Growatt Inverter Error Code 301
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Growatt error 301: AC terminals inverted
Growatt error code 301 usually means the inverter has detected an issue with the AC terminal wiring. This may indicate that the AC terminals are inverted or not connected in the correct order.
When this happens, your inverter may temporarily disconnect from the grid or stop operating to protect the system.
This is not a normal operating message and should not be ignored if it appears. AC terminal issues can sometimes occur after installation work, inverter replacement, switchboard work, wiring changes or an electrical fault in the AC connection.
Book a solar inverter check with e-Solar
If Growatt error code 301 appears, it is worth having the system checked before attempting to restart it repeatedly. AC wiring faults should only be assessed by a qualified technician.
Our Perth solar team can inspect the inverter, review the AC connection and help determine whether the issue is linked to terminal wiring, site wiring, inverter configuration or another electrical fault.
Contact e-Solar and let us know:
- The exact error code on the screen or app
- When the code appears
- Whether your solar production has dropped
- Your inverter model, if you know it
Do not open the inverter, switchboard or AC terminals yourself. If the issue is persistent, a qualified technician may need to inspect the inverter terminals, AC cabling, switchboard connection and system safety before restoring normal operation.
Get In Touch Today
Not sure what the error code means? Send us a quick message with a photo of your inverter screen. We’ll help identify the issue and guide you towards the safest next step.
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Growatt Inverter Repairs and Fault Support
We understand that every solar system is different, which is why our repair and fault-finding services cover a wide range of Growatt inverter models. If your inverter is showing error code 301, our experienced technicians can help determine whether the issue is linked to grid voltage, inverter settings, site wiring or wider network conditions.
With over 22 years supporting Perth solar systems, e-Solar has seen all kinds of inverter faults and performance issues. We’ll assess your system safely, explain what the code means, and recommend the right next step to help get your solar running properly again.
Trust e-Solar for reliable Growatt inverter support backed by local experience, honest advice and long-term solar care.