Ground fault error on Sunny Boy 2500 inverter

[spurlocktools]

I have a grid tied PV system with two Sunny Boy 2500U inverters, each connected to its own 15 panel array. It has been working fine for six years, but just now one inverter gives me a ground fault error, while the other still operates correctly. Both the red and yellow LEDs are on, and the display reads, "Earth Cur". According to the manual, this should mean a ground fault in the PV array. However, when I swapped wiring so the inverters are now fed by the opposite array, the fault stayed with the same inverter. The GFDI fuse is good, I swapped fuses between inverters just to make sure.

This seems to me to prove a fault in the inverter, not the array, otherwise the fault would have moved to the other inverter, correct? Has anyone else had a similar problem with this inverter?

Thanks for any advice.

[russ]

Welcome to Solar Panel Talk spurlocktools!

We will see what someone that knows the topic says about your problem.

I am no assistance on this but welcome and hopefully Mike and or Sunking can guide you.

Russ

[spurlocktools]

Sunny Boy 2500 ground fault problem solved

Just wanted to report back that after talking to SMA tech support and explaining that when I hooked the problem inverter to my other PV arraythe error message stayed on the problem array, they agreed the inverter must be at fault. I accepted their $360 refurb inverter swap. Problem solved, no more error indica

[russ]

Glad to hear the problem is solved!