Why does the number goes down so fast and not drying?
Answer Hello Frantz. You need to check and see if the vent is clogged and needs to be replaced on the unit.
my maytag neptune lower dryer heat does not come on. upper air dryer has heat. all other controls and functions are fine. no error messages.
You will want to check your thermal fuse for the lower dryer for continuity and test the thermostats as well. If they do not have continuity then they will need to be replaced. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html