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KevinWhiteJA, Home Appliance Technician
Category: Appliance
Satisfied Customers: 7796
Experience:  18+ years experience as Appliance Tech.
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I have a Zanussi fridge freezer where the fridge builds up

Customer Question

Hello. I have a Zanussi fridge freezer where the fridge builds up ice and freezes. Has the thermostat gone? Model zR8934FX2. 92034517-02.
JA: How old is your Zanussi fridge?
Customer: probably over 10 years. Bought second hand
JA: How long has this been going on with your Zanussi refrigerator? What have you tried so far?
Customer: About three weeks. Tried clearing the drain and rear of fridge and defrosting completely. Will replacing the control unit help. Frost build up is at rear of fridge
JA: Anything else we should know to help you best?
Customer: That’s all.
Submitted: 10 days ago.
Category: Appliance
Expert:  KevinWhiteJA replied 10 days ago.

Good day and Welcome to Justanswer,

My name is ***** ***** I will assist you today.

I am sorry to hear you are having trouble with your Zanussi Fridge Freezer.

Expert:  KevinWhiteJA replied 10 days ago.

Please allow few minutes while I check its schematics and then type the answer.

Expert:  KevinWhiteJA replied 10 days ago.

This indicates temperature issue and/or an air flow problem due to heavy ice build-up inside the rear wall of the appliance.

Please try this to solve the issue:

Leave it unplugged and empty with door open for around 12-24 hours.

Then plug it back (expect some water on the floor) and wait for another 4-8 hours so it gets back to optimum temperature.

The problem should be resolved.

However, if the issue appears again then the problem is with defrost operation.

You will have to test/replace the temperature sensor and/or defrost heater element to resolve the issue.

Alternatively, you may call Zanussi at 03445 610 645 to book repair.

If there is anything else I can help you with, please let me know.

Customer: replied 10 days ago.
Thanks Kevin. As I mentioned we did defrost and wait 48 hours to start again but it continued. How do you test the temperature sensor/defrost heater. Presume replacing control unit won’t help?
Expert:  KevinWhiteJA replied 10 days ago.

OK sure, please provide its correct model number and PNC number as I cannot pull up anything with Model zR8934FX2. 92034517-02.

Customer: replied 10 days ago.
Thanks. Yes
I did misstype. Model ZRB934FX2 Prod.###-##-####02
Expert:  KevinWhiteJA replied 10 days ago.

Thank you.

Please check this IMAGE (part#42 is defrost heater and part#43 is thermostat).

If any of this is faulty these issues may occur.

I believe the control unit is fine and not causing this issue.

If you want to test/replace it yourself then unplug the appliance and remove the rear wall and then test these parts with a multi-meter for open circuit, replace the part that is faulty.

Customer: replied 10 days ago.
Thanks Kevin.
Expert:  KevinWhiteJA replied 10 days ago.

You're welcome and Good Luck.

I hope I was able to answer your question.

If you would like to ask me another question in the future, you can add me as a favorite Expert.

You'll have the option to do that on your "My Questions" page if you choose to rate our interaction or you can request me by name if you wish.

Have a wonderful day.