Hitachi RCIM-1.0FSRE - Printed Circuit Board for Complementary Systems; Printed Circuit Board For Kpi (Pi073)

4 Control system
Printed circuit board for complementary systems
SMGB0137 rev.0 - 05/2021
88
4.10 Printed circuit board for complementary systems
4.10.1 Printed circuit board for KPI (PI073)
FUSE
PCB1
PCB2
PCB1 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 Green
PCB power supply
PCB2 LED indicator
LED1 Yellow H-LINK transmission external
LED2 Green PCB power supply
LED3 Yellow
H-LINK transmission internal (between
PCBs)
PCB1 Connector indication
PCN1 230V transformer
PCN2 Bridge
PCN3 Auxiliary heater
PCN7 Terminal board 1 (TB1)
PCN10 Motor for Damper
THM1 Air inlet thermistor
THM2 Outlet air thermistor
THM3 Liquid pipe thermistor (KPI-X3E only)
THM4
Optional connector (for remote temperature sensor
to control an auxiliary heater)
THM5 Gas pipe thermistor (KPI-X3E only)
CN1 Transformer 12V
CN2 TB1 and PCB2
CN11 Expansion valve (KPI-X3E only)
CN14 Flow switch (KPI-X3E only)
EFR1 Power supply fuse
EF2 PCB fuse
EF3 Fuse for PCN5 connector
PCB2 Connector indication
PCN1 TB1 and PCB1
THM1 Coil inlet thermistor (KPI-X3E only)
THM2 Coil outlet thermistor (KPI-X3E only)
CN1 TB2 and PCB1
CN2 CO
2
sensor 4-20 mA
CN3 CO
2
sensor 0-10 V
CN4 CO
2
sensor ON/OFF
CN5 Motor for fan 1
CN6 Motor for fan 2
EF1 PCB2 fuse
Switch indication
DSW3 Capacity code
DSW4 Unit model code
DSW5,
RSW2
Refrigerant cycle number setting
DSW6,
RSW1
Indoor unit number setting
DSW7 Fuse recovery