AC180P and neutral wire

Product Discussion BLUETTI AC Series
1

Question about AC180P Charging Station and Gas Boiler Connection

I have an AC180P charging station to which a gas boiler is connected. The boiler requires a neutral wire for ignition to function properly.

The charging station outputs two phases (or is there a more accurate term for this?). I take the neutral from the grid and connect it to one of the phases from the charging station. After this, the boiler operates correctly, but a new problem arises.

The AC180P charges in standard mode at about 1kW. The boiler consumption is around 50W. However, with the neutral connection setup and the boiler connected (in UPS mode), it shows a charge of 1.5kW and a consumption of 500W. I understand that one of the phases from the charging station’s output is going to the charging input. What can be done in this situation?

Additionally, when it is fully charged, it goes into error E013.

ARM v2089.02
DSP v2088.02
BMS v1039.01

P.S. Previously, I lived with the EB70 for two years and used this connection scheme without any errors or problems.

2

@DonRover The issue has been reported to R&D and I will let you know ASAP if there is any update.

3

@DonRover Under UPS mode, the input shows 1500W and the output is 500W, so 500W is the load on the grid bypass and 1000W is the power for charging the battery. Is the actual power consumption of the boiler 500W or 50W?

4

I’ve found the problem.
I was using the neutral from the grid, and I was charging from the same outlet.
Since the inverter has two phases on the output, I created a loop on one phase, which meant I was charging myself with 500 watts. :)
I will now create a circuit with a 2NO2NC contactor for switching the input and the neutral from the grid.

I didn’t have this issue with the EB70 because its external power supply provided isolation. Or maybe I just didn’t notice it because its charging capacity is only 200 watts.

5

@DonRover Thanks for your update.