Electrolux ELFW7537 front-load washer shows excessive suds, SUD or Sd behavior

The checks in more detail

Do not open the door while the drum is full of foam; wait for the door to unlock, and if suds are escaping, wipe them up. Let the washer sit for half an hour so that the foam settles, then run a Rinse and Spin or a drain-and-spin cycle with no detergent, repeating if suds remain. The reason is usually the detergent. Use a high-efficiency detergent labeled HE, in the amount on the bottle for the size of the load, which is far less than an old guide; for a small load use less, and for soft water use less still.

Fill the compartment only to the line. Do not use ordinary non-HE detergent, which foams heavily, and do not add extra soap for dirty loads, since too much leaves residue and makes the rinse fail. Pods go in the drum, not in the dispenser, and one is enough. Dishwashing liquid and hand soap are not laundry detergent and can cause enormous foam. Look at other causes. A washer that is dirty inside holds a film of old detergent that builds suds, so run a Tub Clean or Self Clean cycle with a washing machine cleaner, and wipe the door gasket.

Hard water needs more detergent, but soft water needs less, so adjust for yours. Overloading prevents rinsing. If the foam appears even with little detergent, check for a leftover from a previous load, such as fabric softener built up in the dispenser, and rinse it. The ELFW7537 has a LuxCare wash and steam, and steam cycles do not cause foam; it is the soap. After a foam event, run an empty rinse cycle to be sure. If the washer reports an error that persists after the suds clear, contact Electrolux with the model and serial number.