12 Technical data
Installation manual
22
2(A)MXM40+50 + 2(A)MXF40+50
R32 Split series
3P600450-3G – 2021.03
12.1
Wiring diagram
12.1.1
Unified wiring diagram legend
For applied parts and numbering, refer to the wiring diagram on the
unit. Part numbering is by Arabic numbers in ascending order for
each part and is represented in the overview below by "*" in the part
code.
Symbol
Meaning
Symbol Meaning
Circuit breaker
Protective earth
Connection
Protective earth (screw)
,
Connector
A
Rectifier
Earth
Relay connector
Field wiring
Short-circuit connector
Fuse
Terminal
INDOOR
Indoor unit
Terminal strip
OUTDOOR
Outdoor unit
Wire clamp
Residual current
device
Symbol
Colour
Symbol
Colour
BLK
Black
ORG
Orange
BLU
Blue
PNK
Pink
BRN
Brown
PRP, PPL
Purple
GRN
Green
RED
Red
GRY
Grey
WHT
White
YLW
Yellow
Symbol
Meaning
A*P
Printed circuit board
BS*
Pushbutton ON/OFF, operation
switch
BZ, H*O
Buzzer
C*
Capacitor
AC*, CN*, E*, HA*, HE*, HL*,
HN*, HR*, MR*_A, MR*_B, S*, U,
V, W, X*A, K*R_*, NE
Connection, connector
D*, V*D
Diode
DB*
Diode bridge
DS*
DIP switch
E*H
Heater
FU*, F*U, (for characteristics,
refer to PCB inside your unit)
Fuse
FG*
Connector (frame ground)
H*
Harness
H*P, LED*, V*L
Pilot lamp, light emitting diode
HAP
Light emitting diode (service
monitor green)
HIGH VOLTAGE
High voltage
IES
Intelligent eye sensor
IPM*
Intelligent power module
K*R, KCR, KFR, KHuR, K*M
Magnetic relay
L
Live
Symbol
Meaning
L*
Coil
L*R
Reactor
M*
Stepper motor
M*C
Compressor motor
M*F
Fan motor
M*P
Drain pump motor
M*S
Swing motor
MR*, MRCW*, MRM*, MRN*
Magnetic relay
N
Neutral
n=*, N=*
Number of passes through ferrite
core
PAM
Pulse-amplitude modulation
PCB*
Printed circuit board
PM*
Power module
PS
Switching power supply
PTC*
PTC thermistor
Q*
Insulated gate bipolar transistor
(IGBT)
Q*C
Circuit breaker
Q*DI, KLM
Earth leak circuit breaker
Q*L
Overload protector
Q*M
Thermo switch
Q*R
Residual current device
R*
Resistor
R*T
Thermistor
RC
Receiver
S*C
Limit switch
S*L
Float switch
S*NG
Refrigerant leak detector
S*NPH
Pressure sensor (high)
S*NPL
Pressure sensor (low)
S*PH, HPS*
Pressure switch (high)
S*PL
Pressure switch (low)
S*T
Thermostat
S*RH
Humidity sensor
S*W, SW*
Operation switch
SA*, F1S
Surge arrester
SR*, WLU
Signal receiver
SS*
Selector switch
SHEET METAL
Terminal strip fixed plate
T*R
Transformer
TC, TRC
Transmitter
V*, R*V
Varistor
V*R
Diode bridge, Insulated-gate
bipolar transistor (IGBT) power
module
WRC
Wireless remote controller
X*
Terminal
X*M
Terminal strip (block)
Y*E
Electronic expansion valve coil
Y*R, Y*S
Reversing solenoid valve coil
Z*C
Ferrite core
ZF, Z*F
Noise filter
