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Error codes by brand

Jiangsu Koyoe Energy Technology error codes

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

Inverter codes

  • 1GFCI Fault
  • 2BMS Communication Fault
  • 3SPI Communication Fault
  • 4PV Overvoltage Fault
  • 5Isolation Fault
  • 6Grid Voltage Fault
  • 7Grid Frequency Fault
  • 8Bus Voltage High
  • 9Off Grid Over Voltage Fault
  • 10Battery Over Temperature Fault
  • 11Inverter Module Over Temperature Fault
  • 12Battery Voltage Low Fault
  • 13Low Ambient Temperature Warn
  • Battery Over Temperature FaultBattery temperature exceeds safe levels.
  • Battery Voltage Low FaultBattery voltage is too low.
  • BMS Communication FaultBattery Management System communication failure.
  • Bus Voltage HighInverter bus voltage exceeds safe levels.
  • GFCI FaultGrounding fault current leakage protector activated.
  • Grid Frequency FaultGrid frequency out of allowed range detected.
  • Grid Voltage FaultGrid voltage out of allowed range detected.
  • Inverter Module Over Temperature FaultInverter module overheating detected.
  • Isolation FaultIneffective grounding of inverter detected.
  • Low ambient Temperature WarnAmbient temperature is below allowable levels.
  • Off Grid Over Voltage FaultHigh off-grid output voltage detected.
  • PV Overvoltage FaultPhotovoltaic input voltage exceeds safe limits.
  • SPI Communication FaultMaster-slave DSP communication failure.

Find the Jiangsu Koyoe Energy Technology 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 Jiangsu Koyoe Energy Technology 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