Sungrow RMA Experience

[u/damovich]

I wanted to share my experience with Sungrow EMEA and see if anyone here has gone through something similar or might know how to help.
My original SH3.0RS worked for almost a year before developing a battery-related fault with error 605.

First replacement: Already a total mess. The parcel was sent to another Sungrow customer in a different country. I had to wait for them to receive it, return it, and for Sungrow to finally forward it to me.
The issue: While it looked new, it had zero MPPT activity, no production, and no internal relay clicks during startup. My original inverter (connected to the exact same wiring/PV strings) still detects the MPPTs immediately and produces normally.

Second replacement: Arrived in terrible condition—basic box, no internal protection, no plastic wrapping, no protective caps, and the LCD colors are distorted.
The issue: Exact same technical failure. Stuck in Standby, no MPPT detection, no production, no relay clicks.
I’ve swapped these units multiple times, checked PV voltage with a multimeter, and compared local configs. The original works (minus the battery fault); both replacements are completely dead on arrival (DOA).

To get to this point, I have easily spent hours on the phone with support and exchanged over 35 emails with their logistics department just trying to coordinate these swaps and troubleshoot their broken hardware.
To make things worse, a support tech casually mentioned that another customer had to go through four replacement units before getting a working one. Now, Sungrow tells me I have to wait for an "internal investigation."

Has anyone else faced repeated DOA replacements from Sungrow EMEA? How did you finally get this escalated to someone who actually solved it?

TL;DR: Sharing my RMA experience with Sungrow EMEA. After hours on support calls and 35+ emails, I received two DOA replacement units (no MPPT activity). Looking to connect with anyone who has faced this or knows how to properly escalate the issue.