Feature request: check errors for example to notify batteries are running low or are empty

[pwesters]

The api provides an option to check for errors. One of the errors the system can give back is empty batteries

"errors": [
  {
    "code": "DEF_BAT_TH",
    "title": "Battery failure",
    "error": "Battery failure"
  }
],

It would be nice to be able to see the errors in HA

[martreumer]

It would be great to be able to see a window open error in HA. I have been trying to recreate the error so i could get the errorcode but for some reason I have not been able to manually create a situation in which the error occurs.

[pwesters]

I don’t know about opening a window but I created an automation to send a notification to my phone. When sensor.error_room_x changed from no issues to battery failure send notification.

At the moment there are no errors so I have to wait for one to be able to check if it works.

[martreumer]

I believe the error occurs when the thermostat detects a temperature drop five degrees within a short period of time. It then assumes you must have left a windows open and shuts of to prevent pointlessly heating a room. See section 6.3 in https://wattswater.eu/upload/iblock/1d9/User_guide_BT_D03_all_lang_01_20.pdf. I’ve had this happening a few times without noticing it and because the thermostat turns off, the temperature in the room just drops to the anti freeze temperature. Would be great if I can set an alarm to this error.