What are the symptoms of error code UC?

Washer stops mid‑cycle and displays UC, Washer powers off unexpectedly during operation, Cycle restarts or pauses without user input, Lights flicker or dim when the washer runs, Washer refuses to start after pressing the Start button

What causes error code UC?

Low household voltage or unstable electrical supply, Loose or partially plugged‑in power cord, Faulty outlet or weak circuit, Overloaded electrical circuit shared with other appliances, Temporary voltage drop in the home

How do I fix error code UC?

Ensure the washer is plugged directly into a grounded wall outlet., Avoid using extension cords or power strips., Reset the circuit breaker and test the outlet., Move the washer to a dedicated electrical circuit if possible., Restart the washer after stable power is restored.

Samsung Washer - UC Error Code

Washer detects unstable or insufficient power.

Meaning

Washer detects unstable or insufficient power.

The UC error indicates that the washer has detected unstable, low, or inconsistent electrical voltage. Samsung explains that this code appears when the washer is not receiving proper power from the outlet, when voltage drops occur, or when the internal control system senses irregular electrical supply. The washer pauses operation to protect the motor, control board, and heating components from damage caused by fluctuating voltage.

Symptoms

Washer stops mid‑cycle and displays UC
Washer powers off unexpectedly during operation
Cycle restarts or pauses without user input
Lights flicker or dim when the washer runs
Washer refuses to start after pressing the Start button

Causes

Low household voltage or unstable electrical supply
Loose or partially plugged‑in power cord
Faulty outlet or weak circuit
Overloaded electrical circuit shared with other appliances
Temporary voltage drop in the home

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Step-by-Step Fixes

Ensure the washer is plugged directly into a grounded wall outlet.
Avoid using extension cords or power strips.
Reset the circuit breaker and test the outlet.
Move the washer to a dedicated electrical circuit if possible.
Restart the washer after stable power is restored.

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Safety Notes

Do not operate the washer during brownouts or visible power fluctuations.
Unplug the washer before inspecting the outlet or power cord.
Avoid touching electrical components with wet hands.

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Applicable Models

Show Models

6000 Series: WW25FG6B34BBAC
5000 Series: WW25FG5B34BEAC

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Other Samsung Washer Error Codes

Show All Error Codes

Model-Specific Notes

The WW5000F/B700 platform automatically drains for 3 minutes when 4C or related water-supply errors appear, and the power button is disabled during this period.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.