Haier Climate

This is an implementation of the ESPHome component to control HVAC on the base of the SmartAir2 and hOn Haier protocols (AC that is controlled by the hOn or SmartAir2 application).

There are two versions of the Haier protocol: the older version uses an application called SmartAir2 while the newer version uses an application called hOn. Both protocols are compatible on the transport level but utilize different commands to control appliances.

Older Haier models controlled by the SmartAir2 application are using the KZW-W002 module. This module can’t be reused, and you need to replace it with an ESP or RPI Pico W module. The USB connector on the board doesn’t support the USB protocol. It is a UART port that just uses a USB connector. To connect the ESP board to your AC you can cut a USB type A cable and connect wires to the climate connector.

Haier UART pinout

Board

USB

Wire color

ESP8266

5V

VCC

red

5V

GND

GND

black

GND

TX

DATA+

green

RX

RX

DATA-

white

TX
../../_images/usb_pinout.png

KZW-W002 module pinout

Newer Haier models using a module called ESP32-for-Haier. It is an ESP32 single-core board with an ESP32-S0WD chip. In some cases, you can reuse this module and flash it with ESPHome, but some new modules don’t support this. They look the same but have encryption enabled.

Warning! The new generation of ESP32-Haier devices has encryption enabled, so they can only be flashed with firmware that is signed with a private key. There is no way to make them work with ESPHome, so if you try to do it, the board will get into a boot loop with the error rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) The only way to recover this board is to flash it with the original image. So before starting your experiments make a backup image.

../../_images/haier_pinout.jpg

ESP32-for-Haier UART0 pinout

Also, you can use any other ESP32, ESP8266, or an RPI pico W board. In this case, you will need to cut the original wire or make a connector yourself (the board has a JST SM04B-GHS-TB connector)

This component requires a UART bus to be setup.

# Example configuration entry
climate:
  - platform: haier
    id: haier_ac
    protocol: hon
    name: Haier AC
    uart_id: ac_port
    wifi_signal: true
    display: true
    visual:
      min_temperature: 16 °C
      max_temperature: 30 °C
      temperature_step: 1 °C
    supported_modes:
    - 'OFF'
    - HEAT_COOL
    - COOL
    - HEAT
    - DRY
    - FAN_ONLY
    supported_swing_modes:
    - 'OFF'
    - VERTICAL
    - HORIZONTAL
    - BOTH
  supported_presets:
    - AWAY
    - BOOST
    - SLEEP
  on_alarm_start:
    then:
      - logger.log:
          level: WARN
          format: "Alarm activated. Code: %d. Message: \"%s\""
          args: [ code, message]
  on_alarm_end:
    then:
      - logger.log:
          level: INFO
          format: "Alarm deactivated. Code: %d. Message: \"%s\""
          args: [ code, message]
  on_status_message:
    then:
      - logger.log:
          level: INFO
          format: "New status message received, size=%d, subcmd=%02X%02X"
          args: [ 'data_size', 'data[0]', 'data[1]' ]

Configuration variables:

  • uart_id (Optional, ID): ID of the UART port to communicate with AC.

  • protocol (Optional, string): Defines communication protocol with AC. Possible values: hon or smartair2. The default value is smartair2.

  • wifi_signal (Optional, boolean): If true - send wifi signal level to AC.

  • answer_timeout (Optional, Time): Responce timeout. The default value is 200ms.

  • alternative_swing_control (Optional, boolean): (supported by smartAir2 only) If true - use alternative values to control swing mode. Use only if the original control method is not working for your AC.

  • status_message_header_size (Optional, int): (supported only by hOn) Define the header size of the status message. Can be used to handle some protocol variations. Use only if you are sure what you are doing. The default value: 0.

  • control_packet_size (Optional, int): (supported only by hOn) Define the size of the control packet. Can help with some newer models of ACs that use bigger packets. The default value: 10.

  • sensors_packet_size (Optional, int): (supported only by hOn) Define the size of the sensor packet of the status message. Can help with some models of ACs that have bigger sensor packet. The default value: 22, minimum value: 18.

  • control_method (Optional, list): (supported only by hOn) Defines control method (should be supported by AC). Supported values: MONITOR_ONLY - no control, just monitor status, SET_GROUP_PARAMETERS - set all AC parameters with one command (default method), SET_SINGLE_PARAMETER - set each parameter individually (this method is supported by some new ceiling ACs like AD71S2SM3FA)

  • display (Optional, boolean): Can be used to set the AC display off.

  • beeper (Optional, boolean): Can be used to disable beeping on commands from AC. Supported only by hOn protocol.

