FIXED Kitchenaid side by side - KRSC503ESS - icing behind produce drawers and is warm

maximus44

Member
Joined
Jun 12, 2019
Messages
4
Location
san jose
Model Number
KRSC503ESS
Brand
KitchenAid
Age
1-5 years
I have a kitchenaid - KRSC503ESS. The back lower panel is iced up and my fridge is starting to warm. The freezer is cold, Ice cream is hard. There is ice, etc... My fridge is about 45 deg now. I took everything out and took off the panel. The coils are frozen. I didn't hear the fan running many times when I checked. It sounded like it did come on one time.
- Do I need to replace the fan and how do I get the Styrofoam casing out of the refrigerator.
- Also, I saw online some people wrote that repairman replaced both the fan and the thermistor. Should both be replaced at the same time Where is the thermistor located....

I am a general contractor and possess the ability to fix many things given some guidance.
Would really appreciate some assistance. It's so frustrating that it's only 2 years old.

Thanks.
 

maximus44

Member
Joined
Jun 12, 2019
Messages
4
Location
san jose
Also is there a way to turn off just the refrigerator side and leave on the freezer while doing the deicing and replacement...
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
100,764
Location
McMullen Valley, Arizona
Hi,

Let's first see if your getting power to the refrigerator fan motor, you can use your multimeter and take the volt readings from the main control board, which is located in the back of your refrigerator after you pull it out from the wall you will see a access panel that covers it, just remove that access panel then you will see it.

On the main control board, At the wire harness connector labeled P14 pin 3(blue wire) and pin 4(gray) you should be getting 14 volts DC

If your getting 14 volts DC at those pins and the fan in the refrigerator section is NOT running, then its bad.

Here's the refrigerator fan motor assembly for your model:

I posted the parts diagram and tech data sheet for your model below.

Let us know what you find.
 

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Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
100,764
Location
McMullen Valley, Arizona
Ok, the evaporator coil in the refrigerator section does not have a defrost heater, it defrosts per that fan motor.

#4 is your evaporator fan motor thermistor in refrigerator section. That could be bad and causing that fan motor not to run when it should be running.

You'll need to ohm test that thermistor.

Here's that thermistor for your model:
W10316760 Thermistor


To test it, unplug the refrigerator from the wall outlet first, then you ohm it with a multimeter, you put the thermistor in cup of ice water for 5 minutes and it should read about 8.7 K ohms.

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
100,764
Location
McMullen Valley, Arizona
Excellent, glad to hear the new thermistor fixed it.:)

Thanks for the update!

Jake
 
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