The lid on both units should be left open to prevent mold and mildew. Closing the lid even when dry will leave a stale smell in the machines. Just an fyi.
Hi from Auz, use only HOT water 70 to 85 degrees Celsius NOT cold WATER. Washes under pressure as the rotating HOT water expands the trapped cloths fabric weave allowing easier dirt removal also the air expands as well building even more pressure hence the special lid. So try to get A even ratio of clothes, air and water for best results. Low suds soap best i.e. top loader. SAFTEY first never use boiling or scolding hot water.
The wonderwash is supposed to have hot water so the hot water heats up the inside trapped air which is how the magic happens. I wud never bother to do a wash in cold water.
