Investigations and repair a relay fault on an EverSolar Grid inverter. Bench testing an inverter with a DC power supply.
Solar panels are not very easy to install, so you should hire a professional to get the job done. While you will save a bit of money by trying to do it in your own, you do not want things to be less than perfect. Also, you will most likely end up paying someone to come out and fix the mess you made.