Quote Originally Posted by ElliotNess View Post
What end has the cord, who wired it and have you checked voltage at your outlet. Pics of connections would be great
x2...pics of how it's wired would help the best. Can't be the rack itself, and I doubt it would be the thermostat. It's only a 3 bin rack...a small variation is expected but nothing like what you're seeing...

What kind of heat tape is it? I've read about problems with flexwatt having hot spots or cool spots...