true evap coil freezing up
Model number of your case would be nice. Otherwise I don't have any idea as to whether it is open or closed, horizontal or vertical. Type of control. How it is designed to manage ice build up.
Generically, Door gaskets, over use (doors kept open to long)or excessive warm product added), air flow of condenser, Thermostat set to cold, Fans not working. Are all common
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