Amber Alarm LED but no alarm displayed in the LCD Panel

hi everyone. we have bigip2000 version 11.6.0. the led of the alarm is solid yellow. however, it does not display any alert in the LCD, dashboard or even the logs.

what is the difference if the LED of the alarm is solid yellow and solid green?

can anyone give me an article about these indicators, applicable to bigip2000 and version 11.6.0.

Thank you guys.