Hi
The limit switch is found only on frost-free refrigerators and freezers. Its function is to keep the defrost heating element from exceeding certain set temperatures. If a refrigerator has lots of frost in the freezer compartment, the problem may be the limit switch. However, other components -- the evaporator fan, the defrost timer, and the defrost heater -- can cause the same problem. Check these for malfunctions, as detailed below. If these parts are in working condition, the problem is most likely in the limit switch. Don't try to fix the limit switch yourself; call a professional service person for replacement.
Your
MTB1553ARA Refrigerator sounds to me like it is not defrosting properly. Look
inside the freezer along the back wall and see if a layer of snow is building
from top to bottom. To test if defrost will work open the fresh food
compartment and look for a small opening were you can turn the defrost timer
slowly clockwise until compressor and fans stop running. Click here=> MTB1553ARA
Fresh Food Section Control Panel and in that photo you will see the=> 68233-2 Defrost Timer that
has a dial in the center I need you to turn clockwise. After the compressor and
fans stop I want you to allow the refrigerator to remain off as it is for 30
minutes. The freezer should now be defrosting and if after thirty minutes the
refrigerator does not restart on its own then again turn the timer again slowly
until it does restart. If you need to restart the fridge this way then the problem is the
68233-2 Defrost Timer Next I will detail how to install the 61001946 Defrost Heater and the=> 61005254 Defrost Thermostat
if the defrost timer is not the reason for this happening. Here is a MTB1553ARA Parts Manual PDF Let me know here how the defrost timer test goes, Thanks Sea Breeze
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