Servolift, Model RF-11M, sSerial #09/03232985-1, R404A
independent systems.

Cabinet temp 0deg

freezer side suction line freezing up.
suction pressure 18lb. suction line temp ranging from 31deg to -14deg.
8deg DT across the condencer.

Is this large range of suction line temp a sight of a low charge and that's what's causing the suction line to freeze up?

I did do a leak check and found nothing.