Bug(AC): display and frozen mode state spammed a log file

[sstyle]

Verify Issue Submission

• I have read the README documentation , understand how to use midea_ac_lan and enable debug log.
• I have read the device documentation for my device in the README, but the problem still can't fix.
• I have submitted the device type and SN information.
• I have uploaded the full debug log file, rather than just paste a parts of log based on my own judgment.
• I have accurately and clearly described what the current error is and what the expected correct result should be.
• I have searched for my issue in the Issue Tracker and have not found it.

HA core version

2025.10.1

Current integration version

0.6.10

Last known working integration version

no

Device type and Device SN

Air Conditioner, 000000P0000000Q1BC0435239C660000 and 000000P0000000Q1BC0435F793EE0000

Working mobile app

SmartHome

The detail description of bug/problem

MDV MDSAN-09HRFN8
MDV MDSAN-18HRFN8

VERY frequent update status of display state and frozen protection mode

4. Summary: Actual status still same, I do not change display setting or do not change frozen mode state. But a lot of spam in the log.

The logs

home-assistant_2026-01-19T15-42-45.836Z.log

[sstyle]

@wuwentao please take a look

[wuwentao]

I'm sorry, I can't found this on/off info from your debug log, you can have a check:
'screen_display': True,
also include
'screen_display_alternate': True
no any options got a False value in your debug log.

so I can do nothing with an error debug log file and your error description.

error log MUST match the error description, issue template have this info requirement

[sstyle]

error log MUST match the error description, issue template have this info requirement

Sure, but what I did wrong? I enabled debug level, export the log exactly after I saw the issue in activity log

P.S. 6:32:28PM (on the screenshot) = 18:32:28PM (GMT+3), so date in datalog should be 15:32:28.

[sstyle]

@wuwentao ok, got the log with frost_protect true and false statuses. Full log 700mb+, so cutted

home-assistant_2026-01-22T13-13-02.065Z.log

[sstyle]

home-assistant_2026-01-22T13-13-02.065Z.log and longer log file (~1 hour) if you need one

[wuwentao]

thanks!
from the finally 12MB debug log file, I just found frost_protect attr have error and I will try to check with it...
but I can't found any error about screen_display with both true/false result.
you still need to provide the error log about screen_display attr error with true/false error log, you can reboot HAOS or clear old log and got a new fresh log, then upload it , please don't remove logs, as error log should have more info about the normal status and error status change.

[sstyle]

home-assistant_2026-01-24T17-28-46.952Z.log
Here is a log with screen_display issue

[wuwentao]

thanks, this log can got the screen_display error issue, it should caused by a error device protocol, and also have a Unidentified protocol with 0xB5 for your device.
need to do more checks and confirm which value should works for your device(as most of the device only have 1 protocol and your device have more, but only 1 is the expected result)

so for your screen_display log, the real value (in device screen) should be True ?
and for frost_protect error log, the real value (in device state) should be True ?
all these info has been add to issue template and requirements, we have error, we also need to got which one is the right and expected value, as no one can guess these value for your device.
thanks

[sstyle]

screen_display should be False
frost_protect should be True

[sstyle]

hi @wuwentao any updates? I found that frozen_protect status updates every 14:59

[sstyle]

@wuwentao pls pls