If everything works except fill the machine probably thinks it is already full
This would be caused by your the fill/level pressure switch
Here is the parts breakdown Maytag LAT8405AAE
Look at Item 21 switch,pressure in the Control Panel section
The way these work is a tube runs from the switch assy down to the bottom of your tub. As water fills the tub, it also fills the tube, this increases the air pressure in the tube, when the correct level/pressure is reached the switch activates and shuts the water off, plus now provides power to timer etc. |