Ras-(4-6)H(V)Npe - Hitachi RAS-2-HVNP Service Manual

5. Control System
5.2.3 RAS-(4-6)H(V)NPE
Connector indication
PCN1 Fuse
PCN5 Crankcase heater of compressor (oil)
PCN7 Solenoid valve
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
CN405 Motor for fan 2
CN406 Motor for fan 1
EF1,2,3
Power protection
EFR1
122
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