Hello & Welcome to Just Answer,
Sorry to hear of any issue you are having with your unit.
To help with this issue, please let me send you a couple of links - which least to the system manual, in PDF form, and the "setup video" for this unit.
Click Here for Manual --> http://www.lacrossetechnology.com/media/catalog/product/w/s/ws-7215u.pdf
Click Here for Setup Video (about 5 minutes long) --> https://www.youtube.com/watch?v=cVl9KcRG-Zo
I hope this helps.
Please let me know if you have any more questions.If this has answered your question(s), please take a moment to rate MY service level (5-star is my goal) so that I get credit for my time helping you with this question.You should see some "stars" (and SUBMIT button) to do that, but please let me know if you do NOT see them (you may have to scroll UP or DOWN) or can not use them.
Thanks, ***** *****--. .-