“What does the error code E4 mean because of course it's not listed in the manual?”
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Hi there! As per checking with the E4 error code, it shows that it is the defrost sensor fault and we do not recommend repairing the unit by yourself. You may send us an email [email protected] for further assistance. We'll be more than happy to assist you regarding this matter. Insignia Support Angela www.insigniaproducts.com/support
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