What Does Monogram Washer Error Code SUD/SD Mean?

The SUD or SD error code on a Monogram washing machine means excess suds have been detected. The washer pauses the cycle and adds extra rinse time to break down the foam before continuing. In severe cases, it will stop entirely until suds dissipate.

Common Causes

  • Too much detergent – Using more detergent than the cycle requires is the most common cause.
  • Wrong detergent type – Using regular (non-HE) detergent in a high-efficiency Monogram washer produces far too many suds.
  • Detergent residue buildup – Old detergent residue in the drum re-activates and creates extra foam.
  • Soft water – Very soft water increases sudsing — reduce detergent dose accordingly.

How to Troubleshoot

  1. Wait – Allow the washer to complete its automatic anti-suds routine. Do not open the door.
  2. Use HE detergent only – Switch to a detergent marked “HE” and use the correct dose for your load size and water hardness.
  3. Run a drum clean cycle – Use a washing machine cleaner tablet or run a hot cycle with no detergent to flush residue.

When to Call a Professional

If SUD/SD appears even with correct detergent use, a foam sensor or control board fault may be the cause. Call 844-752-7887 for diagnosis.

Need Help? If the error code hasn't resolved after basic troubleshooting, call our certified Monogram technicians at 844-752-7887 for professional diagnosis and same-day repair.