Ras-(8-10)Hn(P/C)E - Hitachi RAS-(3-6)HVNC1(E) Service Manual

5 Control System
5.2.5 RAS-(8-10)HN(P/C)E
PCB1 Connector indication
Connector
R1,N1,R2,
Power supply and reverse phase detection
S2,T2
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 (only RAS-(8-10)HNPE)
PCN100 4-way solenoid valve
PCN406 Power connection between PCB1 and PCB3
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 PCB1 and DIP-IPM
CN7 External output
CN8 Transmission from outdoor to indoor unit
CN100 Discharge pressure (Pd)
CN102 Line connection between PCB1 and PCB3
CN404 Line connection between PCB1 and PCB3
CN405 Motor for fan 2
CN406 Motor for fan 1
EF1,2,3
Power protection
EFR1
142
SMGB0087 rev.0 - 12/2013
PCB1
Name
EF1
L2
C8
C7
JP1
PCB1 Switch indication
Connector
DSW1 Test run
DSW2 Auxiliary function setting
DSW3 Capacity code
DSW4/
Refrigerant cycle number
RSW1
DSW5 End terminal resistance
DSW6 Simultaneous / individual operation
PCB1 LED indication
LED Colour
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
PCB3 Connector indication
Connector
PCN201 Power supply
PCN202 Power connection between PCB3 and PCB1
CN201 Line connection between PCB3 and PCB1
CN202 Line connection between PCB3 and PCB1
EFR1 Power protection
PCB3
TAB4
TAB3
Name
Name
Name