WARNING: This text is addressed to electrical engineering professionals.Electricity is very dangerous and can kill you. If you decide to follow the steps below, it's on your own responsibility and i'm not responsible for and damage that may be caused to you by following these steps.
In order...
I posted in my home brewing blog how I bulletproof the controller. the post is in hebrew but have many pictures and is self explanatory.
the idea is to take the relay out and bring the realy voltage to activate 40A SSR.
http://www.hamivshelan.com/?p=1581
My 2 cents.