AC200L shutting down every 4-6 hours

I have a AC200L with a single B300. It runs in Standard UPS mode with my computer plugged into the AC200L and the AC200L plugged into grid. It keeps shutting down after several hours even though grid power is flowing through the AC200L. How do I stop this/disable it? All Firmware has been updated to the latest versions. IOT v9041.06/ARM v2134.04/DSP v2098.10/AC200L v1043.11/ B300 v1024.03

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Indeed it’s not the expected behavior.
I’ve been running AC200L every day for hours this week, powering a patio / IR lamp (400W). That’s above the “eco mode” and “auto AC off” default threshold.
Now with the grid input, it should never turn off.
This might be a case for @BLUETTI_CARE ?