no digital read out on LCI 6 pt leveling ?

Put my unit in storage the other day after coming off the road Full-time,(Daughter due w/ baby) and went back today to clean out the groceries and I put the battery in to bring out the slides and LCI started beeping - I hit the ON button but no read out? I seen that the front was low as the indicator light did show that, hit that button an lifted front of 5'ver till it was level, but still no readout shut system off and went about my business. Beeping must mean not level (been uneven prior-no beeping) and what's up w/ no readout?

TIA