Sungrow SG125HV/SG125HV-20 Error 564-571: String x reverse connection alarm

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

Fault code564-571

This Sungrow SG125HV/SG125HV-20 inverter has detected a reverse connection alarm on one of the PV strings. The manual's first action is: “1. Check whether the corresponding string is of reverse polarity. 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 alarm (564-571)
Type
Fault code
Source
Manual p. 86

What 564-571 means

String x reverse connection alarm p. 86

Common causes

  • Check whether the corresponding string is of reverse polarity. p. 86
  • If the fault is not caused by the foregoing reasons and still exists p. 86

What to do

  1. 1. Check whether the corresponding string is of reverse polarity. 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. 86
  2. 2. If the fault is not caused by the foregoing reasons and still exists, contact Sungrow Service. p. 86

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

If 564-571 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 86 All SG125HV/SG125HV-20 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 564-571; 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.