Bluetti EB3A randomly shuts down in UPS mode

I bought this power station to supply power to my boiler pump. The pump’s power consumption is 60 W. Eco mode is disabled, but when the main power goes out, the station turns off and does not power the pump.

I need to fix this issue because my apartment will freeze. What should I do? What other information about the power station do you need me to provide, and where can I find it, so that you can send me an update that will help fix this issue? EBЗА2524000669402