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5 Control system
Printed circuit board for RPC-FSN3
SMGB0099 rev.0 - 12/2016
190
5.5 Printed circuit board for RPC-FSN3
The indoor unit PCB operates with four types of DIP switches, a slide switch and a rotary switch. The position is as
follows:
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
Connector indication
THM1
Air inlet thermistor
THM2
Air outlet thermistor
THM3
Freeze protection thermistor
THM5
Gas pipe thermistor
PCN7
Terminal board
CN1
Motor for indoor fan
CN2
Terminal board 2
CN3
Optional input functions
CN7
Optional output functions
CN8
Optional output functions
CN10
Motion Sensor Kit connection
CN11
Expansion valve control
CN14
Float switch
CN17
Swing louver motor
CN36
Power source for drain pump
EFS1
PCB2 fuse
EFR1
PCB2 fuse
EF1
PCB1 fuse
EF4
PCB1 fuse
Switch indication
SW1
Comunicaton type
DSW3
Capacity code
DSW4
Unit model code
DSW5, RSW2
Refrigerant cycle number
DWS6, RSW1
Indoor unit number settings
DSW7
Fuse re-establishing