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JOE90 wrote: ↑Wed Oct 16, 2024 6:19 pm Hello.
I wonder if anyone has experience of replacing dead string inverters. Mine is a 4kw Sunpower inverter installed 11 years ago on the outside wall of my house. We have a feed in tariff fro EDF that I don't want to lose.
It has stopped working. Maybe a lightening strike. The error code is E031 which I think means it's kaput.

How easy are they to replace? I'm OK at DIY . I only need a string inverter.

Thanks for your help

Welcome to the forum Joe, you'll be looking for an mcs registered installer to preserve your fit integrity? Have you made any local calls?

Fueltheburn wrote: ↑Thu Oct 17, 2024 7:45 am This topic crosses over with the other one we were having about the OFGEM regs released on September 7th this year.

My interpretation of those regs is it comes under the repair category.
Repair with the same output inverter i.e 4kv and your FIT remains unaffected. No need for MCS installer.

My inverter was replaced from the original inverter which popped and a more efficient one went in (just because). It has not affected my FIT.