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Error codes by brand

Sungrow error codes

77 codes documented in Sungrow's inverter and battery manuals. Pick yours to see what it means, what you can safely check, and when to call your installer.

WattMate is not affiliated with Sungrow. This page summarises Sungrow's own published documentation; your installer and Sungrow are the authority on your system. WattMate doesn't repair systems or make site visits.

Battery codes

  • 703Battery fault detected
  • 707Battery temperature issue
  • 708Battery temperature issue
  • 711Battery fault detected
  • 712Battery fault detected
  • 714Communication issue with inverter
  • 715Battery fault detected
  • 717Battery fault detected
  • 732Update required
  • 733Battery temperature issue
  • 734Battery temperature issue
  • 735System fault
  • 736System fault
  • 737System fault
  • 739Battery restart required
  • 740Incorrect battery connection detected
  • 741Update required
  • 742Poor connection or reverse power cables
  • 743System fault
  • 744Fault detected
  • 745Fault detected
  • 746Update required
  • 747System fault
  • 750Contact installer for assistance
  • 833Battery alarm
  • 932Battery alarm
  • 933Temperature warning
  • 934Temperature warning
  • 935System alarm
  • 937Check temperature
  • 939Battery alarm
  • 941Check temperature
  • 942Check temperature
  • 964Battery alarm

Inverter codes

  • 01Grid overvoltage
  • 2Grid Overvoltage
  • 002Grid overvoltage
  • 02Grid undervoltage
  • 3Grid Overvoltage
  • 003Grid overvoltage
  • 4Grid Undervoltage
  • 004Grid undervoltage
  • 5

Find the Sungrow manual for your model

When to call your installer or the warranty line

Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware. Don't open the inverter or battery case yourself: work inside it is for a licensed electrician.

If you see smoke, scorch marks or smell burning, switch the system off at the AC and PV isolators and call your installer. If anyone is in danger, call 000.

Sungrow warranty phone
1800 786 476
Sungrow warranty email
service@sungrowpower.com.au
Sungrow service network
Open the manufacturer's service page
  1. Try the free fixes first

    Most faults are an isolator, a WiFi drop or a known error code. Start with the lookup and guides above.

  2. Then call the people who are responsible for it

    Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware.

    Find the manufacturer's warranty line
  3. If it's near the end of its life, see what replacing it would do

    A free energy audit report sizes a new system for your actual bills and shows what a replacement would do. Your first results need no details; your details only reach installers if you ask for the full report.

    Get your free energy audit report
Grid Undervoltage
  • 005No Grid
  • 006Overhigh leakage current
  • 007Grid abnormal
  • 008Grid overfrequency
  • 8Grid Overfrequency
  • 009PV reverse connection fault
  • 9Grid Underfrequency
  • 10Grid Power Outage
  • 010Grid Power Outage
  • 012Overhigh leakage current
  • 12Excess Leakage Current
  • 013Grid abnormal
  • 13Grid Abnormal
  • 014Low ISO resistance
  • 14Grid Overvoltage
  • 015Grounding cable fault
  • 15Grid Overvoltage
  • 016Arc fault
  • 17Grid Voltage Imbalance
  • 019Smart Energy Meter communication error
  • 028PV reverse connection fault
  • 28PV Reserve Connection Fault
  • 29PV Reserve Connection Fault
  • 37Excessively High Ambient Temperature
  • 039Low ISO resistance
  • 39Low System Insulation Resistance (Earth Fault)
  • 43Excessively Low Ambient Temperature
  • 48PV Abnormal Alarm
  • 54Electric Arc Fault
  • 063System alarm
  • 064System fault
  • 84Reverse Connection Alarm of the Meter/CT
  • 88Electric Arc Fault
  • 106Grounding Cable Fault