Domoticz

I installed the MelCloud plugin to control my Mitsubishi Electric airconditioning.
The plugin installs OK, and I can see a number of devices reflecting the current status of the machine.
But when I try to change a setting, the Domoticz log shows:
The setting does not change in the device.
Does anyone have experience with this plugin? Any clues as to what might be wrong?

I cannot find a way to report this error in the plugin's Github entry.

Error code 500 means "Internal server error". Otherwise said, the remote server (here MelCloud) has a problem...
You may perhaps contact them to ensure they know there's a problem

Is anyone else using this plugin at all? Or am I the only one trying to control the Mitsubishi Electric machine from Domoticz?

Some people don't like to much using external servers (like MelCloud) and do prefer having a direct, local control on AC, working without Internet access.

Some, including me, are connecting an ESP8266 into CN105 AC connector (https://github.com/SwiCago/HeatPump), and use Domoticz plugin (viewtopic.php?t=28365&p=295429) to control it

You'll find more details at https://chrdavis.github.io/hacking-a-mi ... mp-Part-1/

However, generally 500 errors are only temporary ones, and are often fixed by server reboot.

FlyingDomotic wrote: ↑Thursday 31 October 2024 21:33 Some people don't like to much using external servers (like MelCloud) and do prefer having a direct, local control on AC, working without Internet access.

Some, including me, are connecting an ESP8266 into CN105 AC connector (https://github.com/SwiCago/HeatPump), and use Domoticz plugin (viewtopic.php?t=28365&p=295429) to control it

You'll find more details at https://chrdavis.github.io/hacking-a-mi ... mp-Part-1/

However, generally 500 errors are only temporary ones, and are often fixed by server reboot.

Do you know of any ready-made units available?

Personally, no, but you have only to solder 4 wires to an ESP8266, and plug the connector in A/C.

Could you try this plugin version, which works well for me ?
https://github.com/truffe13/domoticz-python-melcloud

Truffe13 wrote: ↑Wednesday 30 April 2025 22:41 Could you try this plugin version, which works well for me ?
https://github.com/truffe13/domoticz-python-melcloud

Works!

How many Domticz devices are you seeing? I got 7, not sure if there are any more!

Great
I have got 7 devices per unit : Mode, Fan, Vane Vertical, Vane Horizontal, temp, temp set point, info
JP