ECN Forum Forums General Topics of the Trade General Discussion Area new breaker box blew out my a/c - who pays?

The A/C was manufactured in 2006. It has a diagnostic module which I also thought should have protected against overload. We have a Home Warranty and the A/C guy said he had to report to the Home Warranty Company about the oversized fuse. How can I prove to them that it's not due to the oversized fuse?

Thanks,
Uninformed