5 Control system
Printed circuit board for RPI-(8.0-20.0)FSN3(P)E(-f) units
SMGB0099 rev.0 - 12/2016
192
5.7 Printed circuit board for RPI-(8.0-20.0)FSN3(P)E(-f) units
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
PCN1 220 V transformer
PCN2 Indoor fan motor internal thermostat
PCN3 Fan stoppage alarm signal
PCN6 Drain pump motor (RPI)
PCN7 Power supply (1-R, 2-S, 3-N, 4-E)
THM1 Air inlet thermistor
THM2 Air outlet thermistor
THM3 Liquid pipe thermistor
THM4 Remote thermistor (THM-R2 AE)
THM5 Gas pipe thermistor
EFR1 Fuse
EF4 Fuse
CN1 Transformer (pins 1-2: 17.3 V/pins 3-4: 20.8 V)
CN2 Outdoor unit H-LINK control circuit
CN3 Optional input functions (only 2)
CN7 Optional output functions (only 2)
CN8 Optional output functions (number 1, number 2, only 1)
CN11 Expansion valve control
CN14 Float switch (RPI)
CN17 Swing louver motor
Switch indication
DSW3 Capacity code
DSW4 Unit model code
DSW5, RSW2 Refrigerant cycle number
DSW7 Fuse recovery and remote control selector
DWS6, RSW1 Indoor unit number settings
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