Sub-Zero Freezers Not Cooling Repair in Stone Mountain

When a Sub-Zero freezer shows door not sealing, the cause is often Gasket material hardened or cracked from age and repeated use, Gasket pulled out of mounting channel, and Door hinge or lid hinge bent, worn, or out of alignment. Our factory-trained Stone Mountain technicians diagnose and repair using genuine OEM Sub-Zero parts.

When a Sub-Zero freezer shows water pooling on floor, the cause is often Drain plug on chest freezer removed, cracked, or not seated properly, Drain hose disconnected or kinked preventing water from reaching drain pan, and Door gasket leak causing condensation to run down exterior and pool. Our factory-trained Stone Mountain technicians diagnose and repair using genuine OEM Sub-Zero parts.

When a Sub-Zero freezer shows freezer over-freezing or too cold, the cause is often Electronic temperature sensor sending falsely high (warm) signal — board compensates by over-cooling, Evaporator fan directing excessive cold airflow directly onto stored items, and Thermostat calibration drift — set point reading and actual control point separated. Our factory-trained Stone Mountain technicians diagnose and repair using genuine OEM Sub-Zero parts.

When a Sub-Zero freezer shows excessive frost buildup, the cause is often Auto-defrost control board malfunction, Defrost heater burned out or open circuit, and Defrost thermostat failed — not signaling heater to turn on. Our factory-trained Stone Mountain technicians diagnose and repair using genuine OEM Sub-Zero parts.