  • supported_modes (Optional, list): Can be used to disable some of AC modes. Possible values: 'OFF', HEAT_COOL, COOL, HEAT, DRY, FAN_ONLY.

  • supported_swing_modes (Optional, list): Can be used to disable some swing modes if your AC does not support it. Possible values: 'OFF', VERTICAL, HORIZONTAL, BOTH.

  • supported_presets (Optional, list): Can be used to disable some presets. Possible values for smartair2 are: AWAY, BOOST, COMFORT. Possible values for hOn are: AWAY, BOOST, SLEEP. AWAY preset can be enabled only in HEAT mode, it is disabled by default.

  • on_alarm_start (Optional, Automation): (supported only by hOn) Automation to perform when AC activates a new alarm. See on_alarm_start Trigger.

  • on_alarm_end (Optional, Automation): (supported only by hOn) Automation to perform when AC deactivates a new alarm. See on_alarm_end Trigger.

  • on_status_message (Optional, Automation): Automation to perform when status message received from AC. See on_status_message Trigger.

  • All other options from Climate.

Automations

on_alarm_start Trigger

This automation will be triggered when a new alarm is activated by AC. The error code of the alarm will be given in the variable code (uint8_t), error message in the variable message (const char *). Those variables can be used in lambdas.

climate:
  - protocol: hon
    on_alarm_start:
      then:
        - logger.log:
            level: WARN
            format: "Alarm activated. Code: %d. Message: \"%s\""
            args: [ 'code', 'message' ]

on_alarm_end Trigger

This automation will be triggered when a previously activated alarm is deactivated by AC. The error code of the alarm will be given in the variable code (uint8_t), error message in the variable message (const char *). Those variables can be used in lambdas.

climate:
  - protocol: hon
    on_alarm_end:
      then:
        - logger.log:
            level: INFO
            format: "Alarm deactivated. Code: %d. Message: \"%s\""
            args: [ 'code', 'message' ]

on_status_message Trigger

This automation will be triggered when component receives new status packet from AC. Raw message binary (without header and checksum) will be provided in the variable data (const char *), message length in the variable data_size (uint8_t). Those variables can be used in lambdas. This trigger can be used to support some features that unique for the model and not supported by others.

climate:
  - protocol: hon
    on_status_message:
      then:
        - logger.log:
            level: INFO
            format: "New status message received, size=%d, subcmd=%02X%02X"
            args: [ 'data_size', 'data[0]', 'data[1]' ]

climate.haier.power_on Action

This action turns AC power on.

on_...:
  then:
    climate.haier.power_on: device_id

climate.haier.power_off Action

This action turns AC power off

on_...:
  then:
    climate.haier.power_off: device_id

climate.haier.power_toggle Action

This action toggles AC power

on_...:
  then:
    climate.haier.power_toggle: device_id

climate.haier.display_on Action

This action turns the AC display on.

on_...:
  then:
    climate.haier.display_on: device_id

climate.haier.display_off Action

This action turns the AC display off.

on_...:
  then:
    climate.haier.display_off: device_id

climate.haier.health_on Action

Turn on health mode (UV light sterilization).

on_...:
  then:
    climate.haier.health_on: device_id

climate.haier.health_off Action

Turn off health mode.

on_...:
  then:
    climate.haier.health_off: device_id

climate.haier.beeper_on Action

(supported only by hOn) This action enables beep feedback on every command sent to AC.

on_...:
  then:
    climate.haier.beeper_on: device_id

climate.haier.beeper_off Action

(supported only by hOn) This action disables beep feedback on every command sent to AC (keep in mind that this will not work for IR remote commands).

on_...:
  then:
    climate.haier.beeper_off: device_id

climate.haier.set_vertical_airflow Action

(supported only by hOn) Set direction for vertical airflow if the vertical swing is disabled. Possible values: Health_Up, Max_Up, Up, Center, Down, Health_Down.

on_...:
  then:
    - climate.haier.set_vertical_airflow:
      id: device_id
      vertical_airflow: Up

climate.haier.set_horizontal_airflow Action

(supported only by hOn) Set direction for horizontal airflow if the horizontal swing is disabled. Possible values: Max_Left, Left, Center, Right, Max_Right.

on_...:
  then:
    - climate.haier.set_horizontal_airflow:
      id: device_id
      vertical_airflow: Right

climate.haier.start_self_cleaning Action

(supported only by hOn) Start self-cleaning.

on_...:
  then:
    - climate.haier.start_self_cleaning: device_id

climate.haier.start_steri_cleaning Action

(supported only by hOn) Start 56°C steri-cleaning.

on_...:
  then:
    - climate.haier.start_steri_cleaning: device_id

See Also