I have an Aquarite with a T15 cell. The water, according to my local pool store, is perfect. The unit is about 5 years old. The cell, while never cleaned, appears spotless. I took the cover of the control panel and noticed a yellow wire leaning on my circuit limiter. The wire has been browned from the heat, but looks ok. Does anyone know what that wire does and/or if the heat could have been damaged it even though it looks ok? I did call Hayward but they refuse to answer anything that you can't find in the trouble shooting manual. They say it's a liability thing.