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Error code question W31

Has anyone got a error code W31? On Sunsynk 12kw 3phase inverter.

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HiTech
HiTech
Jul 09, 2022

Interesting, so if batteries/BMS differs, then common denominator is the SunSynk, I was thinking it may be the Hubbles, as they also currently have a known issue. My Batt Shutdown is set to 20% and have never gone below 45% on Batteries. Yet as mentioned this initiated after the Sunsynk firmware change. Running ver: M2004-1108 S18-07 C1001-E024 Had 1084 E014 before this. Interesting to know if you are on same version? Also, are you using ATS for Neutral/Earth bonding (Signal islanding mode), mine is not providing 220V output and also see in latest manual V16, they no longer reference this on pins 5&6

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