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Error code reference

Daewoo Refrigerator Error Code F5

Defect compressor, gas leakage, defect freezing cycle, or defect F-sensor.

Daewoo codesDaewoo refrigerator codes

Defect compressor, gas leakage, defect freezing cycle, or defect F-sensor.

First step from the service manual

Check if F-sensor is good; verify resistance values of R021 and R022 on F-PCB; check if compressor is good; check if gas in freezing cycle has leaked.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
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What F5 means on a Daewoo refrigerator

The F5 error code on a Daewoo refrigerator signals a fault within the freezing system. The code can be triggered by one of four underlying issues: a defective compressor, refrigerant gas leakage from the freezing cycle, a fault in the freezing cycle itself, or a failed F-sensor (the freezer temperature sensor). The refrigerator's control board monitors temperature readings from the F-sensor and compressor operation continuously. When readings fall outside acceptable parameters or the sensor circuit fails, F5 is thrown to alert the user and technician that the freezing system is not functioning correctly.

Diagnosis begins at the F-sensor and the F-PCB. Technicians should measure the resistance values of resistors R021 and R022 on the F-PCB to confirm the board is processing sensor signals correctly. The F-sensor itself should be tested for proper resistance output across its expected temperature range. If the sensor and PCB resistors check out, attention shifts to the compressor. A compressor that fails to start, runs but does not build pressure, or draws abnormal current can produce this code.

If both the sensor circuit and compressor test within spec, the freezing cycle must be inspected for refrigerant loss. Gas leakage will prevent the system from reaching target freezer temperatures regardless of how well the compressor and sensors perform. A leak check of the refrigerant circuit, including evaporator coils and line connections, is required at this stage. Refrigerant-related repairs require certified HVAC or appliance technicians due to the handling requirements for refrigerants.

Source: manufacturer service documentation.

Common causes of F5

  1. 01

    Failed F-Sensor

    Part replacement

    The freezer temperature sensor can fail or drift out of range, sending incorrect readings to the control board. Testing the sensor's resistance output and checking resistors R021 and R022 on the F-PCB will confirm whether this is the source.

  2. 02

    Refrigerant Gas Leakage

    Part replacement

    A leak in the freezing cycle will prevent the system from reaching proper freezer temperatures even if the compressor runs normally. The refrigerant lines, evaporator, and connections must be inspected for leaks.

  3. 03

    Defective Compressor

    Part replacement

    A compressor that fails to start, runs without building pressure, or draws irregular current will trigger F5. The compressor should be tested for proper electrical operation and pumping capacity.

  4. 04

    F-PCB Resistor Fault

    Part replacement

    Resistors R021 and R022 on the F-PCB are part of the sensor signal circuit. If either resistor is out of spec, the board may misinterpret sensor data and generate a false or persistent F5 code.

  5. 05

    Defective Freezing Cycle Components

    Part replacement

    Other components within the freezing cycle, such as the expansion device or evaporator, can develop faults that prevent proper refrigeration even when the compressor and sensor appear functional.

See the test procedure for each cause

Frequently asked questions about F5

What does F5 mean on a Daewoo refrigerator?
F5 on a Daewoo refrigerator indicates a fault in the freezing system. The possible causes include a defective F-sensor, a failed compressor, refrigerant gas leakage from the freezing cycle, or a fault elsewhere in the freezing cycle. Technicians diagnose the error by checking the F-sensor, testing resistors R021 and R022 on the F-PCB, and inspecting the compressor and refrigerant circuit.
Can I fix an F5 error on my Daewoo refrigerator myself?
Some steps, like testing the F-sensor for visible damage or confirming the refrigerator is getting power, can be done at home. However, testing PCB resistors, diagnosing the compressor, and checking for refrigerant leaks require specialized tools and knowledge. Refrigerant handling in particular requires a certified technician. It is generally recommended to have a qualified appliance repair technician handle F5 diagnosis and repair.
Is an F5 error on a Daewoo refrigerator a safety concern?
The F5 error itself is not an immediate safety emergency, but it does mean the freezer is not cooling reliably, which can lead to spoiled food. If refrigerant leakage is the cause, the leak should be repaired promptly. Refrigerants used in household appliances are generally low-toxicity but should still be handled by certified professionals.
How much does it cost to repair an F5 error on a Daewoo refrigerator?
Repair costs vary significantly depending on the root cause. A sensor replacement is typically the least expensive repair, often ranging from $75 to $200 including labor. Compressor replacement is considerably more, commonly ranging from $300 to $600 or more. Refrigerant leak repair and recharging can range from $150 to $400 depending on the extent of the leak and the refrigerant type.
Will resetting my Daewoo refrigerator clear the F5 error code?
A reset may temporarily clear the F5 code, but if the underlying fault persists, the code will return. Resetting without addressing the root cause, whether a failed sensor, compressor issue, or refrigerant leak, will not restore proper freezer function. A proper diagnosis of all four potential causes is needed before the error can be resolved permanently.

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