Error code · Washer-Dryer Combo

Samsung Laundry Combo Code SUD: Foam Detected, Then End

Low risk · DIY check OK

Code: SUD
Appliance: Washer-Dryer Combo
Brand: Samsung
Warranty: 30-day workmanship

What SUD means

On the Samsung WD53DBA900H-series Bespoke AI Laundry Combo, such as the WD53DBA900HZA1, SUD means foam was detected in the drum. It also shows while the unit is removing the foam, and the display shows End when the removal has finished. This is normal operation rather than a breakdown. You will see SUD during a wash, often after using too much detergent.

Common causes of SUD

Too much detergent or the wrong type
Heavy foaming from soiled or very soft-water loads
Foam sensing working as designed

✓ One safe check you can try

1. Let the unit finish removing the foam. Do not stop it midway unless water is leaking. 2. Wait for End to show. 3. Next time, use the amount of detergent marked on the container for the load. 4. Use a detergent made for this type of unit. 5. If SUD keeps appearing with small amounts of detergent, call us.

! Why to stop there

If SUD repeats with little detergent, we cannot tell from the display whether the sensor or the water supply is behind it.
We check the sensor reading and the rinse circuit before suggesting a part.
If the unit needs work, you see the written price in advance, and workmanship is warranted for 30 days.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Washer-Dryer Combo codes

DC6Samsung Laundry Combo Code DC6: Auto Open Door and SmartThings HCSamsung Laundry Combo Code HC: Heater Error or Hot Compressor LCSamsung Laundry Combo Code LC: Leak Detected NCSamsung Laundry Combo Code NC: Check the Filter NC2 / NC3Samsung Laundry Combo NC2 / NC3: Cover or Kit Missing OCSamsung Laundry Combo Code OC: Overflow, Water Level not Controlled SDCSamsung Laundry Combo Code SDC: Drawer Door Lock SFSamsung Laundry Combo Code SF: System Error on the Controller

SUDSUD questions

Is SUD an error?

Not really. It tells you foam was detected and is being removed. When removal is finished, End appears and the cycle continues normally. No repair is needed in that case, and you can leave the unit alone until it finishes.

How do I avoid SUD?

Use less detergent and a type suited to this machine. Too much soap is the usual cause of foam. Measure the detergent each time and avoid adding extra for large or heavily soiled loads, since that is where foam usually starts.

When should I call you about SUD?

If it shows repeatedly with a small, correct amount of detergent, or the unit leaks foam, we inspect the sensor and drain path. We would also check how much detergent is being used, since that is the usual cause.

Book a visit

Still unsure about SUD?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 561-5298