Installation manual
11
REQ71+10 REQ71~125B7W1B
Split System air conditioners
4PW19495-1B
W
IRING
DIAGRAM
A1P ........................... Printed circuit board
BS1 ........................... Push button (forced defrost - pump down)
C1,C2 ........................ Capacitor (M1F-M2F)
C3.......................*..... Capacitor (M1C)
CT ............................. Current transformer (T1A)
DS1 ........................... Selector switch
E1HC......................... Crankcase heater
F1U,F2U.................... Fuse (T6.3/250 V)
HAP........................... Light emitting diode (green)
K1M........................... Magnetic contactor (M1C)
K1R ........................... Magnetic relay (K1M)
K2R ........................... Magnetic relay (Y2S)
K3R ........................... Magnetic relay (E1HC)
K4R ........................... Magnetic relay (Y1S)
K5R,K6R,K7R ........... Magnetic relay (M1F)
K8R,K9R,K10R ..** ... Magnetic relay (M2F)
M1C........................... Motor (compressor)
M1F,M2F ................... Motor (fan)
PC ............................. Power circuit
Q1DI.......................... Earth leakage breaker (field supply)(
≤
30 mA)
Q1M,Q2M .................. Thermo switch (M1F-M2F)
Q1RP................. ##... Phase reverse circuit
R1T............................ Thermistor (air)
R2T............................ Thermistor (coil)
R3T............................ Thermistor (discharge)
RC ............................. Signal receiver circuit
S1PH ......................... Pressure switch (HIGH)
S1PL.......................... Pressure switch (LOW)
SD.............................. Safety devices input
T1A ............................ Transformer
TC.............................. Signal transmission circuit
X1M,X2M................... Terminal strip
Y1E............................ Expansion valve (electrical type)
Y1S............................ 4-way valve
Y2S............................ Solenoid valve
: Field wiring
BLK
: Black
L
: Live
BLU
: Blue
N
: Neutral
ORG
: Orange
: Terminal
RED
: Red
: Connector
WHT
: White
: Protective earth (screw)
YLW
: Yellow
: Short circuit connector
,
*
: V3 model only
**
: class 125 only
##
: W1 model only
NOTE 1: Do not operate the unit by short-circuiting S1PL. This would cause compressor failure.
NOTE 2: Confirm the method of setting selector switches in the service manual. Factory setting of all switches are set to be OFF.
SWITCH BOX (OUTDOOR)
:
POSITION OF COMPRESSOR TERMINAL
:
WIRE ENTRANCE
:
