Ras-3Hvnp1E - Hitachi RAS-(3-6)HVNC1(E) Service Manual

5 Control System
5.2.2 RAS-3HVNP1E
Connector indication
PCN1 Power supply connector
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
CN1 Input function
CN2 Demand input
CN5A Micro electronic expansion valve
CN6 Transmission between PCB and DIP-IPM
CN7 External output
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
139
SMGB0087 rev.0 - 12/2013
Switch indication
DSW1 Test run
DSW2 Auxiliary function setting
DSW3 Capacity code
DSW4/
Refrigerant cycle number
RSW1
DSW5 End terminal resistance
DSW6 Simultaneous / individual operation
LED indication
LED1 Red Power source for the PCB
This LED indicates the transmission status
LED2 Green
between the indoor unit and the RCS
This LED indicates the transmission status
LED3 Yellow
between the indoor unit and the outdoor unit
LED4 Red Power source at 280V for the PCB
5