LCD Display problem

Hi guys, I'm doing a project that use solar panel dual axis tracker with labview, my labview can choose to use auto mode, or manual mode to control the solar panel motor, im using 2 servo motor(one horizontal one vertical). my lcd can display in auto mode. like voltage value, current value. but when i use manual . it wont display it. please help me, thanks !!

Solar_Charge_jiale.ino (10.7 KB)

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