Quote Originally Posted by twh View Post
this is a prime example of how 10 watt flexwatt is potentially dangerous.when you can get working temps with 6 watt why use 10 watt? not only is there a overheating potential but when running several racks there is a real cost savings to using 6 watt.

to the original poster you were wise to go thru the tweaking process with a empty rack,many people don't.have fun !
Oooops!~ not so fast!!
I don't see that we were told whether he has back heat or belly heat for the rack system from RBI. On Rich's website he says: "Heating is accomplished with 11" Flexwatt heat tape on the back OR 3" Flexwatt in the shelves for the belly heat. Heat tape is fully recessed into the shelves for long product life and safety." This is for the 4-drawer 32-qt rack system that he says he has. So, if he has the belly heat, that is 3 watts. Also, on Rich's site under Flexwatt FAQ's, he states that putting the t'stat probe directly on the tape is the way to do it.
I really believe that he needs to get in touch with Rich and figure out what is going on.
My 2 cents (sense?!)