Today I noticed that the display of my charging station looks like the one shown in the attached photo. The station operates in UPS mode and is constantly connected to the power grid. Power outages happen regularly, so it is continuously operating in charge/discharge mode. What could this indicate, and how can it be fixed? Thank you.
Appears inverter’s management chip is unable to read sensors of internal components, or is able to read sensors but unable to update the LCD due to an LCD connection fault. Is it actually supplying power to your DC or AC devices ? Does Bluetooth still work ? Can you connect to the AC180 with bluetooth and Bluetti App to check for any error icon (!) in top right corner of main page. If error icon exists, tap on it to see error code.
It’s control board problem, same issue were reported numerous times for AC180/AC180P. You should tag @BLUETTI_CARE and they will provide you with repair shop info.
Is your only load 11W DC? I ask because true UPS is pass through AC from the grid to an AC device and the milli second response is the inverter switching time for seemless continuous power.
Any DC load is from the battery and does not connect to the inverter. But, connected to the grid it will still act as a quasi UPS for DC loads anyway.
Have you done a recalibration recently? If not, plug in a constant AC load (300 to 500W) and flatten the AC180, then do a full AC grid recharge with no loads and both DC & AC outputs turned off. (Bit like a computer, turning it off then on again usually fixes 4 out 5 problems lol.)
provided this screenshot to show that there are no errors in the app
I edited my post with another suggestion 
The grid is connected, and at the same time there is a load on the AC port
I’ve had an AC70 on UPS for around a year now. It is grid 240VAC charged and the AC output powers my Fibre Optic Input, WiFi Router and Security Camera Hub for a total of 25W.
As I have 2 AC70’s, I remove the one used and temporarily connect the spare. Then I deplete the normal use AC70 to around 2% (I don’t really like flattening, but have without issue) I then recharge from grid as above and once done, swap the units back again. This is done approx every 6 months, partly to give it some extra work and calibrate the display.
I would suggest the recal as a first step, when you have the time to try this. If it still shows this contact Bluetti Care.
all those errors, overload temp short etc are not normal. In fact before a recal, if you haven’t already done so, diconnect everything, input and output, turn it off for a couple of minutes, then back on.