since I moved to openhab 2.5 with the z-wave binding 2.5.1. my z-wave network is crashing after the nightly heal. I didn’t change anything. I didn’t add a node and after a restart all is working very well. After reading some topics here i found out that the solution form me is to deactivate the nightly heal.
You bet! A number of us have experienced this problem
The details of the problem are pretty well documented in a couple GitHub issues. I won’t reference them again here, but you can find them in the issues list in the zwave GitHub repo. IMO, it’s really a matter of sorting out the proper way to fix it, however, @chris is deep into some other major work on the binding at the moment.
The best solution for now is to disable the nightly heal (as you have already done).