Why Is My Refrigerator Freezing Food in the Fresh Food Section?

• Check temperature setpoint; ideal fresh food setting is 37°F (3°C) and freezer is 0°F (-18°C).
• Ensure food packages on top shelf are not pushed directly against cold air diffuser vent.
• Ensure return air ducts at bottom and sides of fresh food compartment are not blocked by food containers.

• Motorized air damper door stuck wide open, dumping 0°F sub-zero freezer air into fresh food cavity.
• Fresh food NTC thermistor drifted out of specification, falsely reading high temperature.
• Main electronic power control board failing to de-energize inverter compressor.

The refrigerator utilizes a single cooling evaporator in the freezer. A motorized plastic damper baffle door modulates to regulate cold air into the refrigerator. If the damper stepper motor or nylon gears strip while open, continuous 0°F air freezes all fresh food.

The temperature thermistor measures cavity temperature. If internal resistance drifts high (falsely signaling 55°F when actual temp is 32°F), the master control board runs the compressor and damper continuously.

Air must circulate down into lower return vents back to the freezer. If return ducts are blocked by vegetable crisper ice buildup, cold air accumulates and stratifies at freezing temperatures in lower crisper drawers.

Cardboard egg cartons or glass milk jugs stored directly in front of the top-shelf air vent intercept high-velocity 15°F air directly off the evaporator coil, freezing instantly.

On mechanical relay boards, contacts can weld closed during high inductive inrush current, leaving the compressor running 100% of the time regardless of thermistor temperature commands.