Range rover air suspension fault

Hi people,
Can anybody please tell me where i find out some info on the air suspension fitted to my 92 LSE, as the 3 control buttons on the dash keep throwing up different lighting modes

I Would Have To Say First Look In The Manual For The Settings, Or Look At What You Have Set On The Dash Buttons. What Exactly Is It Doin? Is It While You Are Driving, At A Stop, When Do These Functinons Occur