Hitachi RCI-4.0FSR - Printed Circuit Board for RPI-(8.0-20.0)FSN3(P)E(-F) Units (PI065-PI005)

4 Control system
Printed circuit board for RPI-(8.0-20.0)FSN3(P)E(-f) units (PI065-PI005)
SMGB0137 rev.0 - 05/2021
84
4.7 Printed circuit board for RPI-(8.0-20.0)FSN3(P)E(-f) units (PI065-PI005)
CN403
CN404
CN401
CN402
YX2YX5 YX4YX3
X2 X5 X4 X3
R
LED indicator
LED1 Red
This LED indicates the transmission
status between the indoor unit and
the remote control.
LED3 Yellow
This LED indicates the transmission
status between the indoor unit and
the outdoor unit.
LED4 Red PCB power supply
PCB1 Connector indication
PCN1 220 V transformer
PCN2 Internal thermostat for indoor fan motor
PCN3 Fan stoppage alarm signal
PCN6 Drain pump motor (RPI)
PCN7 Terminal board - Power supply
THM1 Air inlet thermistor
THM2 Air outlet thermistor
THM3 Liquid pipe thermistor
THM4
Optional connector (for remote temperature
sensor)
THM5 Gas pipe thermistor
EFR1 Power supply fuse
EF1 Fuse for PCN5 connector
EF4 PCB fuse
CN1 Transformer (20 V)
CN2
Terminal board - H-LINK control circuit and
remote control switch
CN3 Optional input functions
CN7 Optional output functions
CN8 Optional output functions
CN11 Printed circuit board 2 (CN401)
CN17 Printed circuit board 2 (CN404)
CN14 Float switch (RPI)
PCB2 Connector indication
CN401 Printed circuit board 1 (CN11)
CN404 Printed circuit board 1 (CN17)
CN402 Expansion valve control
CN403 Expansion valve control
YX2 Relay for High speed (Terminal X2)
YX5 Relay for S-Low speed (Terminal X5)
YX4 Relay for Low speed (Terminal X4)
YX3 Relay for Medium speed (Terminal X5)
R Terminal board - Fan motor power supply
Switch indication
DSW3 Capacity code
DSW4 Unit model code
DSW5,
RSW2
Refrigerant cycle number setting
DSW6,
RSW1
Indoor unit number setting
DSW7 Fuse recovery and remote control selector