OK, although the issue is not yet resolved I made great progress tonight in understanding what is going on thanks to the help here. First thing I tried tonight was taking my ST outlet and trying to use it as a repeater for Zigbee and did a repair on the ST network. As JD mentions this does not work and it made no difference. I decided to try it because in this post Zigbee Repeater someone specifically listed this device as a repeater for Zigbee. I assume based on JD’s info that the info in that post is not accurate.
Next I moved my GoControl into the room where the ST hub is. All of the sudden the sync problem was fixed. When its off it shows off, when its on it shows on and toggle keeps the state correct in ST. Before I had relocated the GoControl near the hub it was out of sync and I could not correct it.
Next I tried Removing the device from the Z-wave network via ST. I had tried over 100 ties before and it never worked. This time it worked in seconds when I did it form the room where the ST hub is. Also for reference the pattern is tap (release), tap (release), tap and hold (so 3 taps with the last tap held, not 4 taps with the last tap held).
Then lastly I took the GoControl back to its original place and tried adding it back into the network. ST could not find it no matter how long I waited. Then I remembered I had this issue originally, and took it to the room with the ST hub to add it as a device weeks ago when I first set it up. Then when I moved it to the basement it did fine, except for these occasional issues.
Summary: So CLEARLY we can conclude that the issues I have been having are due to limitations to range. That is disappointing because by line-of-sight the GoControl is only 20 feet away. But its in the basement so apparently getting thru to the level above is an issue.
In reading through the threads it seems other people have sought out Zigbee repeaters but did not find anything. If anyone knows of a device I can add to act as a repeater, please let me know.
The other option I have is to return the GoControl and replace it with the MIMOLite, which is Z-Wave based and will serve the same purpose. I prefer the GoControl because it does not need a plug-in transformer, but if I can’t solve the connection issue then the only option may be to go the MIMOLite route.
Thoughts?
Thanks!