Schematic Diagram
11
L6
COM-INNER
4BU
1BN
3BU
L2
L2
BU
BN
BU
8YEGN
PE
7BU
N1
AC-L2
N2
E(PE)
AP2
N1
AC-L1
L1
6BN
L5
YEGN
Main Board
AP1:
U
V
W
RD
BU
YE
9BU
11RD
10YE
L4
L4
12YEGN
PE
C(W
ˈ7
X1
S(V)R(U)
4V
T-SENSOR
YEGN
BN
POWER
5YEGN
YEGN
XT1
BU
BU
BK
BN
BU
BK
BN
XTA
XTB
L
N
YE
COMP.
TERMINAL
BLOCK
CAP.
REACTOR
L4
OVC-COMP
SAT
13WH
14WH
BLOCK
TERMINAL
TERMINAL
BLOCK
Please don't touch any terminal when the voltage of terminal
P(DC+) and N(DC-) at AP1 is higher than 30V to prevent the risk
of electrical shock!
WARNING
L7
L3
L7
N1
AC-L
N2
4-WAY VALVE
GAS VALVE
LIQUID VALVE
BK
WH
VT
VT
QA
YA
QB
YB
CONNECTOR
OVERLOAD
PROTECTOR
M
FAN MOTOR
EKV
FB
5
5
BK
FB
YEGN
PE
WH RD
BU
BN BK
C1
OFAN1
PE
PE
PE
EH
COMPRESSOR
BAND HEATER
16RD
15RD
3
1
HEAT-C
2BN
LX1-2
OG
LX1-1
WH
L
FA
EKV
WH
5
5
FA
RD
BK
BK
TUBE-B
0
RT7
RT6
0
TEM.SENSOR TEM.SENSOR
RD
BK
WH
TUBE-A
0
TEM.SENSOR
LIQUID VALVE
TEM.SENSOR
GAS VALVE
RT4
RT5
0
BK
GY
INDOOR UNIT
B
INDOOR UNIT
A
N(1)
2
3
N
3
2
L
N(1)
0
0
0
RT1
RT2
RT3
OUTTUBE
TEM.SENSOR
OUTROOM
TEM.SENSOR
EXHAUST
TEM.SENSOR
4YV
COMP
5. Schematic Diagram
5.1 Electrical Data
Meaning of marks
5.2 Electrical Wiring
(1)Models:GWHD(14)NK3BO,GWHD(18)NK3DO
Symbol
Color symbol
Symbol
Color symbol
Symbol
Parts name
WH
WHITE
GN
GREEN
SAT
OVERLOAD
YE
YELLOW
BN
BROWN
COMP
COMPRESSOR
RD
RED
BU
BLUE
PROTECTIVE EARTH
YEGN
YELLOW GREEN
BK
BLACK
/
/
VT
VIOLET
OG
ORANGE
/
/
