Same here 
Error executing script. Error for call_service at pos 1: Unable to set value 43-38-0-targetValue: zwave_error: Z-Wave error 202 - Failed to send the command after 1 attempts (ZW0202)
But why just one attemps ? Before it was three no ?
It’s unclear to me. Before my Zwave network was fine. No issues. I think it is a software bug, but not sure.
Is there any wat to downgrade ZWaveJS UI to an older version?
FYI, I ended up migrating to a 500 series stick (aeotec), and all problem disappeard.
1 Like
I am going to migrate to an Aeotec Gen 5 + with S2 support. Hopefully the stick will arrive in a couple of days.
Controller completely jammed this afternoon. Everything went offline. Even with the latest firmware on the Zooz ZST39 it is still not ok. I have 65 devices added to it and it simple can not handle it. When I had a lot less devices added, it worked fine. But with too many devices added, it gets unstable.
1 Like
Same issue here following a recent migration to Aeotec 700 series stick from a 500 series.
Can’t figure out if it’s the stick upgrade or something. 509 series has been rock solid for almost 5 years.
The 700 is known to be having issues. It would be better to upgrade to an 800 or go back to a 500.
For information, I change the setting of my old fibaro plug to be less talkative and everything seems much better today.
Helpt my network too. Have a Zooz 800. Jammed often and suddenly had devices drop from the network. After changing the settings of the Fibaro plugs, the problem was solved.
1 Like
I have tried everything to get an Aeotec 700 to work. Kept getting a jammed controller, dead nodes, failed commands. Went back to my 5-year 500 stick and zero issues.
Wondering what am I going to do when the 500 eventually fails. Has anyone looked at the Aeotec Smart Hub (Matter/Zigbee/Zwave/Smartthings) and whether that’s any good?
Forget the aeotec 700. Look at zooz. It’s not perfect but so much better
Which chipset - 700 or 800?
Take the most recent => 800
If you don’t need the new chipset, stay with the 500. If it ain’t broke, don’t fix it! 
When you really feel the need to upgrade, go to a 800. I have a Zooz 800 too. Like Idaho said, it’s not perfect. I had lot of issues too. I managed to get the network traffic down which helped. However, I still see now and then that the controller jammed or was unavailable briefly. No idea why.
For not it’s workable and everything seems to work. But it takes a lot more work then when using a 500. Never had issues with a 500 before.
For the record, I also get this intermittently with a ZME_RAZBERRY7. They have a “pro” version with an external antenna. Using Home Assistant Yellow. Think the Antenna will help?
I don’t think it will help. I think it has to do with the 700 chipset. Different antenna does not change it.