MarkRudling

I also have the same issue. Its intermittent. The dongle is offline while this happens and data from the MODBUS is also offline. Inverter runs as per normal though. I have removed the dongle and removed the WIFI board that dongle plugs into. There is a capacitor on the 12v rail that can cause issues, but removing the board verifies that this is not the problem here. I have been advised to log a ticket to have the inverter collected and repaired, meaning I will be offline for a while. Has anyone managed to resolve without sending the inverter off?

Confirmed 1.14 is the correct and most recent version at this time.

@Gambit - What do you know. The correct cable worked first time. Thank you! Does anyone know what the latest firmware should be?

So, I too have recently got 2 new Eenovance batteries to complement the existing two sunsynk batteries. This is the whole "rebranded" story so Sunsynk are unable to update the firmware via the inverter. I have tried absolutely everything, starting with the basics here (https://www.jendustries.co.za/sun-batt-lv) but no matter what I am unable to get the BMS tools to detect either battery (nor the new ones). My setup: 8kw inverter, 4 batteries in parallel. CAN connected from inverter to eenovance battery 1. Out port connected to in of second eenovance, out port connected to in of 3rd battery, sunsynk, then finally the same to the last battery. Inverter correctly identifies all batteries (BMS values change after turning on each battery) so im happy that thats are all talking to each other correctly. Now for the firmware, this is the general procedure I am following: - Power down and disconnect all batteries - Unplug all cables from batteries - Plug single RJ45 plug into the RS232 port (Pin 1 GND, Pin 2 TX (RX wire on the USB device), Pin 3 RX (TX wire on the USB device)) - Connect the USB to the computer, its correctly picked up in Device Manager, I have tried different drivers. - Turn on the red switch on the battery - Press and hold the front button for a few seconds, wait for the battery to boot. - Open oldest version of BMS Tools (tried all 3) - USBs' COM port exists. - Click Open or Try Connect. Times out or fails to open serial port I have repeated this about a thousand times. All 4 batteries behave the same. I have my own crimper, and have reprimed many times. I have tried swapping the TX and RX pins. I have tried pins 6,7,8. I have 4 USB devices. 1x 3.3v, 1x5v, (both these are good quality ones from Communica) 1x cheap one and a very old one that has a DB9 connector that I have wired into a RJ45 plug. I have setup a ESP32 device and using the ESP devices can successfully TX and RX data from the USB cable to the ESP so I know the devices are working. I'm really at a loss as to what I'm doing wrong. I feel like I'm encountering a self made issue as the general consensus online is that it just works. Any pointers would be great.

I think I may have misunderstood how the hybrid inverter with its management of critical and non-critical loads. Unless using the aux/gen, there is no second feed from the inverter. The post below helped me understand it a bit better. So I think the correct wiring would be: Option 3: Two Earth leakages, but correct? Grid will feed a primary 63a dual pole breaker switching Live and Neutral. Live will go into single pole 30a breaker for the stove/oven. Live will go into single pole 40a breaker feeding inverter (clean power, not EL protected) Live will go into first earth leakage feeding non critical loads Return from inverter will go into second earth leakage feeding critical items My understanding then is: Inverter will run 24/7 from battery supplying critical loads PV charge batteries PV provides power to inverter to charge and run critical loads IF battery charge current + critical loads current is less than PV output, inverter will start back feeding into non critical loads IF battery charge current + critical loads current + non critical loads current is less than PV output, inverter will push back into grid (if enabled) Does this mean that during load shedding, regardless of battery charge, there will be no power to non critical items? I would think so, because the grid side will effectively be short circuit during power outage?

Hello I recently had an 8kw hybrid Sunsynk inverter installed. Solar is on the way so its currently running as a battery backup for pretty much the entire house. When solar comes, I would like to start using the inverter correctly and split the essential and non-essential loads. I'm also going to take the opportunity to replace a very old and poorly wired db board. My plan is to split the board into three sections. Eskom only, essentials and non non-essentials. If I have excess generation from solar, feed back into the grid. I'm confused with where to place, and how many Earth Leakage breakers I need. Option 1: Single Earth Leakage Grid will feed a primary 63a dual pole breaker switching Live and Neutral. Live will go into a 30a breaker for the stove/oven 40a Earth Leakage feeding inverter 2x feeds return from inverter feeding essentials and non-essentials. Common busbar neutral for everything Option 2: Two Earth leakages Grid will feed a primary 63a dual pole breaker switching Live and Neutral. Live will go into a 30a breaker for the stove/oven. Single pole 40a breaker feeding inverter Essentials from inverter into 40a Earth Leakage breaker Essentials Live and neutral busbar feeding house Non-essentials from inverter into 40a Earth Leakage breaker Non-essentials Live and neutral busbar feeding house Option two feels more correct, because i dont know what is happening internally with the inverter and if its going to cause all sorts of issue with the way it moves load around the circuits. I'm also a bit unsure of the neutrals. Can I have a common neutral or should they be split. Reading the manual for the inverter its not clear where to place the earth leakages, if at all. Thanks Mark

It will work, but your charger will need to produce more power than the load from the inverter and losses. IE, you may need a substantial charger to keep the battery charged. Most chargers are not designed to deliver power like this. Also not sure if the charger will ever take the battery through its correct charging states (bulk, trickle etc) because of the load its detecting. What you are doing is building an "online ups". There is no changeover and zero delay, but this is very power inefficient, as there is constant losses with the charger charging, and inverter inverting.