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Haier Refrigerator Error Codes

3 error codes with causes and step-by-step fixes

Code	Meaning	Severity	DIY	Est. Cost
F1	Temperature sensor failure — freezer compartment	⚠ Medium Severity	moderate	$15–$40
F3	Defrost sensor failure	⚠ Medium Severity	moderate	$15–$40
F6	Communication error — control board fault	⚠ Medium Severity	hard	$80–$200