Hitachi RCI-1.0FSN4 Service Manual page 261

9 Servicing
9.8.2 Removal of the inlet and outlet air thermistors ............................................................................................ 303
9.8.3 Outlet air thermistor ..................................................................................................................................... 304
9.8.4 Removal of the fan parts ............................................................................................................................. 305
9.8.5 Removal of the float switch ......................................................................................................................... 306
9.8.6 Removal of the air filter ............................................................................................................................... 306
9.9 RPK-FSN(H)3M - Wall mounted ......................................................................................................... 307
9.9.1 Removal of the air filter ............................................................................................................................... 307
9.9.2 Removal of the front panel .......................................................................................................................... 307
9.9.3 Electrical Box Structure ................................................................................................................................311
9.9.4 Remove the electrical box cover ................................................................................................................. 312
9.9.5 Remove the switch cover ............................................................................................................................ 312
9.9.6 Replacing PCB1 for Control ........................................................................................................................ 313
9.9.7 Removing Electrical Box ............................................................................................................................. 315
9.9.8 Removing AS Motor .................................................................................................................................... 317
9.9.9 Removing Drain Pan ................................................................................................................................... 317
9.9.10 Removing Heat Exchanger ....................................................................................................................... 320
9.9.11 Removing Thermistors for Freeze Protection, Gas Pipe, Outlet Air and Inlet Air ...................................... 323
9.9.12 Removing Fan and Fan Motor ................................................................................................................... 327
9.9.13 Removing Electronic Expansion Valve Coil ............................................................................................... 329
9.9.14 Removing Horizontal Louver ..................................................................................................................... 331
9.10 RPF(I)-(1.0-2.5)FSN2E - Floor and Floor concealed type................................................................... 332
9.10.1 Removal of the air inlet grille ..................................................................................................................... 332
9.10.2 Removal of the air filter ............................................................................................................................. 332
9.10.3 Removal of the air outlet grille ................................................................................................................... 332
9.10.4 Removal of the front panel ........................................................................................................................ 333
9.10.5 Removal of the fan motor .......................................................................................................................... 333
9.10.6 Removal of the printed circuit board (PCB) ............................................................................................... 334
9.10.7 Removal of the thermistors from the liquid and gas piping ....................................................................... 334
9.11 KPI-(252-2002)(E/X)4E - Energy recovery and active energy recovery ventilation units .................... 335
9.11.1 System description .................................................................................................................................... 335
9.11.2 Structure and part names .......................................................................................................................... 335
9.11.3 Service cover location ............................................................................................................................... 335
9.11.4 Removal of Heat Exchanger ...................................................................................................................... 336
9.11.5 Removal of the air filter .............................................................................................................................. 336
9.11.6 Removal of the float switch (X4E series only) ........................................................................................... 337
9.11.7 Removal of the damper motor ................................................................................................................... 338
9.11.8 Removal of the electrical box .................................................................................................................... 339
9.11.9 Removal of the PCB .................................................................................................................................. 339
9.11.10 Removal of the fan motor ........................................................................................................................ 340
9.11.11 Removal of the DX-Coil Module (X4E series only) .................................................................................. 341
9.12 DX-Interface ........................................................................................................................................ 342
9.12.1 Structure and part names .......................................................................................................................... 342
9.12.2 Removal of the electrical components ...................................................................................................... 342
247 SMGB0099 rev.0 - 12/2016
9