JFY JSI Solar Inverter is a Chinese-manufactured brand so it can be expected that it is way cheaper compared to European inverters on the market. Several factors may affect an inverter’s performance which may result in failures.
If any problems arise, the “Alarm” LED on the front panel will be red and the LCD displays the relevant information. Please note that safety measures should be observed to avoid any risk of injury or you may also seek assistance from a qualified electrician.
No any display in LCD or LED
Check PV-input connections
W01 No grid
Check grid connection cables.
W02 Vin overvoltage
Check the Voc of PV string, see if it is greater than or too close to max. input DC voltage of relative inverter type.
E01 Isolation error
Check the impedance is between PV (+) & PV (-) and the PV-Inverter is earthed. The impedance must be greater than 2MΩ
E02 Leak error
The leakage current is too high.Unplug the inputs from the PV string and check the peripheral AC system.
E03 Grid fault
Make sure grid voltage and frequency meet the specifications.
Please note that during periods of little or no sunlight, the JFY JSI Solar Inverter may continuously start up and shut down. This is due to the insufficient power generated to operate the control circuits but this is not a trouble.
Here are some more fault messages that you may see on the JFY JSI front panel display.
If following the steps above does not fix the issue and your JFY JSI Solar Inverter is still within the warranty period you can contact the equipment installer or supplier. If your inverter is outside the warranty period we suggest that you contact a professional solar power expert. If you’re on the Gold Coast or Brisbane area contact Gold Coast Power Solutions here and we will be in touch to provide you with further assistance.