Wow I love this site. New member. My pool controls are pentair. Control panel, wireless remote and spa side remote. I have flawless performance from my unit until Sept 2012 ( new 2009) then the is4 spa side remote quit functioning. I ordered a new is4 replaced it. The new is4 spa side remote doesn't work maybe I jumped the gun replacing it. Do I need to shut off all power and reset the controller ?