Excessive logbook entries due to frequent timeout/disconnects

[ShrinkWrapper]

System Health details

System Information

version	core-2025.9.1
installation_type	Home Assistant Container
dev	false
hassio	false
docker	true
container_arch	amd64
user	root
virtualenv	false
python_version	3.13.7
os_name	Linux
os_version	6.12.38+deb12-amd64
arch	x86_64
timezone	Europe/Oslo
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	4987
Installed Version	2.0.5
Stage	running
Available Repositories	2210
Downloaded Repositories	13

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Dashboards

dashboards	4
resources	8
views	3
mode	storage

Network Configuration

adapters	lo (disabled), eth0 (enabled, default, auto)
ipv4_addresses	lo (127.0.0.1/8), eth0 (172.16.14.4/24)
ipv6_addresses	lo (::1/128), eth0 ()
announce_addresses	172.16.14.4

Recorder

oldest_recorder_run	August 28, 2025 at 2:11 PM
current_recorder_run	September 7, 2025 at 3:21 PM
estimated_db_size	460.64 MiB
database_engine	mysql
database_version	12.0.2

Checklist

• I have enabled debug logging for my installation.
• I have filled out the issue template to the best of my ability.
• This issue only contains 1 issue (if you have multiple issues, open one issue for each issue).
• This issue is not a duplicate issue of any previous issues..

Describe the issue

Just starting off by saying that the integration is working fine, no issue with usability. This is merely about an annoyance that I've noticed in the syslog and logbook.

The logbook is reporting that the systemair is becoming unavailable multiple times an hour, filling up the logbook. It doesn't seem to have any affect on the integration as everything is working, but it is making it hard to find "real" events in the logbook when it is full of these messages.

I'm noticing the same in the syslog as well. The times of the disconnects seems to correlate to the times in the logbook.
Is it possible to do something about these reports?

Reproduction steps

1. Install systemair integration
2. Let it run for a while
3. Check logbook and syslog
   ...

Debug logs

2025-09-12 06:58:24.034 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 07:27:41.104 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 07:31:33.106 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 07:43:00.110 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 08:07:07.031 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 08:53:46.106 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 09:09:46.111 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 09:11:37.035 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 09:44:36.033 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 09:56:43.104 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 10:01:06.033 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 10:16:05.108 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 10:21:29.032 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Timeout error fetching information - 
2025-09-12 10:37:04.104 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED
2025-09-12 11:36:17.110 ERROR (MainThread) [custom_components.systemair] Error fetching systemair data: Received mb disconnect - MB DISCONNECTED

Diagnostics dump

No response

[AN3Orik]

You can try my fork, RTU still slow and got sometimes 6/11 modbus errors but unit always online. https://github.com/AN3Orik/systemair