Absolutely no service when the product fails.
I have bought 4 pcs. 5 kW inverters for a 3 phase system. After installation, problems started to occur, e.g.: Charge batteries from mains even setup should only charge from PC (Solar panels). Two inverters reports from time to time ERROR 08, which is internal error, send product to repair. After more than 6 months still defective inverters haven’t been changed. Power supply disappears in the house every time the system shifts from and too battery consumption. System have to be restarted (power completely removed) 5 – 10 times a week, as power output disappears. Specs are super for the product, but the product is unstable, don’t buy products from this supplier, the service sucks.