Hi.
When the fridge is not cooling , and the coil at the back is freezing, the problem is always the defrost system.
The defrost system function is to prevent the condenser coils from freezing.
When the condenser coil is frozen, the unit will not cool down anymore, as heath connot be pumped out of the fridge and freezer.
The defrost system comprises of a defrost thermostat, a fan, and an heating element, and it is located behind the freezer firewall.
In the example below, taken from my daily Fixya solutions I will use a Kenmore side by side
363.50227000.
If your model is different, then you will need to order parts for your model, do not use the parts below. To find parts , try
Sears, or see:
Where do I find parts and diagrams for my...Also diagram and parts location may differ.
Here a diagram, click on the picture to enlarge:
Here parts to be tested, click on the link to purchase part:
Defrost thermostat (part 240 on diag)
Is tested removing it from the unit, after disconnecting power firts. Test is done using a multimeter set at Rx1 (Ohms).
Ifthe part is good the multimeter will read low or zero impedance at roomtemperature, if thermostat is bad, it will stay open (infinity).
Heater (part 230)
Itis tested reading Ohms , similarly to thermostat, if the heater hascontinuity, then it is good, if circuit is open, it must be replaced.
evap fan asm (Part 613)
It is tested energizing the motor, and observing if it is working.
Thesystem can also be tested by jumping the defrost thermostat, and observing if the element is heating up and the fan working.
for safety reasons, all testing and repair must be done by a trained person.
Before attempting repair, better contacting Kenmore after sale service at the number listed on your owners Use and Care manual.
Ginko.
