Sungrow SG125HV/SG125HV-20 Error 448-471: String x reverse connection fault

Solar inverter · taken from the manufacturer’s manual, pages cited

Fault code448-471

This Sungrow SG125HV/SG125HV-20 inverter has detected a reverse connection fault on one of the PV strings. The manual's first action is: “If so, disconnect the DC switch and adjust the polarity when the solar radiation is low and the string current drops below 0.5A.”

Model
Sungrow SG125HV/SG125HV-20
Display shows
String x reverse connection fault (448-471)
Type
Fault code
Source
Manual p. 85

What 448-471 means

String x reverse connection fault p. 85

Common causes

  • Check whether the corresponding string is of reverse polarity. p. 85
  • If the fault is not caused by the foregoing reasons and still exists p. 85

What to do

  1. If so, disconnect the DC switch and adjust the polarity when the solar radiation is low and the string current drops below 0.5A. p. 85
  2. contact Sungrow Service. p. 85

Before you service the product, read the safety instructions in the manual p. 5.

If 448-471 is still not resolved

  • Refer Servicing To Qualified Service Personnel. p. 5
    “Refer Servicing To Qualified Service Personnel.”
  • Check user manual before service! p. 5
    “Check user manual before service!”
Open the manual at page 85 All SG125HV/SG125HV-20 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 448-471; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Sungrow. Found a mistake? Report an error.