Samsung Electronics 23No Parts Procedure Remark1 Panel 1) Remove 4 cover screws from the Hydro Unit.(Use + Screw Driver)2 Controller&Manometer1) Remove 3 screws from it.(Use + Screw Driver)2) Remove pressure sensor by adjustable wrench.(Use adjustable wrench-230kgf·cm)3) Pull the manometer out.4) Push the 2 hooks of cover.5) Pull the bottom of remocon body up.3-2-1 Hydro UnitॸAE160MNYD✳/AE090MNYD✳Be sure that the power switch is in the OFF and the power source cord shall be unplugged prior to disassembly and reassembly works.