21
Technical Information
Service Manual
GWH18MC-K3DNE3G/O(CB404W03400) GWH24MD-K3DNE3G/O (CB404W03800)
GWH18MC-K3DNE3G/O(CB404W03401) GWH24MD-K3DNE3G/O(CB404W03801)
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
● Outdoor Unit
AP1
TEMP.SENSO
R
EXHAUST TEMP.SENSO
R
OUTROOM
OUTTUBE TEMP.SENSO
R
BK
WH
BU YE
X1
COMP
SAT
WH WH
OVC_COMP
RD
RT3
RT2
RT1
PE
PE
RD
BU YE
U(BU)V(YE)W(RD)
YEGN
T_SENSOR
OVERLOAD PROTECTOR
L3
MAGNETIC
RING
L3
L3
AC_L
N1
COM_INNER
PE
YEGN
PE
N
L
YEGN
BU
PE
N
L
N(1)
2
3
BN
BK
BU
XT1
INDOOR UNI
T
L1
RING
BK
BN
BU
BN
BU
YEGN
BLOCK
TERMINAL
PE
MAGNETIC
PE
M1
4-WAY
4YV
VALVE
VT
VT
OFAN
4WAY
FAN MOTOR
YEGN
PE
L1
PRINTED CIRCUIT BOARD
U
V
W
L1
COMP.
θ
θ
θ
POWER
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 electric shock !
WARNING
BN
20K 15K 50K
L2
L2
50K
15K
20K
BN
WARNING
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 electric shock !
POWER
θ
θ
θ
COMP.
L1
W
V
U
PRINTED CIRCUIT BOARD
L1
PE
YEGN
FAN MOTOR
4WAY
OFAN
VT
VT
VALVE
4YV
4-WAY
M1 PE
MAGNETIC
PE
TERMINAL
BLOCK
YEGN
BU
BN
BU
BN
BK
RING
L1
INDOOR UNI
T
XT1
BU
BK
BN
3
2
N(1)
L
N
PE
BU
YEGN
L N
PE
YEGN
PE
COM_INNER
N1
AC_L
L3 L3
RING
MAGNETIC
L3
OVERLOAD PROTECTOR
T_SENSOR
YEGN
W(RD)
V(YE)
U(BU)
YE
BU
RD
PE
PE
RT1 RT2 RT3
RD
OVC_COMP
WH
WH
SAT
COMP
X1
YE
BU
WH
BK
TEMP.SENSO
R
OUTTUBE
OUTROOM
TEMP.SENSO
R
EXHAUST
TEMP.SENSO
R
AP1
HEAT_B
EH
RD
BOTTOM
HEATER
BAND
RD
