Hi, I have a problem with my underfloor heating. When i switch on the underfloor heating, it triggered off all the electrics in my house and now i don't have any underfloor heating at all. So I called my builder who orginally did the job. He checked everything & came to a conclusion that the underfloor heating wiring is burnt. He said that he can reinstall the underfloor heating & retile the floor but he's asking for payment which i dissagree cos i have already paid alot of money for the first job. How can i avoid paying the money, pls help!

