SolarEdge Error Code 18×86: Find the Dangerous Ground Leak
SolarEdge Error Code 18×86 indicates an isolation fault, meaning the photovoltaic array has insufficient electrical resistance between a live DC conductor and ground. The inverter shuts down to reduce shock, fire, and equipment risks. Do not repeatedly reset the system; the physical fault may be a wet connector, damaged cable, module, optimizer, or rooftop junction. […]