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Error codes by brand

Sunvolt error codes

26 codes documented in Sunvolt'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 Sunvolt. This page summarises Sunvolt's own published documentation; your installer and Sunvolt are the authority on your system. WattMate doesn't repair systems or make site visits.

Battery codes

  • 01DC bus voltage exceeds the upper threshold
  • 02Arc occurs on PV
  • 03DC bus voltage falls below the lower threshold
  • 04Parallel setting is not correct
  • 05Battery discharging current exceeds the upper threshold
  • 06Battery charging current exceeds the upper threshold
  • 07Short circuit on PV1 input
  • 08Short circuit on PV2 input
  • 09Short circuit on AC output
  • 10Leakage current CT fault
  • 11DC/DC Current Sensor fault
  • 13PV Current Sensor fault
  • 14EEPROM read failure
  • 15Communication with main & secondary controllers are interrupted
  • 16Over temperature fault
  • 17PV input voltage exceeds the upper threshold
  • 18Over power protection
  • 19PV insulation resistance is too low
  • 20Battery charging voltage is too high
  • 21Fan fault
  • 22Overload
  • 23PV input over power
  • 24Battery type is wrong
  • 25RCMU test fault
  • 26Model setting fault
  • 27Battery Voltage Drop

Find the Sunvolt 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.

We don't have a warranty line on file for Sunvolt yet. See the manufacturer contacts we do hold, or ask your installer.

  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