Supreme M4 only move forward

by Juan Jose
(Ramos Mejia, Buenos Aires, Argentina)

Hi, My Dolphin Supreme M4 robotic pool cleaner only moves forward (both in and out of the pool). I disassembled the motor and checked the Maytronics Diagnostic 2010 2410075LF Rev01 board, and I didn't find any damage or burnt parts. The power unit is working perfectly. It seems the diagnostic process isn't running, and I understand there must be a problem with the 2410075LF Rev01 board. Any suggestions? Thank you very much.

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