At a higher consumption, the charging from the PV panels will decrease

Hello

I purchased a Bluetti AC300 + B300 device. The reason why I am writing to you is that I need to power a 2200W heat source, I have solar panels with a capacity of 2400Wp. I usually reach 1500-1900Wp in my conditions. During the connection of the heat source with a power of 2200W, the power from the solar panels will drop from 1500Wp to 230Wp. After forcing the AC, the power from the panels recovers to 1500Wp I saw a lot of tests before buying and never once did the power from the solar panels drop while connecting other devices. That’s why I bought the AC300. Please, how should I set the device so that the solar power does not decrease during the consumption of electricity.

The device has the latest firmware and the battery is also updated.

Thanks