hi Dave, my soleredge system has the same failure rate about 1 a year, if there is a 25 year warranty shouldn’t they be replaced FOC. When mine fail i have a problem finding an installer to fit the replacement, as mine no longer trades, and i am unable to find someone in south wales or near enough to justify the cost. solar edge themselves have also this year refrained from responding to my online call=logs,and emails. does anybody out there know of a local installer who can help?