Inverter Error Codes
Solar inverters use error codes to flag faults with the inverter, the grid connection or other parts of your system. Find your brand below, match your code, and see the likely cause and next step.
- Codes for 10 major inverter brands used in Western Australia
- Likely causes plus recommended action for each fault
- Escalate to SAA Accredited Installers when a fault repeats
Inverter fault code finder
Select your inverter brand and model, enter the error code showing on the display or app, and we'll show the likely cause and the fix.
- 1. Brand
- 2. Model
- 3. Error code
When to call a professional
Some inverter error codes clear with basic troubleshooting; others need expert diagnosis. Electrical systems can be hazardous, so complex repairs should never be attempted without proper training. If a fault keeps returning, have a licensed professional inspect the system so it stays safe and efficient.
General inverter troubleshooting tips
- Reset the inverter: Turn the inverter off, wait a few minutes, then turn it back on to see if the fault clears.
- Check grid conditions: Verify grid voltage and frequency are within the acceptable range. If there are grid issues, contact your utility provider.
- Inspect wiring and connections: Check both DC and AC connections for loose or damaged wires. Ensure everything is secure and free of corrosion.
- Ensure proper ventilation: Keep the inverter in a cool, well-ventilated spot and clear dust or debris to allow proper airflow.
- Inspect solar panels: For DC voltage or I-V curve faults, check panels for damage, shading, soiling and correct wiring.
- Monitor performance: Use your inverter monitoring app to track real-time data and logged faults.
- Check for firmware updates: Make sure the inverter runs the latest firmware — some faults are caused by outdated software.
- Consult the user manual: Your inverter manual lists brand-specific troubleshooting steps for each code.
Error codes by inverter brand
Pick your inverter brand to expand its fault codes, or search for a specific code such as “STATE 301” or “F0”.
Can’t find your inverter code?
Error code lists vary by model and firmware — always check your inverter manual as well. For anything recurring, get in touch and we’ll arrange a licensed technician.
Contact Total Solar