ISM8 Binding: no updates after a few hours

Dear all,

Im running openhab 3.2 in a container on my NAS. Everything is working fine beside that I have an issue with my ism8 binding. It’s working fine for a few hours and then stops to receive any update. If I restart the container, its working again, if I just restart my Wolf heating system, there is no change. Therefore I assume the issue must be linked to the binding or openhab, not the ism8 card / heating system.

The last restart was ~ 5:15 am this morning:
2022-05-03 05:15:14.868 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item ‘ISM_HeizungBetriebsart’ changed from NULL to 6.0

The last update was ~10 hours later:
2022-05-03 15:42:08.183 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item ‘ISM_HeizungSysAussentemperatur’ changed from 19.89999955520034 to 19.699999559670687

Since then no update is part of the events.log.

Thank you for your help.

For whatever reason: I could solve the issue by updating the BM Modul to firmware 3.0, in case someone has similiar issues.