Energy (Heat) - Mitsubishi Heat Pump

Should support all Mitsubishi heatpump units with a CN105 connector

Plugin details

Type: Energy (Heat)

Name: Mitsubishi Heat Pump

Status: ENERGY, COLLECTION D

GitHub: P093_MitsubishiHP.ino

Maintainer: crnjan

Used libraries: .

Plugin is based on Arduino library to control Mitsubishi Heat Pumps.

Supported hardware

Plugin should support all Mitsubishi heat pump units with a CN105 connector- git issue, where users can report models they are using - list.

How to connect

Note: If your unit has cn105 port, it is most likely supported. If your unit has cn100 port, it may work as well.

CN105

CN100

Notes

1

NA

12V, can be sourced from pin 3 of cn51 or pin 1 of cn52 (not needed for ESP)

2

8

GND

3

1

5V

4

5

TX

5

4

RX

Danger

Please make sure to verify voltages!

Parts required to make a CN105 female connector

Example using D1 mini PRO

../_images/P093_1.jpg

There is a good tutorial on how to do soldering and installing.

Setup

The Mitsubishi Heatpump plugin can be added as simple as selecting it from the list, selecting the serial port used for connection - and we are ready:

../_images/P093_2.jpg

See: Serial Helper configuration

Once we hit submit, the plugin will start sending messages through controller, i.e. MQTT with payload:

{"roomTemperature":25.5,"wideVane":"|","power":"OFF","mode":"COOL","fan":"AUTO","vane":"AUTO","iSee":true,"operating":true,"compressorFrequency":5,"temperature":24.0}

Message is send every time a change is detected (i.e. one changes settings using IR remote control) and every X seconds, as set in the settings (60 seconds in above screenshot).

Commands

Command

Description

MitsubishiHP,temperature,<value>

Value must be between 16 and 31.

MitsubishiHP,power,<value>

Value = ON or OFF

MitsubishiHP,mode,<value>

Value = HEAT, COOL, FAN, DRY or AUTO

MitsubishiHP,fan,<value>

Value = 1, 2, 3, 4, AUTO or QUIET

MitsubishiHP,vane,<value>

Value = 1, 2, 3, 4, 5, SWING or AUTO

MitsubishiHP,widevane,<value>

Value = <<, <, |, >, >>, <> or SWING

Example

There are several ways how to control AC unit using ESP Easy.

Using HTTP:

Generally commands are send via http using syntax http://<espeasyip>/control?cmd=<command> where <espeasyip> is the IP of your ESP Easy device, for example 192.168.0.100:

Command

Description

http://192.168.0.100/control?cmd=MitsubishiHP,power,ON

Turn on AC

http://192.168.0.100/control?cmd=MitsubishiHP,temperature,23

Set target temperature to 23

http://192.168.0.100/control?cmd=MitsubishiHP,fan,AUTO

Set fan mode to AUTO

Using MQTT:

Commands are send via MQTT using syntax <MQTT subscribe template>/cmd with payload: <command>. For example, if your unit name is MyESPEasy, one would send the below payload to topic MyESPEasy/cmd:

Payload

Description

MitsubishiHP,power,ON

Turn on AC

MitsubishiHP,temperature,23

Set target temperature to 23

MitsubishiHP,fan,AUTO

Set fan mode to AUTO

Please check here for more details on how to send commands using ESP Easy.

Please check for an example integration with openHAB.

Special thanks

  • to SwiCago and other maintainers and contributors of the Arduino library to control Mitsubishi Heat Pumps from https://github.com/SwiCago/HeatPump/,

  • to Chris Davis for his great blog,

  • to Hadley from New Zealand for his hacking.

  • and all others that contributed on this subject.

Change log

Changed in version 2021/08/03:

added Status of operating and compressor frequency.

New in version 2020/03/07:

added Initial release version.