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Haier
Refrigerator
Data independently verified by Elite B2B Technicians
Diagnostic Complet

Error Code E4 Haier

Symptom / Description

Communication error between main board and display

Root Cause

The wiring between the main control board and the user interface/display board is loose, damaged, or one of the boards has failed.

Repair Instructions

UNLOCKED

Inspect the wiring harness connecting the two boards. If connections are secure, one of the boards may need replacement.

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