KitchenAid 2209477 Use & Care Manual page 26

The divider between the two compartments is warm
Check if ...
The condenser coils or base grille are dirty or clogged.
The motor has quit working.
Temperature is too warm
Check if ...
The door(s) are opened often.
A large amount of food has just been added to
the refrigerator or freezer.
The controls are not set correctly for the surrounding
conditions.
There is interior moisture build-up
Check if ...
The door is opened often.
The room is humid.
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Then ...
Clean according to the "Cleaning your refrigerator" section.
See "Your refrigerator will not operate" earlier in this section.
NOTE: The refrigerator temperature may turn from warm
to hot.
If not due to any of the above, the warmth is probably due
to normal operation of the automatic exterior moisture
control. If still concerned, call the Consumer Assistance
Center or an authorized KitchenAid service company.
Then ...
Be aware that the refrigerator will warm when this occurs.
In order to keep the refrigerator cool, try to get everything
you need out of the refrigerator at once, keep food
organized so it is easy to find, and close the door as soon
as the food is removed.
Adding a large amount of food warms the refrigerator.
It can take several hours for the refrigerator to return to the
normal temperature.
Refer to the "How controls work" section.
Then ...
To avoid humidity build-up, try to get everything you need
out of the refrigerator at once, keep food organized so it is
easy to find, and close the door as soon as the food is
removed. (When the door is opened, humidity from the
room air enters the refrigerator. The more often the door is
opened, the faster humidity builds up, especially when the
room itself is very humid.)
It is normal for moisture to build up inside the refrigerator
when the room air is humid.