3 Electrical and control settings
Wiring diagrams
SMGB0137 rev.0 - 05/2021
70
3.3.8  RPI-(16.0/20.0)FSN3PE(-f)
Mark Name
AR1,2,12,22 Auxiliaryrelay
CA, CA2 Capacitor for Indoor fan
CNn Connector on PCB
DSW3-7 DIP switch for setting
RSW1,2 Rotary switch for setting
EFR1 Power supply fuse
EF1 Fuse for PCN5 connector
EF2 Fuseforfans(locatedintheterminalbox)
EF4 PCB fuse
MIF, MIF2 Motor for Indoor fan
MV, MV2 Micro-computercontrolexpansionvalve
MD, MD2 Motor for drain discharge mechanism
FS, FS2 Float switch
MT, MT2 Magneticandthermalcircuitbreaker
TB1,TB2 Terminal board
Mark Name
THM1-5 Thermistor
TF, TF2 Transformer
ITI Internal thermostat for indoor fan motor
CN20-31 Aerial connector indoor unit 1
CN202-312 Aerial connector indoor unit 2
RCS Remote control switch
TB, TB2 Terminal board
TF, TF2 Transformer
X2 High speed terminal
X3 Medium speed terminal
X4 Low speed terminal
X5 S-Low speed terminal
PCB1,12 Printed circuit board indoor unit 1
PCB2,22 Printed circuit board indoor unit 2
Main switch, 
CB (fuse), 
ELB
Main switch, 
CB (fuse), 
ELB
240 V
240 V
LSP 
Connector
LSP Connector
Option
Option
HSP Connector
HSP Connector
(Factory supplied)
(Factory supplied)
240V
220V
Air 
inlet
Air 
inlet
Air 
outlet
Air 
outlet
Liquid 
pipe
Liquid 
pipe
Gas 
pipe
Gas 
pipe
Liquid and gas THM come 
from evaporator unit
Liquid and gas 
THM come from 
evaporator unit
1~ 230V 50Hz
1~ 230V 50Hz