Ras-3Hvnpe - Hitachi RAS-2-HVNP Service Manual

5. Control System
5.2.2 RAS-3HVNPE
Connector indication
PCN1 Fuse
PCN5 Crankcase heater of compressor (oil)
PCN8 High pressure switch protection
PCN9 Compressor contactor
PCN10 Low pressure switch protection
PCN14 Solenoid valve
PCN100 4-way solenoid valve
PCN406 Power connection between PCB and DIP-IPM
THM7 Outdoor air temperature thermistor
THM8 Pipe evaporation temperature thermistor
THM9 Compressor discharge temperature thermistor
CN5A Micro electronic expansion valve
CN6 Transmission between PCB and DIP-IPM
CN8 Transmission from outdoor to indoor unit
CN100 Discharge pressure (Pd)
CN404 Line connection between PCB and DIP-IPM
CN406 Motor for fan
EF1,2,3
Power protection
EFR1
121
SMGB0079 rev.0 - 01/2013
Switch indication
DSW1 Test run
DSW2 Auxiliary function setting
DSW3 Capacity code
DSW4/
Refrigerant cycle number
RSW1
DSW5 Switch
DSW6 Switch
LED indication
LED1 Red Power source for the PCB
This LED indicates the transmission status bet-
LED2 Green
ween the indoor unit and the RCS
This LED indicates the transmission status bet-
LED3 Yellow
ween the indoor unit and the outdoor unit
LED4 Red Power source at 280V for the PCB
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