I have a couple devices in my mesh that no longer respond to commands.
Bali zwave shade stuck at opening
innovelli smart dimmer stuck in the 'on' position at ~60% - no response to any commands at all
The troubleshooting steps I've seen so far suggest running zwave repair and unplugging the hub from power for over a minute, i've tried both and both devices consistently and instantly back at this state. Hoping there are some additional steps I can take...
I don't know what you mean by air gap, can you expand on that?
I power cycled the shade (removed power supply), that had no effect. The switch has a cutoff tab (breaks circuit when pulled) which I used to power cycle it as well, no effect.
You could try factory resetting the devices and using the z-wave replace to join them back to the same node. Here is a guide I made: [Guide] Updating Firmware and ZWave Replace
Other option would be to create Virtual placeholder devices, use swap apps to swap to the virtual devices to keep your automations in tact. Then exclude the devices and pair them again. Once paired and working again, swap apps from the virtual to the new devices.
Not sure why they dropped of totally in the first place, it is not normal. Possibly there was a small power spike and the devices factory reset themselves due to a malfunction.