In your refrigerators case I believe the Click Here=> 10674902401 Kenmore Refrigerator Parts in that photo you may need to click to enlarge depending on what type computer you use. Item number 4 is=> 2304146 Control Board this is a defrost control board found behind the controls just above the top shelf inside your fresh food section and behind the controls. Many times you may find burn marks that indicate that the board is defective. Always disconnect power to refrigerator before working with electrical parts. This is the most likely cause for your refrigerator not defrosting but only the first thing of three parts to examine. Click here=> Here you will see item Whirlpool Bi Metal and Defrost Components Photo behind the rear panel of your freezer rear panel. The defrost Thermostat is=> 4387503 Defrost Thermostat and=> 2315531 Defrost Heater Assembly To make things simple begin by looking over the Defrost Control Board first. Ask me questions and I will help you should you have any questions, Thanks, Sea Breeze
. First try manual
defrost reset procedure. The procedure is as follows: ----
First unplug the unit
from main power outlet. Then empty whole unit completely. Then keep both the
doors open. Wait for 24 hours. All the ice collected on the coils and in the
freezer section will get melted. Clean the water from the sections.
Then Connect the power cord of the unit to main power outlet after 24 hours/.Then
set the temperature to normal in both fridge and freezer section. It will take
near to 4 hours to get run in its proper cooling cycle. Then check, if the
problem returns again. Then its defrost board problem. -------------
If it's again building up ice that means the unit is not defrosting. It's starting the cooling procedure, and then while defrosting, it's not working. The defrost assembly consists of three main parts. The defrost thermostat, the defrost heater and defrost board. Any of the one is not functioning. When thermostat sense the maximum cooling, it triggers the defrost heater to start heating and this defrosts the ice collected on the coils and the system works. Both thermostat and heater are controlled by defrost board. First the thermostat and defrost heater to be checked, if both check ok by meter and visually, then its defrost board causing the problem. You can get required parts from from online sites like: --- www.repairclinic.com or from searspartsdirect online site. --------- This should help.Thanks.Helpmech.
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