Learn about water ingress issues in Solis PV ISO-PRO junction boxes and how to troubleshoot them effectively.
Signs include corrosion, discoloration, and moisture accumulation inside the junction box. Regular inspections can help identify these issues early.
Ensure proper sealing and use waterproof junction boxes. Regular maintenance and inspections can also help mitigate risks of water ingress.
Water ingress in junction boxes can lead to compromised insulation resistance (RISO) measurements, triggering the inverter’s protective mechanisms. The inverter monitors the integrity of the electrical system, including ground fault detection. If moisture penetrates the junction box, it can create unintended conductive paths, causing the inverter to detect a fault condition. This safety feature is crucial to prevent electrical hazards and ensure compliance with the National Electrical Code (NEC). Additionally, water can cause fluctuations in grid frequency limits, further prompting the inverter to shut down or reduce output to protect the system.
Homeowners may notice production drops in their solar array performance, accompanied by alerts on monitoring apps indicating reduced output. Visually, water may be present inside the junction boxes, leading to corrosion of terminals or wiring. LED indicators on the inverter may flash erratically or display fault codes related to grounding or insulation issues.
Always consult a licensed electrician or certified solar installer when dealing with electrical components to ensure safety and compliance with local codes.
To avoid future occurrences of water ingress, ensure that junction boxes are installed in locations protected from direct exposure to water. Regularly inspect and maintain seals and gaskets, and keep surrounding areas clear of debris and vegetation. Consider using junction boxes with higher IP ratings for enhanced protection against moisture.