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Error codes by brand

Redx error codes

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

Battery codes

  • Battery faultA critical fault has occurred with the battery.
  • Battery warningThe battery is experiencing a warning condition.
  • ChargingBattery is currently charging
  • DischargingBattery is currently discharging
  • Grid disconnectedNo connection to the electrical grid
  • Grid faultA fault has occurred in the grid connection.
  • Grid warningThere is a warning regarding the grid connection.
  • No batteryBattery connection not detected
  • No PVPhotovoltaic connection not detected
  • Power exported to gridEnergy is being sent back to the grid
  • Power imported from gridEnergy is being drawn from the grid
  • PV faultThere is a fault in the photovoltaic system.
  • PV undervoltageThe voltage from the photovoltaic (PV) system is too low.
  • Startup conditions are not metThe system cannot start due to unmet conditions.
  • Startup conditions not metSystem is not properly set up to start
  • System faultA fault has been detected in the system.
  • System warningThere is a non-critical issue with the system.

Inverter codes

  • Battery connection errorNo battery is detected
  • Battery over currentCharge/discharge current too high
  • Battery under voltage or over voltageThe battery voltage is abnormal, the internal circuit protection is triggered
  • Bus soft start failedSoft start process could not complete
  • DC Bus over-voltageHigh energy input to the inverter
  • DC Bus under-voltageDC Bus under-voltage
  • EEPROM read failureData retrieval issue

Find the Redx 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.

Redx warranty phone
+61 7 5672 9983
Redx warranty email
support@redx.com.au
Redx 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 over frequencyGrid frequency too high
  • Grid overvoltageGrid voltage above allowable range
  • Grid Short CircuitShort circuit detected at AC input
  • Grid under frequencyGrid frequency too low
  • Grid under voltageGrid voltage is below the allowable range
  • Inverter overvoltageOutput voltage out of range
  • Inverter phase lock failurePhase alignment error
  • Inverter undervoltageInverter undervoltage
  • Islanding protectionDisconnected from grid due to protection
  • IsoFaultEarth Fault Alarm
  • Load short circuitShort circuit detected at inverter output
  • No gridNo grid is detected
  • Output overloadOverloaded outputs
  • Relay faultRelay malfunction detected