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Error code reference

GE Refrigerator Error Code 0304

FZ temperature exceeds 20°F over setpoint, 1-hour post defrost or door opening.

GE codesGE refrigerator codes

FZ temperature exceeds 20°F over setpoint, 1-hour post defrost or door opening.

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What 0304 means on a GE refrigerator

Error code 0304 on a GE refrigerator indicates the control board has detected that the freezer compartment temperature has risen above 25°F. This threshold is significant because it means the freezer is no longer maintaining safe food storage conditions. The control board monitors the freezer thermistor continuously, and when it reads a sustained temperature exceeding this limit, it sets code 0304 to alert the user and technician that the refrigeration system is not performing within specification.

For homeowners, this code means your freezer is too warm. Food stored at temperatures above 25°F is at risk of partial thawing, which can compromise food safety and quality. The freezer should normally operate between 0°F and 5°F. When this code appears, the underlying cause could range from something simple like a blocked condenser coil or a door left ajar, to a more serious mechanical failure such as a failing compressor, a refrigerant leak, or a defective evaporator fan motor that is no longer circulating cold air through the freezer.

Do not ignore this code. Even if the freezer feels cool to the touch, temperatures above 25°F are outside the safe range for frozen food storage. Inspect the unit promptly to determine the root cause before more significant damage occurs or food is lost.

Source: manufacturer service documentation.

Common causes of 0304

  1. 01

    Evaporator fan motor failure

    Part replacement

    The evaporator fan circulates cold air from the evaporator coils into the freezer compartment. If this motor fails or seizes, cold air stops moving and freezer temperatures rise quickly above the 25°F threshold.

  2. 02

    Heavy frost buildup on evaporator coils (defrost system failure)

    Part replacement

    A failed defrost heater, defrost thermostat, or defrost control can allow frost to accumulate on the evaporator coils until airflow is fully blocked, preventing the freezer from reaching or holding proper temperature.

  3. 03

    Condenser coils heavily fouled with dust and debris

    Wiring / connection

    When condenser coils are clogged, the refrigerant cannot release heat efficiently, reducing the system's cooling capacity and causing the freezer temperature to drift upward beyond 25°F.

  4. 04

    Low refrigerant charge or refrigerant leak

    Part replacement

    A refrigerant leak causes the sealed system to lose cooling capacity gradually or rapidly. This results in the freezer being unable to pull down to safe temperatures, triggering code 0304. This repair requires an EPA-certified technician.

See the test procedure for each cause

Frequently asked questions about 0304

What does error code 0304 mean on a GE refrigerator?
Code 0304 means the GE refrigerator's control board has detected that the freezer temperature has exceeded 25°F. This is above the safe threshold for frozen food storage. The code is triggered by the freezer thermistor reading and indicates the refrigeration system is not maintaining adequate cooling in the freezer compartment.
Is it safe to keep food in my GE refrigerator while code 0304 is active?
No, it is not safe to rely on the freezer for food storage while this code is active. A freezer temperature above 25°F means frozen foods may be partially thawing, which creates food safety risks. Move frozen items to another freezer or use ice if available, and address the underlying cause before restoring normal use.
How do I fix error code 0304 on a GE refrigerator?
Start by checking the basics: confirm the freezer door seals are intact, the condenser coils at the back or bottom of the unit are clean, and the evaporator fan is running when you open the freezer. If frost has built up heavily on the back wall of the freezer, the defrost system may have failed. If none of these are the issue and the compressor is running but not cooling, a refrigerant leak or sealed system failure is likely, which requires a certified technician.
How much does it cost to repair GE refrigerator error code 0304?
Cost depends on the root cause. Cleaning condenser coils costs nothing if you do it yourself. Replacing an evaporator fan motor typically runs $80 to $200 in parts, with an additional $100 to $150 in labor if professionally repaired. Defrost system components such as the heater or thermostat are generally $20 to $60 in parts. Refrigerant leak repair or sealed system work can cost $300 to $600 or more and must be performed by an EPA-certified technician.
Will code 0304 clear on its own after the freezer cools back down?
On most GE models, this code will clear once the freezer thermistor reads a temperature back within the acceptable range. However, if the underlying cause has not been fixed, the temperature will rise again and the code will return. A recurring 0304 code confirms a persistent mechanical or component failure that needs to be diagnosed and repaired rather than simply reset.

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