The ZW4103 is a plug-in outlet. The ZW1002 apparently also goes by 14288, and is a receptacle (outlet), not a switch.
I seem to remember some people having issues using the 14288 with the Generic Switch driver. Did you try using the Generic Outlet driver with this device? Not sure that is the issue, but I would think that sending wrong commands to the outlet might cause something unwanted to happen.
These are not the same issue exactly, but they did some odd things with the incorrect driver.
