Outdoor Units Printed Circuit Board (Pcb); Ras-3Hvrc2 - Hitachi UTOPIA RAS-4HVRP2E Service Manual

5 Control System

Outdoor units Printed circuit board (PCB)

5.2 Outdoor units Printed circuit board (PCB)

5.2.1 RAS-3HVRC2

Switch indication
DSW1 No setting required
DSW2 Function selection
DSW3 Capacity
DSW4 Ref. cycle number
DSW5 End terminal resistance
DSW6 Optional function
DSW7 Optional function
DSW1 Optional function
DSW301 Test run mode
DSW302 Pipe lenght
RSW1 Ref. cycle number
Manual defrost operation switch. The defrost option
PSW1
is manually available under the forced defrost area
PSW2
Available optional function. Setting can be selected
using the 7-segment display
PSW3
84 SMGB0136 rev.0 - 07/2021
PCB1 LED indication
LED1 Red Power source for the PCB
This LED indicates the inverter
LED2 Green
transmission status
This LED indicates the transmission
LED3 Yellow status between the indoor unit and the
outdoor unit
LED4 Red For checking 280V power source.
LD1 Red For inspection
LD2 Red For inspection
LD3 Red For inspection
LD4 Red For inspection
LED351 Red For inspection
LED353 Red For inspection