How to fix a Solar Inverter displaying an error (Sunna, Sunny Roo etc)

This is a general guide to fixing any solar inverter displaying an error. Either the AC capacitors or the Output relays themselves will need to be removed from the PCB and replaced. Sometimes an islanding code '010', means the inverter has lost connection to the grid, quite often because the grid voltage has 'spikes', it spikes too high and then the inverter disconnects to save itself. If it doesn't disconnect quickly, the fuse could have blown internally, which you can check visually inside the inverter itself. Quite often it is a highvoltage glass-style fuse.

This inverter in this video was a Sunna 2000TL (similar to 1500TL, 3000TL, 4000TL and 5000TL), Sunny Roo, Sungrow and many other inverters.

In this video I took apart a Sunna inverter to show you what to look for. Sungrow is another brand that this can assist with. With error code 010.

Not sure? Consult a reputable solar inverter repairer.

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