Sun Synk is a piece of junk. That's all I can say. Ever since the unit was installed there gas been endless issues. The power on the grid is off nothing new in South Africa these days, the sun synk unit is completely dead as well. The unit has only been installed for 1 year 6 months. Now the idea was to get solar to move 80 off the grid. It seems like now I need to get a backup for the solar system. I guess one needs to look at where goods are manufactured if you want quality and reliability. And today's lesson is either you buy Japanese or European products. Chinese cheap and just junk.