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Description:

Hardware failure of CDU; programming error when CDU initializes

Resolution:

  1. Check CDU setup (Operator Function menu > System Setup > Device Setup > CDU Setup).

  2. Check connections from main board to CDU and all CDU cables.

  3. Check the main motor.

  4. Check the CDU circuit board.

  5. Check incoming voltages at the CE board.

  6. Replace CDU main board.

Models: