My mabe refrigerator freeze the freezer but does'nt cold the botom portion

SOURCE: anama bottom freezer

Chances are if they are getting cool -

1) the evaporator fan in the freezer is not running
2) Defrost heater has failed
3) Defrost sensor has failed
4) Defrost timer/refrigerator control has failed.

Check for ice build-up on the back wall of the freezer. If there is ice, unplug or turn the unit off for 6-8 hours with the doors open (put any food in a cooler with ice to maintain). Note water may come out of the refrigerator/freezer.
Plug the unit back in or turn it back on, close the doors, and check temperature after a couple of hours of operation. If all OK, you will need to have the above tested, or, if you know how to use a multimeter and can read a schematic/wiring diagram, I can instruct you on how to check the above.

SOURCE: whirlpool conquest 2001 GS6SHAXKQ01 refrigerator side by side top part is not cooling

the first one sounds like it is slowly leaking freon.

•  the second Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.
  
• possible causes:

1. bad defrost timer/control board
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

SOURCE: Sub zero refrigerator freezes food

Hello. You need a new cabinet thermistor and while you are at it replace the evaporator thermistor. (The evaporator is the cooling coil behind the back wall of your fresh food section) . These sense the temperature in your frig. Both of them are behind the back wall of your fresh food compartment. You will need a wire crimper and a heat gun or lighter to heat shrink the wire connectors that come with the new ones.

SOURCE: not cooling or freezing

bimetal switch not working. change it.

SOURCE: Kenmore 596.72913200 refrigerator cold, freezer cold but not freezing

good day,
hope this link below will solve your problem.

ref