You can troubleshoot your CentraLite 3-Series Appliance Module by
First, check whether the lamp or the device is working; you can do this by plugging it into a non-switched wall plug.
Then check whether your 3-Series Module is working. Unplug it from the wall receptacle and plug it again, then test to check whether the device is working.
First, unplug the device connected to the 3-Series Module, then unplug the module from the wall receptacle.
Then long press the on/off button and plug it back into the wall.
Leave the button when the LED status turns on.
Once the reset is done now it is time to rejoin the ZigBee network.