I'm in need of help with my SMA Sunny-Boy solar panels.
Model-SB4000TL-20.
Fault code-35 Isolation resistance.
Only happens when both DC lines are running at once.
Left DC running on its own works fine.
Right DC running on its own works fine.
Both DC running together doesn't work - isolation resistance fault.
All panels and connectors seem fine.
Any advise appreciated
Matt
Model-SB4000TL-20.
Fault code-35 Isolation resistance.
Only happens when both DC lines are running at once.
Left DC running on its own works fine.
Right DC running on its own works fine.
Both DC running together doesn't work - isolation resistance fault.
All panels and connectors seem fine.
Any advise appreciated
Matt
