All Z-wave functionality suddenly died on my IQ Panel 2+ late this afternoon. This is a mesh with over 30 nodes that has been stable, and with no hardware or panel configuration actions. As all nodes show as “Malfunctioning”, it seems pretty clear that the panel/controller is the common denominator.
As far as I can tell and have tried, everything unrelated to Z-wave functionality on the panel appears to be functioning properly.
I have tried rebooting the panel, but no difference in behavior. If I go Z-wave Tests, it’s clear that the panel is unable to communicate with any nodes. If I look at the error counters of individual nodes after the reboot, all I see is failures incrementing. If I go to Panel Test and select Z-wave, the test here consistently fails.