Midea MUEU-18HRFNX-QRD0W, Service Manual

Page: 36 / 82

 Wiring Diagrams 
Indoor unit wiring diagram: 16022500004023
FUNCTION OF SWITCH
SWITCH FOR CCM UNIT ADDRESS
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0~15
S2
+
S1
ADDRESS
ON
1 2
ON
1 2
ON
1 2
ON
1 2
32~47
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
16~31
48~63
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F S2
+
S1
ADDRESS
Factory
Setting
Factory
Setting
SWITCH FOR TEMP.COMPENSATION SW6
ON
2
S T A T E
V A L U E
4 6 E function
F a c t o r y
S e t t i n g
ON
1 2
ON
1 2
ON
1 2
ON
1 2
SWITCH
FOR FAN MOTER
CONTROL THEN NO
POWER REQUEST.
SW2
S T A T E
M O D E F A N O F F F A N O N
F a c t o r y
S e t t i n g
ON ON ON
CN16
CN14
XS9
SWING
MOTOR
XP9
RED
Reactor
RED
CN13
DISPLAY
BOARD
TO WIRE
CONTROLLER
10
T2
T1
CN6
4
ROOM TEMP.
BLACK
WHITE
NEWFAN
CN8
M
CN10A
(CN10)
M
PUMP
2
INDOOR UNIT
MAINBOARD
CN40
TO WIRE
CONTROLLER
5
CN23
ON - OFF
Remote
Control
CN33
ALARM
Alarm
Output
Outer Driver DC Motor
Y/G
DC MOTOR
DRIVER MODLE
CN13
C
N
3
3
CN15
M
Inner Driver
DC Motor
5
M
R
ED
(B
R
O
W
N
)
CN1
B
LU
E(
B
LA
C
K
)
CN5
WATER LEVEL SWITCH
E Y X
To CCM
Comm.Bus
CN7
T2B
OUTER PIPE TEMP.
POWER
P1
CN3
JR6
JR6
FAN1
CAP1
Y/G
P3
P2
6
CN4
2
H
CH
P4
Y/G
4
BROWN BLACK
CN110
YE
LL
O
W
Y/G
TO OUTDOOR UNIT
P5
MAGNETIC
RING
MAGNETIC RING
NOTE:
The wiring diagram
is for explanation
purpose only. The
actual shape of the
components may be
different.
16022500004023
WIRING DIAGRAM
(INDOOR UNIT)
SWITCH
FOR COOLING & HEATING
SW7
ON
S T A T E
M O D E
C O O L I N G &
H E A T I N G C O O L I N G
O N L Y
ON
ON
F a c t o r y
S e t t i n g
OR COOLING ONLY
SETTING
8
24
15
FAN MOTOR STOP-TEM
SW1
ON
1 2
ON
1 2
ON
1 2
ON
1 2
Anti-cold air
According
to the
EEPROM
setting
Factory setting
ON
SWITCH
FOR AUTO-RESTART
SW3
ON
S T A T E
M O D E R E M E M B E R N O _ R E M E M B E R
ON
F a c t o r y
S e t t i n g
SETTING
SWITCH FOR MODE-PRIOR SETTING
ON
S T A T E
M O D E H E A T
F a c t o r y
S e t t i n g
ON
1 2
ON
1 2
ON
1 2
ON
1 2
H E A T C O O L
C O O L
SW5
106~140 161~200
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
20 26 36~53 32~35 54~71 72~90 91~105 141~160