I am starting up my system for the first time. The battery charged all day yesterday pretty much without issue. But today I have gotten several "03" errors--the system starts charging the battery (I see the PV voltage drop, and if I change views I see ~8A draw from the PV, and ~18A into the battery), but then I get a beep and "03" shows briefly on the readout. At that point the PV quits charging the battery, and PV output goes to 0, or close to 0.
- I would not be surprised if my battery was fully charged, but is error 03 indicating a problem, or simply a fully charged battery?
- My battery voltage is not showing as fully charged--the max voltage of the AmphereTime batteries (2 in series) is 29.2V, so I understand fully charged should be 58.4V. But the screen shows battery voltage as 56.3V. Am I understanding correctly that the batteries should be able to accept more charge?
- Should I not put any trust in the readings on the Growatt screen? I.e. May I assume that the battery is fully charged and this explains what I'm seeing?
- I noticed yesterday that the PV output current displayed on the Growatt was quite a bit higher than should have been possible--i.e. showing 8.5A instead of the calculated 6.5A.