Printed Circuit Board For Rpk-Fsr(H)M Units; For Rpk-(0.4-1.5)Fsr(H)M (Pi151-Pi154) - Hitachi RCI-1.0FSR Service Manual

4 Control system

Printed circuit board for RPK-FSR(H)M units

4.8 Printed circuit board for RPK-FSR(H)M units

4.8.1 For RPK-(0.4-1.5)FSR(H)M (PI151-PI154)

PCB1
LED indicator
This LED indicates the transmission
LED1 Red status between the indoor unit and the
remote control.
This LED indicates the transmission
LED3 Yellow status between the indoor unit and the
outdoor unit.
LED4 Red PCB power supply
LED2 Red Not used
PCB1 Connector indication
PCN500 Terminal board 1 (TB1)
PCN550 Motor for indoor fan
THM1 Air inlet thermistor
THM2 Air outlet thermistor
THM3 Freeze protection thermistor
THM4 Optional connector (for remote temperature sensor)
THM5 Gas pipe thermistor
CN2 Terminal board 2 (TB2)
CN3 Optional input functions
CN7 Optional output functions
CN8 Optional output functions
CN5A Printed circuit board 3 (CN10H)
CN11 Expansion valve
CN17A Motor for automatic swing louver
CN18 Printed circuit board 2 (CN18)
CN19A Printed circuit board 2 (CN19)
CN19B Printed circuit board 2 (CN19)
85 SMGB0137 rev.0 - 05/2021
PCB2
PCB3
PCB2 Connector indication
CN18 Printed circuit board 1 (CN18)
CN19 Printed circuit board 1 (CN19A - CN19B)
PCB3 Connector indication
CN10H Printed circuit board 1 (CN5A)
Switch indication
DSW3 Capacity code
DSW4 Unit model code
DSW5,
Refrigerant cycle number setting
RSW1
DSW6,
Indoor unit number setting
RSW2
DSW7 Fuse recovery
DSW2,
Identifying indoor units installed side by side
DSW9
SW2 Switch for changing wired / wireless controller
4