My Kenmore bottom freezer 3door refrigerator. Gets ice buildup r

O need a repair manual for Kenmore 795 72312

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Please verify the model number of the refrigerator as I can't find any information on models beginning with 795 72312?

Where is the ice build up occurring?

If it the freezer compartment it's sounding like a defrost problem - heater, thermostat, blocked drain, timer (or control board)

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