Reply » Anwar Mahmood, Service Engineer from SMA Australia, explains the different options available for complying with Earth Fault Alarm according to Australian standards. Afternoon all, Just thought i would share my afternoon with you all.

Can be monitored in local network or via Sunny Portal. But the next day The sunny boy inverter had a red light and reported a fault and stopped connecting to the grid. This inverter is a little older than the ones I first started working with, but on those I don't remember anything other than replacing the fuse and turning the inverter back on. I have residential installation with 2 PV arrays feeding 2 separate Sonny Boy SWR2500U inverters. so i have 2 x SMA Sunnyboy 1200 inveters both situated outside next to each other(IP rated of course), when i noticed an earth fault today. Page 30 Commissioning the Sunny Boy SMA Solar Technology AG Disturbance or Fault If the Sunny Boy detects a disturbance or fault, this event is indicated through a blink code of the yellow and, where applicable, the red LEDs. [INV-SB5.0-1AV-41]

One of the inverters is showing the red LED Earth Fault (GF) preventing power output. 300V (slightly different on each string as one has 11 panels, one as 9) This was taken at the DC isolator near the inverter – …

I got sunny boy swr2500u inverter, was installed new by home builder in 2005, no fault code, green light is on solid but E-today only 1.5kwh compare to the house next door same system E-today at 14kwh, Dcv from panels at 470v. voltage between positive and earth = 0V (both strings) voltage between negative and earth = 0V (both strings) voltage between positive and negative approx. Sunny Boy 5.0 Solar Inverter - SMA Smart Connected Small and light 5kW solar inverter with built-in Wifi, audible earth fault alarm. Since you started off talking about replacing the board, I think everyone's assuming that the fuse is good and you tested the array to rule out a genuine ground fault.



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