Your browser does not support HTML5 video.i must admit am in love with the new Phoenix inverter smart design,But i sincerely dont think its as durable as the former .I have successfully installed 2 of the 1600va models. one stopped working after an hour and the overload light has forever been on,even though its been restarted severally.the other one still works but there is annoying humming noise even when there is no load on the inverter . What could be the cause ?It looks as if this model is not as durable as the previous ones. has anybody had a similar experience? Is the phoenix inverter smart repairable at all? @Johannes Boonstra