Good day all,
I have a funny issue appearing every now and then (1-2 times a month)
The MPPT won’t switch on in the mornings because the charge voltage is lower than the battery voltage. See a snapshot below
To get my MPPT going, I need to set the ESS mode to keep batteries charged to “trigger” the battery. once the MPPT is switched on I can go back to my previous ESS state (Optimized mode w/o BatteryLife: self consumption, SoC at or above minimum SoC)
On a normal day the charge voltage setpoint is higher than the battery voltage.
What my config looks like.
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DVCC is set to the BMS on the GX and is switched on
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My MPPT is set to use External BMS
What my setup looks like
3 x BYD BatteryBox LV5.0 connected using CAN (v1.91)
1 x MultiPlus-II 48/5000/70-48 (FW: 2623508)
1 x SmartSolar MPPT VE.Can 250/100 rev2 (V3.16)
1 x Energy Meter ET112 (V4)
I previously had a Bluenova battery where this never happened.
Disabling DVCC will most likely fix the issue, just not sure if there are major risks to doing it and if I will void my battery warranty.
in the meantime, I have a node red flow everymorning before sunrise, the ESS state is changed to plaster the issue with no real fix yet.
any support or thoughts would be appreciated.