Hitachi RCI-1.0FSN4 Service Manual page 13

General Index
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
10. Troubleshooting ..................................................................................................... 343
10.1 Electronic expansion valve check procedure ...................................................................................... 344
10.2 Procedure for checking fan motors in indoor units .............................................................................. 344
10.3 Inspection of other components .......................................................................................................... 346
10.4 Outdoor and indoor alarm codes ......................................................................................................... 347
10.5 DX-Interface EXV-(2.0-10.0)E2 or KPI-(E/X)4E alarm codes.............................................................. 349
11. Maintenance notes ................................................................................................. 351
11.1 Regular equipment maintenance ........................................................................................................ 352
11.1.1 Necessary tools, equipment and consumable for regular maintenance .................................................... 352
11.2 Indoor cleaning .................................................................................................................................... 353
11.2.1 Cleaning the built-in 4-way indoor unit RCI(M) .......................................................................................... 353
11.2.2 Cleaning the built-in 2-way indoor unit (RCD) ........................................................................................... 356
11.2.3 Cleaning of the wall-type indoor unit (RPK) ............................................................................................... 358
11.2.4 Cleaning the floor console and floor concealed console indoor unit RPF(I) .............................................. 359
11.2.5 Cleaning of the ceiling-type indoor unit (RPC) .......................................................................................... 360
11.3 Cleaning of KPI units ........................................................................................................................... 363
11.4 Econofresh kit...................................................................................................................................... 365
11.5 Collection of refrigerant to replace the indoor unit............................................................................... 365
11.6 Cleaning agents for heat exchanger ................................................................................................... 366
11.6.1 Recommended specifications of cleaning agents for aluminium fins ........................................................ 366
11.6.2 Particularities and benefits ........................................................................................................................ 366
11.6.3 To consider ................................................................................................................................................ 366
XI SMGB0099 rev.0 - 12/2016