AURORA/ABB E031 Error
If your Aurora Power One/ABB solar inverter is displaying an Int. Error E031 message, this indicates that the inverter has a relay failure and that it is unable to read incoming voltage. This is a terminal fault and means the inverter will need to be replaced.
The E031 error is a common fault with Aurora/ABB inverters. This issue has been identified and any inverters manufactured from mid-2015 will not suffer from this fault.
What Should You Do If Your Inverter Develops This Fault?
In the first instance, you should establish if your inverter is covered under warranty. ABB/Aurora inverters are typically supplied with a 5 year warranty. If your system was commissioned within the last 5 years you should contact your original installer or ABB directly. Beyond 5 years it is still worth checking with ABB and some inverters would have been supplied with a 10 year warranty at the point of installation.
If your inverter is out of warranty it will need to be replaced. Complete the form below to receive an instant quote from Eco7. We endeavour to provide the best pricing possible for our inverter replacement services in order to minimise the costs to consumers.
Solar Inverter Replacement
Is your solar inverter faulty? Eco7 will replace the unit with a state-of-the-art inverter complete with free monitoring and a fresh 10 year warranty. Our basic pricing for single-phase (domestic) solar inverter replacement (up to 4kW) starts at £630 (inc. VAT) for 1kW inverters and is capped at £783 (inc. VAT) for 3.6kW dual MPPT models (excluding optional add-ons, upgrades to premium brands and surcharges for installs more than 120 miles from our head office). Beware of companies charging inflated prices for a solar inverter replacement. This is a straightforward process that will take one of our qualified engineers no more than one hour to complete.
Best Price Guarantee – We promise to beat any like-for-like quote, please call for more information.
7 Reasons To Swap Your Inverter With Eco7...

We've Been Busy
Eco7 have completed hundreds of installations across England and Wales and have a 100% satisfaction rating. Based in Scotland? We can still provide services in central and southern Scotland via one of our trusted installation partners (please call for more information).
Solar Inverter Replacement Instant Quote
Solar inverter replacement: Is your solar inverter faulty? By completing this form you will receive an instant FULLY INSTALLED quotation. All prices include VAT. This quote is for guidance purposes only and additional details may be required before Eco7 issue a detailed proposal. If you would like to proceed or require any further information, please complete the form at the end of the quotation wizard and we will get in touch.
Thank you. A confirmation email has been sent. Please check your spam folder if you do not receive an email within 24 hours.
System Size - Single MPPT
What is the size of your PV array in kWp (e.g. 4kW)? Please select the closest value to your actual system capacity.
Orientation
Is your installation installed on one orientation (i.e. all on one roof in one string, or is the system split)?
System installed on one orientation
Installed on more than one roof in two strings, or on one roof split into two strings.
System Size - Dual MPPT
What is the size of your PV array in kWp (e.g. 4kW)? Please select the closest value to your actual system capacity.
WiFi Monitoring
Do you require a WiFi adapter to allow for remote system monitoring via app or web portal?
Location
Please enter your full post code. Eco7 provide installation services across England and Wales, however certain locations may incur a surcharge owing to the distance from our head office.
Your Panels (Optional)
Please provide information about your PV panels. You can skip this step if not known.
Please specify (if known) the number of panels you have installed.
Please specify (if known) the make and model of your panels.
Your Panels (Optional)
Please provide information about your PV panels. You can skip this step if not known.
Please specify (if known) the make and model of your panels.
Please specify (if known) the number of panels you have installed.
Final cost (including VAT)
The final estimated fully installed price (including VAT) is:
Optional - we always reply to enquiries by email and will not call under any circumstances unless you specifically request a callback.
Summary (for guidance only). All prices include VAT and show as additions to the base price.
Description | Information | Quantity | Price |
---|---|---|---|
Discount : | |||
Total : |
Premium Brands
At Eco7 we only source the market leading products from respected inverter manufacturers. All of the inverters we install (with the exception of Fronius models) are supplied with a 10 year warranty and subscription free monitoring.
Eco7 recommend the X1 Air & Boost range from SolaX Power; one of the foremost inverter manufacturers in the world, renowned for producing high-end products at unbeatable prices.
We also offer inverters from other leading manufacturers such as SMA, Solis, ABB and Fronius.

The SolaX Power Inverter Range
Eco7 recommend the SolaX Power range of string inverters. Efficient and reliable, the SolaX inverters come with a 10-year warranty and are the ideal choice for those looking for solar inverter replacement services.