Hisense BCD-740WPCZR/HC1(H) Service Manual page 27

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4.4.2.4 Ice maker error
Eb error :
1. Check the connecting wiring between main-board and ice maker (corresponding pin No.
2~10 on CN7 & CN5 connector of main-board, as the drawing below) and repair if it is
broken.
4.4.2.5. Communication error
Ec or Er error:
Note:
The display panel corresponding pin No.14、 No.16、 No.17and No.19 on CN8 connector of
the main-board as the drawing below.
Hisense Refrigerator