Thing is professional installers are reluctant to certify a diy as they didn’t do it and more to the point, didn’t get compensated for it. Why should their warranty cover something that is their core business yet they missed out on bulk margin? I guess there are installers that may but they will check every circuit and cascading fail safes consequently charging heaps to the extent they may as well have done it.
I wouldn’t warranty someone else’s work. It’s grief you just don’t need. No reflection on the diyer.
Based on that, I am somewhat disingenuous expecting the insurance co t