I get 03 code battery overvolt. When switch off light breaker it's back to normal. Is used 10amp breakers for live one and neutral one to the lights in the house.
Found the error. When my eskom power is on somehow the way cables is connected some volts go back to my inverter. Luckily it did not blow my inverter. Must inverter is very safe. My ECCO does not give any error warnings.
Same problem. Error 04 on Must inverter. Tested my 8s 24v Lifepo4 bat. 90% SOC on load near 2500-2800 Wt and invertor showed f 04. By manual it means, that battery voltage low... Voltage was droped from 26.8 to 25.6 volts under load. Cut off volrage set at 23.5v. Strange, becouse teoreticaly my 200 Ah 5 kWt battery can produce up to 200 Amps and invertor takse only 125 Amps on max load. At 2kWt and lower- no problem. What can couse the error? Bad wire connection, pure contact at DC circuit braker?