Hey y'all, I am currently an 18 month old AWP AID1500 PRO LCD 1500VA UPS. Recently, I discovered that when there's a powerloss, my UPS just turns off and doesn't switch to battery mode. I tried unplugging from the socket and trying to switch it on, but it just will beep and turn off. However, if I plug it in, the LCD screen will display that it has a full battery. Does anyone know what the issue is here? It used to work fine but suddenly this happened. Any help will be appreciated, thank you!
Attached below is a video of the issue and the image of my UPS LCD.
Attached below is a video of the issue and the image of my UPS LCD.