I have a pentair ichlor 30 salt system and have had it for about a year. All of the sudden, I went to check it yesterday and the cell had no lights indicating to me that it had no power. So I took the cover off of the power center and the green light was on. I went ahead and checked fuse and it was good but went ahead and replaced it. Still nothing. Any ideas what I could check next? Trying to refrain from calling expensive service tech.