Today I was letting the unit run the battery down by taking it off AC for a few hours. I plugged the AC back in when it was at about 37% and the whole thing “died” cutting off all the power to my valuable computer equipment! Yet the display remains on including the AC light, however next to that light was a small flashing warning in red “short”, which remains flashing unless I turn AC off, even after a factory reset. The error on the app says Inverter Output Failure (inverter soft startup) E004. @BLUETTI @BLUETTI_CARE
So now I am running everything off my spare battery supply (from your competitor brand) and I would like to get this fixed ASAP. Serial number is AC1802436003079382
loT v9046.01
ARM v2074.07
DSPv2078.07
BMS v1033.12
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Hi @christangey,
Here is what I was able to find regarding the error codes:
| Error Code |
Description |
Suggested Action |
| E004 |
Output failure. |
Ensure the output voltage is within ±10% of the rated voltage or proper grid connection. |
Note: Do not randomly connect the power station to a wall outlet or to the unit itself, and do not disconnect it arbitrarily either. Make sure to switch off the power station first; this helps prevent internal short circuits. This is also stated in the power station manual.
This can lead to a short circuit in the BMS board and the inverter. There is a possibility that the fuse on the BMS board has been damaged due to this short circuit.
Some Bluetti units have an internal and sometimes an external fuse that you can replace, but this only applies to a limited number of models.
Hopefully this information helps.
Kind regards,
Jason