Hitachi RAS-8FSXN - Page 295

10. S e r v i c i n g
Index
10.1
Removing the front service cover............................................................................................... 292
10.2 Removing the upper cover......................................................................................................... 293
10.3 Removing the electrical box cover............................................................................................. 294
10.3.1 Removing the electrical box cover for RAS-(8-12)FSXN ............................................................. 294
10.3.2 Removing the electrical box cover for RAS-(14-18)FSXN ........................................................... 294
10.4 Removing the electrical box....................................................................................................... 295
10.4.1 Removing the electrical box for RAS-(8-12)FSXN........................................................................ 295
10.4.2 Removing the electrical box for RAS-(14-18)FSXN...................................................................... 295
10.5 Removing the electrical box stay................................................................................................ 296
10.5.1 Removing the electrical box stay for RAS-(8-12)FSXN................................................................ 296
10.5.2 Removing the electrical box stay for RAS-(14-18)FSXN.............................................................. 296
10.6 Removing the air grille................................................................................................................ 297
10.7 Removing the outdoor fan.......................................................................................................... 298
10.8 Removing the compressor......................................................................................................... 300
10.9 Replacing the refrigerant oil....................................................................................................... 308
10.9.1 No clogging in return oil circuit...................................................................................................... 308
10.9.2 Clogging in return oil circuit........................................................................................................... 309
10.10 Replacing the return oil circuit.................................................................................................... 311
10.11 Removing the coils..................................................................................................................... 312
10.11.1 Removing the expansion valve coil (MV1, MVB).......................................................................... 313
10.11.2 Removing the solenoid valve coil (SVA, SVG).............................................................................. 314
10.11.3 Removing the solenoid valve........................................................................................................ 314
10.11.4 Removing the reversing valve coil (RVR1, RVR2)........................................................................ 315
10.11.5 Removing the reversing valve....................................................................................................... 315
10.12 Removing the stop valve............................................................................................................ 317
10.13 Removing the high pressure switch, high pressure sensor and low pressure sensor................ 318
10.13.1 Removing the high pressure switch (PSH1, PSH2)...................................................................... 319
10.13.2 Removing the high pressure sensor (Pd) and low pressure sensor (Ps)...................................... 319
10.14 Removing the liquid pipe thermistor........................................................................................... 320
10.15 Removing the ambient temperature thermistor.......................................................................... 322
10.16 Removing other electrical components...................................................................................... 323
10.16.1 Removing the PCB1 and electrical components for the electrical box.......................................... 323
10.16.2 Removing the PCB2 for the inverter............................................................................................. 325
10.16.3 Removing the diode module and transistor module...................................................................... 325
10.16.4 Removing the fan controller.......................................................................................................... 327
10.16.5 Fitting the electrical box................................................................................................................ 327
10 Servicing
291
SMGB0065 rev. 1 - 12/2010
10