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John, Home Appliance Technician
Category: Appliance
Satisfied Customers: 13453
Experience:  Appliance repair business owner for over 43 years.
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Model ABB2222FEB3 Serial KOO 335365 it keeps icing up, Model

Customer Question

model ABB2222FEB3 Serial KOO 335365 it keeps icing up
JA: What's the make and model? And can you guesstimate how old it is?
Customer: Model ABB2222FEB3 SErial Koo 335365 approx 5 years old
JA: Do you plan on doing the work yourself?
Customer: If possible
JA: Anything else we should know to help you best?
Customer: The freezer frosts up and cold air to the top shuts off I can shut it off and let it thaw and it is on for a while
Submitted: 1 month ago.
Category: Appliance
Expert:  Joel Swenson replied 1 month ago.

Hello, I'm Joel and will be glad to help you today.

Please give me a few minutes to review your question and prepare your answer as I may need to look up part numbers, schematics, etc;

Thank you for your patience.

Customer: replied 1 month ago.
OK will be here
Customer: replied 1 month ago.
Still waiting
Expert:  Joel Swenson replied 1 month ago.

every 8-12 hours your refrigerator goes into a defrost cycle to melt the ice off the evaporator coils

when this fails to happen due to a failed component of the defrost system the evaporator freezes up and becomes a block of ice, thus as say cuts off air flow to the top portion of the unit (the refrigerator compartment). The defrost system consists of a electronic control board that puts the unit into defrost, a defrost thermistor(temp sensor) in the freezer, a defrost-bi metal thermostat and a defrost heater.

Below I have linked you a download to the service tech sheet that I uploaded to my google drive account for you, follow the directions on the tech sheet and in service test mode run service test #1 and tell me what you get on the display so we can figure out what part of the defrost system has failed.

If it displays freezer 1 and refrigerator displays S. then the defrost bi metal is bad.

If it displays 1 - 0 its good.

let me know what you get, thanks.

Expert:  Joel Swenson replied 1 month ago.

just checking back in with you, any luck?

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