Printed Circuit Board (Pcb); Outdoor Unit - Hitachi YUTAKI S80 Series Technical Catalogue

10. Electrical wiring

10.3 Printed circuit board (PCB)

10.3.1 Outdoor unit

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RAS-(4-6)H(V)RNME-AF
Connector indication
PCN1 Fuse
PCN2 PCB1 connection from outdoor to indoor unit
PCN5 Crankcase heater of compressor (oil)
PCN6 Output optional function
PCN7 Output optional function
PCN8 Pressure switch protection
PCN9 Compressor contactor
PCN13 Pressure switch control
THM7 Outdoor air temperature thermistor
THM8 Pipe evaporation temperature thermistor
THM9 Compressor discharge temperature thermistor
CN2 Current transformer
CN5A Micro electronic expansion valve
CN8 Transmission from outdoor to indoor unit
CN14 Transmission between PCB1 and ISPM
EFS1, 2 Power protection
118
TCGB0075 rev.0 - 11/2012
Switch indication
DSW1
Test run
(PCB1)
DSW2 Piping length and selection function
DSW3 Capacity code
DSW4/
Refrigerant cycle number
RSW1
DSW5 End terminal resistor
DSW6 Power source setting
LED indication
This LED indicates the transmission status bet-
LED1 Red
ween the indoor unit and the RCS
This LED indicates the transmission status bet-
LED2 Yellow
ween the indoor unit and the outdoor unit
LED3 Green Power source for the PCB