Samsung Washer Error Code UC: How to Fix It

Easy 15-45 minutes Medium Severity Verified June 2026
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Error Code
UC
Brand
Samsung
Product Type
washer
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-45 minutes
Error code UC on your Samsung washer means the machine detects that the power voltage is out of the normal range (too high or too low). This usually happens due to electrical supply issues such as a tripped breaker, loose power cord, or unstable voltage from your home's electrical system. Don't panic — most causes are easy to fix without a technician.
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Tools You'll Need

How to Fix Error Code UC

  1. Reset the Washer

    Always unplug the appliance before performing any electrical checks.

  2. Check the Power Cord and Outlet

  3. Test the Voltage at the Outlet

    Be careful when using a multimeter around live electrical outlets.

  4. Inspect the Circuit Breaker

  5. Check for Loose Wiring Inside the Washer

    Unplug the washer before removing any panels. If you're not confident, skip this step and call a professional.

  6. Test the Main Control Board

    Working on the control board can be hazardous. Consider professional help if unsure.

Parts You May Need

Main control board (PCB)
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Main control board (PCB)
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Main control board (PCB)
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Main control board (PCB)
Check Price on Amazon
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When to Call a Professional

If you have tested the outlet voltage and it's within range, but the error persists after a reset and careful inspection of wiring, the control board likely needs replacement. Also call a pro if you are uncomfortable working with electricity or opening the washer.

Frequently Asked Questions

What does error UC mean on a Samsung washer?
Error UC indicates a voltage supply problem. The washer's control board detects that the incoming power is either too high or too low, often due to a tripped breaker, faulty outlet, or unstable home voltage.
Can I reset the UC error on my Samsung washer?
Yes, unplug the washer for at least 5 minutes (or turn off the breaker) to reset the control board. After plugging it back in, the error should clear if the voltage issue is resolved.
Is a UC error dangerous?
The error itself is not dangerous, but it indicates a potential electrical problem. Always unplug the washer before inspecting. If you suspect faulty wiring in your home, consult an electrician.
Do I need a new control board for UC error?
Only if the voltage is correct and all connections are secure. The control board can fail internally. Replacement is a moderate DIY task but may require a professional for proper installation.
How much does it cost to fix Samsung washer error UC?
DIY fixing can be free (if it's just a breaker reset). A multimeter costs $15-30. If the control board needs replacement, the part is around $100-250 plus labor if a technician is called.

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