My multiplus II 12/3000 stopped working this morning and I am unsure why, I suspect it has something to do with the cold.
This morning I woke up and when I switched on a 30w 240v light everything connected to the 240v switched off. I checked the inverter and found that all of the inverter and charger lights on the multiplus were flashing. Inverter is connected to 4 300ah lifepo4 batteries and the battery voltage at the inverter was 13.29v. I do not believe it was a battery issue as my 12v diesel heater was still working fine and I was able to still have a shower using the 12v water pump connected to the circuit. I switched the inverter off and back on again and everything worked normal. I then tested with a 1700w load and my battery voltage barely dropped.
Wondering if anyone else has experienced this before and what the solution was?
The Bluetooth dongle connected to the multiplus said that the battery cabinet was at 9 degrees Celsius. It was still dark outside so there was no solar going into the battery and the voltage was 13.29v at the inverter. The battery bms’s were still outputting power, my diesel heater was reading 13.29v and was running fine, plus my water pump was still able to pull 10a.
Did you happen to note which LEDs were flashing and check against the Special LED Indications chart in the manual? It might give a hint as to what happened.
All of the led’s were flashing in sequence. It would flash “inverter on”, then “overload”, then “low battery”, then “temperature”, then “mains on”, then “bulk”, “absorption”, and “float”. It kept doing that in a loop until I switched it off and on
I have a bad feeling that I know what’s wrong with it now and quite frankly I feel ill. A mouse just ran out of it while I was removing the plate that covers the wires… About to disconnect everything so I can remove the front cover
