Circuit diagram – Friedrich MW18Y3F User Manual
Page 5
CIRCUIT DIAGRAM
INDOOR UNIT
OUTDOOR UNIT
Model :
MW18Y3F / MR18Y3F
2006.02.20
4
RED
WHITE
BLACK
RED
WHITE
BLACK
RED
BLACK
WHITE
YELLOW
BLUE
RED
BROWN
BLUE
ORANGE
YELLOW
WHITE
BLACK
BLACK
WHITE
RED
Y
E
LL
O
W
Y
E
LL
O
W
BLACK
BLACK
BROWN
BROWN
BLACK
BLACK
WHITE
WHITE
RED
BLACK
B
LA
C
K
B
LA
C
K
B
LA
C
K
G
R
E
E
N
CN71
W10
W11
W7
W9
W8
CN801
W4
W2
W1
W3
CN40
CN30
CN70
1
5
4
3
2
6
1
5
4
3
2
6
1
5
4
3
2
6
1
5
4
3
2
1
3
2
1
3
2
6
1
4
3
2
1
4
3
2
1
3
2
1
3
2
1
3
2
1
3
2
2
2 1
1
5
(N)
4
(L)
3
2
1
FUSE
5A-250V
TO INDOOR UNIT POWER SUPPLY
G
TERMINAL
FUSE 20A-250V
PIPE TEMP. THERMISTOR
DISCHARGE PIPE TEMP. THERMISTOR
OUTDOOR TEMP. THERMISTOR
REACTOR
FAN MOTOR
COMPRESSOR
EXPANSION VALVE
4-WAY VALVE
4WV
E V
F M
C M
S(S)
C(T)
R(R)
CONTROLLER PCB ASSY
ORANGE
RED
YELLOW
PINK
BLUE
BLACK
BLACK
BLACK
BLACK
YELLOW
BLUE
WHITE
BLACK
RED
RED
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
GRAY
GRAY
W
H
IT
E
B
LA
C
K
R
E
D
G
R
E
E
N
/
Y
E
LL
O
W
G
3
2
1
1
6
5
4
3
2
1
6
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
7
7 7
1
2
1
2
1
3
2
1
3
2
C
N
1
C
N
7
C
N
5
C
N
6
C
N
2
C
N
3
C
N
10
CN201
W
1
W
3
W
2
THERMAL FUSE
102
TERMINAL
TO OUTDOOR UNIT
VARISTOR
FUSE
3.15A
FAN MOTOR
STEP MOTOR
PIPE TEMPERATURE
THERMISTOR
ROOM TEMPERATURE
THERMISTOR
SW
POWER CIRCUIT
FM
M
C
O
N
T
R
O
LL
E
R
P
C
B
A
S
S
Y
IN
D
IC
AT
O
R
P
C
B
A
S
S
Y