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Eversolar Inverters – Relay Check Fail

Eversolar TL2000

Eversolar TL2000

Eversolar TL1500, TL2000 and TL2500 models may show the error “Relay Check Fail” on their display. When a grid-tied inverter is first powered up it performs several tests, and this particular error means that the grid connect relay has failed. This is the most common fault that we have experienced with these models.

In the event of this fault the following options are available to you:

1. Warranty claim

Eversolar inverters were sold with a five year warranty as standard, so if your inverter is under 5 years old then a warranty claim might be an option. However, Eversolar were acquired by SMA in December 2012 and are now called Zeversolar. Their UK support was subsequently moved to Germany and while they do honour the warranties on these devices, service replacements are slow to arrive and in some cases the delay has run into several months. Particularly for those on the original feed in tariff, the revenue losses due to a faulty inverter can be significant during the summer months.

In order to claim on the warranty you will require your original purchase invoice, showing the model number of your inverter and the fact that the invoice was paid in full. Many installers did not issue such documentation which makes it hard to claim on the warranty.

2. Purchase a replacement

Many customers choose to replace their inverter. Our Solis range of inverters are excellent quality replacements. Give us a call if you’re unsure which one you require.


We also offer an installation service if you do not wish to get involved in the replacement. Contact us for more information.

Solar PV repair enquiry form

For repairs to your solar PV system, please call us on 01772 311016 or complete this form and we will contact you. The more information you give us, the quicker we can help with your enquiry. UK enquiries only please!
Please note that we are a small company and can only offer a call out service within a reasonable travelling time from Chorley, Lancashire. We can send spare parts and replacement inverters via courier anywhere within the UK.
e.g. Are there any fault codes on the inverter screen? Any unusual noises or smells?
If your inverter is at fault then we will definitely need to know what panels are connected to it. Many companies installed a poor choice of inverter the first time round. If we know what your panels are then we can get you the right one.
Your inverter model number and serial number can usually be found on a label on the side or underside of your inverter.
If it's around 5 years, is it over or under? This is important as most inverter warranties are 5 years.
Why do we ask this? Certain companies made consistently the same mistakes/short cuts with their installations.
A picture speaks a thousand words! If you have any photos or other documents that can help us understand your installation then please upload them here. Particularly useful are photos of the inverter model number sticker, the connections into the inverter and an overall picture of the inverter area showing all isolators etc.