LG WM3677HW Owner's Manual page 17

Water Circulation
The recirculation pump circulates the water during
most of the cycle. During the WASH cycle, it runs
continuously for 3 minutes and then intermittently
throughout the cycle. During the RINSE cycle, it runs
continuously as soon as the appropriate amount of
rinse water has been added. This recirculated water
enters the drum at the top of the door at a small shower
head. This spray not only keeps the window and
gasket clean, it allows the clothes to be soaked with
detergent more quickly and can be used to control an
oversudsing event.
WM3677HW p10