DaveK

I am in Pretoria. I have two 5kw Deyes. The master intermittently reports a F23Tz_GFCI_OC_fault/26570. This in turn causes a parallel system fault on the slave. Deye in China have been of no help and simply say it could be the main board. Notwithstanding the fault both machines continue operating. Any ideas on what problem is or where I can get some help.

Thanks Beat most helpful. I will leave the rs485 interconnecting the batteries and remove the can cable from the prime battery to the inverter. Will let you know what happens

What’d you describe is exactly what BMS is showing. so you would suggest removing ca cable fro BMS to inverters and allow the inverter to manage the system. The BMS can tnen stay connected to other batteries for protection and SOC. Tanks for you suggestion

I have five Greenrich 3.6 batteries connected in parallel. The + is connected from the breaker to the + of the #1 battery with each + then connected to next battery. On the - side the breaker is connected to the #5 battery and then each - connected to next battery. The cables from CB to #1 and #5 are exactly the same length. The interconnect cables are all exactly the same length. All cables are the same resistance. I have 2 5kw Deye inverters in parallel and the breaker is connected to the positives and negatives of each inverter. My problem is that that batteries SOC on #5 is always about 10% lower than #1 with the SOC rate lower on each successive battery until the lowest at #5. The inverter seems to read the lowest battery when deciding to shut down so I effectively lose up to 10% of my battery power. Ely Power (Greenrich) seem totally incapable of solving the problem. Any help will be greatly appreciated.

I set up Solar Assistant as per example on their site for Axpert parallel inverters where the software reads total values (slave and master) from single connection to master inverter. This does not work for Deye/Sunsynk - both inverters must be connected by usb cable to the system. I did this and readings are now okay.

Thanks - I’ll try that.

Same question - do I put all info in master or divide it between both inverters??

I have two Deye 5kw inverters installed. The consumption reported by Solar Assistant is almost half the monthly Tshwane meter reading. Any idea on what the problem might be?