What should I do if the WTW6200SW displays an 'Sd' suds detection error?

The 'Sd' code means excessive suds have been detected, usually caused by using too much detergent. The washer will automatically run a suds reduction routine at the end of the wash cycle to remove extra suds and ensure proper rinsing. If the code remains after the recovery routine, re-select your desired cycle using cold water and press START — do not add detergent. Always measure detergent carefully and follow the detergent manufacturer's directions. (Page 19)