Error ABB E031 Aurora
An Aurora ABB E031 error indicates a relay failure, meaning the inverter cannot read incoming voltage. This is a terminal hardware fault, and the inverter generally needs to be replaced because the relays are a common failure point and the damage can be significant.
E031 Fault on ABB Aurora / ABB Power-One Inverter?
If your solar system has stopped generating and your ABB Aurora (formerly ABB Power-One) inverter is displaying the E031 error, you’re not alone. This is one of the most common faults affecting this inverter model — and it usually points to an internal relay failure.
Unfortunately, the E031 fault cannot be fixed by rebooting the inverter, resetting your system, or installing firmware updates. In most cases, a complete inverter replacement is needed to get your solar generation back up and running and prevent further loss of FIT payments.
What Causes the ABB E031 Fault & What We Do?
The E031 error is a hardware failure, not a software bug. It typically means the relay inside the inverter has failed — which can prevent the system from exporting or generating any power.
At Penta Renewables, we:
Confirm the E031 fault and rule out any external causes
Remove the faulty ABB inverter
Supply and install a new, compatible inverter (e.g. Solax, SolarEdge, Solis)
Fully test your solar system and confirm generation
Provide advice on modern inverters with app-based monitoring
Why Replace Your ABB Aurora Inverter?
Restore lost solar generation quickly and safely
Protect your FIT income by resuming accurate generation
Improve efficiency with newer inverter technology
Gain access to app-based monitoring and system insights
Peace of mind from accredited, experienced local installers
Book Your Replacement or Request a Call Back
If your system has stopped working due to an ABB E031 fault, we can help. We offer fast turnaround on inverter replacements and will guide you through the process from diagnosis to full system check.
Contact our team today using the form below or give us a call for expert advice and to arrange your replacement. No jargon, no pressure — just clear, honest support.