Hi!
I have analyzed your diagram and paper.Its kind of hard to understand the operation. I think there are two inputs (manual on/off using dip switch and sensor inputs). These two inputs controls the high voltage path throuh an IGBT. That messy controller part is not clear. Give it up. You go for a sequential cct design. I have a rough state diagram in mind. If you are still there send a reply. I'll send you the state diagram. Anyway you have to study something about Sequential ccts, Flipflops,K-maps,etc. Then Its easy.
As for the IGBT part, you have to request in the "part request" section. I'm not familiar with IGBTs. But I would suggest a Relay. In that case I can help you.
Sorry for late reply. And congrats that you are doing some electronic projects.