FW Compatibility - GroWatt SPF 5000ES (pre-US Version from Signature Solar)

[methods]

I have odd-ball GroWatt SPF 5000ES Units sold back in 2022 by Signature Solar. They are not the European version, there are some differences. I think this was the SPF 5000US before they changed the name.

Model Number:
P/N: SKSL00.0008002

Example Serial Number:
S/N: YRE7BH201Y D0 2
S/N: YRE7BH70EM D0 2
S/N: YRE7BM70M0 D0 2

Firmware as shipped:
40 05 701
41 05 701

I have found FW releases 06 and 07. I am nervous about pushing a version that will revert any tom-jenkery the unit originally saw. I can post Motherboard PN's etc... Unless someone else has already done it and not borked.

The bugs I am seeing are pretty bad. Running 3 in parallel:
* AC output frequency keeps reverting to 50hz from 60hz
* SBU does not reliably switch off of battery to Utility at setting 12 voltage
* Sometimes without power cycle Master Unit will change
* In the past I have seen battery current false report 32A high, battery voltage false report 10V high, endless code 8 (That was with incorrect fans tho)

Disclaimer - my units are WORKED - they have had MPPT IGBT's swapped, fans swapped, All IGBT's on motherboard sapped, multiple teardowns, heavy dust, condensing moisture, shock, vibration, endless BMS LVC hard-opens under load, etc.

thanks,
-methods

 

[methods]

Also:
Maybe we could post a CRC for the known-good firmware versions? I have some I downloaded here... but I have not confirmed them... So I do not want to post any CRC. If someone has a thread like that somewhere, I will post to it. Incorrect firmware can waste a lot of time. Files can get batch-renamed, etc. Never know.

 

[methods]

CONFIRMED
You can upgrade using the standard Firmware.

* Fans from Watts 24/7 worked
* Firmware from this site worked
* IGBT's for MPPT and Motherboard worked
* Paralleling three of them has worked so far (up to 4.20KW burn in - so about 30% load)

Getting no warnings or errors.
Sadly the new 3.x Datalogger only reads Master and not the combined data, but that is easy enough to implement with an Arduino and an Android Tablet.

-methods