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Error codes by brand

Hoymiles error codes

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

Inverter codes

  • 121Over temperature protection
  • 124Shut down by remote control
  • 125Grid configuration parameter error
  • 127Firmware error
  • 129Abnormal bias
  • 130Offline
  • 141Grid overvoltage
  • 14210 min value grid overvoltage
  • 143Grid undervoltage
  • 144Grid overfrequency
  • 145Grid underfrequency
  • 146Rapid grid frequency change rate
  • 147Power grid outage
  • 148Grid disconnection
  • 149Island detected
  • 205Input overvoltage
  • 206Input overvoltage
  • 207Input undervoltage
  • 208Input undervoltage
  • 209No input
  • 210No input
  • 211No input
  • 212No input
  • 213PV-1 & PV-2 abnormal wiring
  • 214PV-3 & PV-4 abnormal wiring
  • 215Input overvoltage
  • 216Input undervoltage
  • 217Input overvoltage
  • 218Input undervoltage
  • 219Input overvoltage
  • 220Input undervoltage
  • 221Input overvoltage
  • 222Input undervoltage
  • 301-314Device failure
  • ARC_FAULTArc Fault
  • Battery Voltage FaultBattery voltage is higher than the permissible range.
  • BATTERY_REVERSE_CONNECTIONBattery Reverse Connection
  • BMS_BATTERY_ALARMBMS Battery Alarm
  • BMS_BATTERY_FAULTBMS Battery Fault
  • BMS_COMMUNICATION_FAULTBMS Communication Fault
  • EPS_LOAD_OVERPOWEREPS Load Overpower
  • Grid OverfrequencyThe grid frequency is higher than the permissible range.
  • Grid OvervoltageThe grid voltage is higher than the permissible range.
  • Grid UnderfrequencyThe grid frequency is lower than the permissible range.
  • Grid UndervoltageThe grid voltage is lower than the permissible range.
  • GRID_OVERVOLTAGGrid Overvoltage
  • GRID_UNDERVOLTAGGrid Undervoltage
  • ISOLATION_FAULTIsolation Fault
  • METER_COMMUNICATION_FAULTMeter Communication Fault
  • METER_REVERSE_CONNECTIONMeter Reverse Connection
  • No GridNo grid detected.
  • OVER_TEMPERATUREOver Temperature
  • PV Reverse ConnectionPV strings are reversely connected.
  • PV_OVERVOLTAGEPV Overvoltage
  • PV_UNDERVOLTAGEPV Undervoltage
  • RELAY_FAULTRelay Fault
  • Residual Current FaultHigh residual leakage current detected.

Find the Hoymiles 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.

Hoymiles warranty email
service.au@hoymiles.com
Hoymiles 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