Timer issues
I have an unusual problem. The inverter and app see my battery as being 100% while the battery self indicates a much lower %. Last night the battery indicated around 50-60%.
The only way to resolve this issue was to turn my timer off. When I went back to switch the timer on, after the battery and inverter were back in synch, I noticed that the timer was now asking for a SOC Voltage and not a % as per the past. I then looked online, via Internet on sunsynk.net , and there the timer displayed a SOC as %. I then re-activated my timer from the internet and it once again started to differ in battery SOC. Switched off it came right!
The timer on the inverter itself is also now asking for a voltage input as SOC and not a %. If I then change a SOC Voltage on the timer it seems to work, but to set a timer using Voltage instead of % is not ideal!
I suspect this is where the problem lies, but do not know how it can be corrected.
I asked on our user group on Facebook and there is a person with exactly same problem.
I have a 5kW Sunsynk inverter along with a Dyeness 5kW battery combination.
Just a thought here and five cents worth.
Have you confirmed that the Battery BMS and Inverter are communicating properly?
On the inverter settings choose LiBMS. You should get battery voltage, SOC, etc on this menu.
Also, have you set up the battery as Li and chosen correct comunication protocol for the battery?
Maybe hear from the battery vendor if there is a firmware issue and update.
I had issues with Pylontechs a few months ago and it turned out to be the battery firmware.