Deye SUN-5K-SG - Troubleshooting DC Input and Insulation Errors; F-01 DC Input Polarity Reverse Fault; F-02 DC Insulation Impedance Fault; F-03 DC Leakage Current Fault

5KW Storage Inverter Repairing Guide
Error
F-01
DC input polarity Reverse Fault
Description
Turn off AC switch and DC switch, and check the PV panel DC input polarity.
Error
F-02
DC insulation impedance permanent fault
Description
The impedance between DC+ and ground or DC – and ground is too low, turn off the
AC switch and DC switch, and then check whether the PV panel (aluminum frame) is
grounded well and inverter is grounded well. Open the cover of inverter and then check
the inside ground cable is fixed well on the shell.
Error
F-03
DC leakage current fault
Description
Positive
Negative