October 13, 20214 yr I have two Pylontech 3.5Kw batteries on a Sunsynk 5Kw inverter with 10X420W solar panels. During load shedding today, the battery was not even being used as solar was sufficient. It was working fine until it threw an F58 error and shut off power. I switched the batteries off and then on again and then pressed the "SW" button on the batteries to start up. It eventually clicked on and started working again. Upon checking fault codes, it listed "F58 - BMS communication fault". I then unticked the setting under battery "BMS_Err_Stop" as i assume this is what made it shut off power. Any ideas on this error and how to avoid in the future.
January 29, 20224 yr On 2021/10/13 at 2:36 PM, Vani said: I have two Pylontech 3.5Kw batteries on a Sunsynk 5Kw inverter with 10X420W solar panels. During load shedding today, the battery was not even being used as solar was sufficient. It was working fine until it threw an F58 error and shut off power. I switched the batteries off and then on again and then pressed the "SW" button on the batteries to start up. It eventually clicked on and started working again. Upon checking fault codes, it listed "F58 - BMS communication fault". I then unticked the setting under battery "BMS_Err_Stop" as i assume this is what made it shut off power. Any ideas on this error and how to avoid in the future. Hi Vani, I saw the same problem with the system, when tick BMS_Err_Stop I get the communication fault. Did you ever find the problem?
January 29, 20224 yr Author Hi Did not experience the problem again after unticking the BMS_err_stop feature. I assume it shuts off even for the slightest error. Inverter been working fine ever since. But still not sure what caused the BMS error.
April 17, 20233 yr Have had the same thing with my DEYE 16kw,. not sure what caused it but had the box ticked as well. Not sure if there is a downside to unticking the box?
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