Hitachi RAS-8FSXN - Page 332

11. E l e c t r i c a l c h e c k s o f t h e m a i n p a r t s
Index
11.1
Inverter....................................................................................................................................... 330
11.1.1 Inverter specifications................................................................................................................... 330
11.1.2 Inverter power Unit structure......................................................................................................... 331
11.1.3 Protection function........................................................................................................................ 332
11.1.4 Overload protection control........................................................................................................... 333
11.2 Scroll compressor....................................................................................................................... 334
11.2.1 Reliable mechanism for low vibration and low sound................................................................... 334
11.2.2 Compression principles................................................................................................................. 334
11.2.3 Structure........................................................................................................................................ 334
11.2.4 Compressor type........................................................................................................................... 335
11.3 Thermistors................................................................................................................................ 336
11.3.1 Thermistor positions...................................................................................................................... 336
11.3.2 Thermistor for the temperature of the upper part of the compressor............................................ 337
11.3.3 Thermistor for the outdoor ambient temperature.......................................................................... 338
11.3.4 Thermistor for the evaporating temperature of the outdoor unit in the heating operation (For
defrosting)..................................................................................................................................... 338
11.3.5 Thermistor for super cooling bypass and main line temperature of outdoor unit.......................... 338
11.4 Electronic expansion valve......................................................................................................... 339
11.5 Pressure sensor......................................................................................................................... 340
11.5.1 High pressure control.................................................................................................................... 340
11.5.2 Low pressure control..................................................................................................................... 340
11.6 High pressure protection device................................................................................................. 341
11.7 Noise filter (NF1, NF2)............................................................................................................... 342
11.8 Capacitors (CB1 and CB2 / CB3)............................................................................................... 344
11.9 Reactor (DCL1 and DCL2)......................................................................................................... 345
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Electrical checks of the
main parts
329
SMGB0065 rev. 1 - 12/2010
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