Support for Heat Pump Defrost Status

[info-technik]

Device type and model (or SN)

The model can be found in Settings -> Devices & Services -> Midea AC LAN -> Devices -> Device Info
The SN can be found in Settings -> Devices & Services -> Midea AC LAN -> Add device -> Just list appliances
The SN also can be found in your SmartHome APP

The detail description of new feature

Hello,
I am using the midea_ac_lan integration to control my Midea heat pump. I would like to know if there is any way to retrieve the defrost status of the unit.

Currently, I cannot find any information regarding the defrosting process in the available sensors or documentation. This feature would be very helpful for monitoring the heat pump's performance during winter conditions.

Questions:

Is there an existing sensor or attribute that indicates the defrost status?
If not, are there any plans to implement such a feature in the future?
Are there any workarounds to monitor when the unit enters defrost mode?

Thank you for your hard work on this project! I appreciate any information or guidance you can provide.

Best regards,
Marcin

[wuwentao]

@info-technik first of all, you should confirm your mobile phone app name and also confirm whethere it available in your smartphone app from Midea.
in additional, if you confirm it available in your Midea official app, you can share your device SN.
if Midea official app also NOT support it, sorry, I don't think we can do more than Midea as it may required both hardware and software support from midea device protocol at the same time

[info-technik]

Thank you for such a quick response. Your integration offers much greater possibilities than the mobile app! :)

The mobile app does not provide any data related to defrosting, but according to the documentation, the defrost status is available in the Modbus register at the following address:

PLC: 40129 (Register address 128) – System status bit
    BIT1 indicates "Defrosting".

Therefore, it is possible to use an ESP with a TTL converter to read the defrost status, or alternatively, physically connect an ESP to a volt-free contact that signals the defrost status, which is available in Midea R32 heat pumps.

[wuwentao]

@info-technik please update to latest v0.6.6 and enable both midea_ac_lan and midealocal debug log via readme doc.

please upload your device full debug log(after device reboot).
as we have did some test, most of the midea device don't response to current query message, so we can't got the response message and can't parse these return value.

in addition, if you want to using ESP or modbus, it should be another solution, as current integration is using midea official protocol.
and ESP/Modbus can do more DIY jobs.