The Sync Module has a physical reset button located next to the USB port on the side of the device (pictured below). This button should only be used to put your Sync Module into setup mode. Pressing this button will bring your system offline until you reconfigure your Sync Module.
If you are having any issues with your Sync Module, it is best to first power cycle the Sync Module by unplugging the power cord from the back of the unit for 10 seconds and then plug it back in. This should cause the device to reboot and then reconnect within 45 seconds displaying a solid blue and solid green light.
For instructions on how to do a full factory reset of your Sync Module, contact Customer Service here.