Mitsubishi Electric MLP-444WU Manuel D'installation page 37

6) Seal the gap between the optional part and the electrical box with tape, etc.
7) Reinstall the indoor control board and the electrical cover (1), (2).
8) Reinstall the grille.
Fix the connecting cable at the prescribed position securely.
Incorrect installation may cause electric shock, fire, and/ or malfunction.
WARNING
connecting cable
seal
En-12