item/1005003232354177.html). CN105 pins order is: [12V, GND, 5V, Tx, Rx]
- Solder GND, 5V, Tx and Rx pinouts to your D1 Mini. Note that Rx of AC unit should be connected to Tx of the board. pic1, pic2, HiRes
- Full installation guide can be found here: https://chrdavis.github.io/hacking-a-mitsubishi-heat-pump-Part-1/
Web-interface
| Main Page | Control Page | Config Page |
|---|---|---|
 |
 |
 |
Wirenboard integration
| WB-device | WB mqtt topics |
|---|---|
 |
 |
- Step 1: flash the sketch with flash size include SPIFFS option.
- Step 2: connect to device AP with name HVAC_XXXX (XXXX last 4 character MAC address)
- Step 3: You should be automatically redirected to the web portal or go to 192.168.1.1
- Step 4: set Wifi information, save & reboot. Hvac will fall back to AP mode if WiFi connection fails (AP password sets to default SSID name from step 2).
- Step 5: find the device IP with last 4 character MAC address in your router
- Step 6: (optional): Set MQTT credentials for use with Wirenboard
| Num | Mode | Fan | Wane | Widevane |
|---|---|---|---|---|
| 0 | Auto | Auto | Auto | Swing |
| 1 | Dry | Quiet | Swing | << |
| 2 | Cool | 1 | 1 | < |
| 3 | Heat | 2 | 2 | | |
| 4 | Fan | 3 | 3 | > |
| 5 | - | 4 | 4 | >> |
| 6 | - | - | 5 | <> |