Below is a copy of my correspondence with Lippert pertaining to the control board. It has a lot of good information on the board made by Lippert. Hopefully it will be of some help.
"Could you please let me know which remote you are referring to? Each type of remote has a slightly different sync’ing process. You can also go to our website:
WWW.LCI1.COM and click on customer service at the top of page. Scroll down to ELECTRONICS and from there you will find all we have on our wireless remote systems. Under Lip Sheets (drop down menu) you will find all trouble shooting info and Manuals under the Manual drop down menu."