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Indoor Board Diagram
R:Red
W:White
Y:Yellow
Y/G:Yellow/Green
B:Black
BR:Brown
BL:Blue
PIPING TEMP.SENSOR(10K)
AMBIENT TEMP.SENSOR(10K)
POWER BOTTON
INDOOR UNIT DIAGRAM
Notes:
1.The dotted parts are optional.
2.The two pins of CN51 should be shorted,
when the J6 is cuted off.
M
CN7
TO OUTDOOR UNIT
1
(N)
(C)
3
(L)
2
W
B
Y/G
GND
CN6
R
(L)
CN21
N
COMM
CN51
CN9
CN17
CN23'
CN35
CN34
ROOM CARD
CN5
DC FAN MOTOR
CN11'
DISPLAY BOARD
Model selection:
09K model-23 code - BM1 - 1 off 2 off
12K model-26 code - BM1 - 1 off 2 on
18K model-33 code - BM1 - 1 on 2 off
WIRED CONTROLLER
UP-DOWN
STEPMOTOR
LEFT & RIGHT STEMPMOTOR
WIFI
CN14
Notes:Before replacing the board,it
is necessary to ensure that the
machine is matched with the board
code
CN56
HUMAN SENSOR
CN38
CN27'
Y/G
GND
0011509128
WK-B
EVAPORATOR
ELECTRIC
CONTROL BOX
COVER
GND
Y/G
RJ45
Diagnostic
port
CN5
CN1
CN2
SW1
OFF
OFF
OFF
OFF
CN3
CN4
Unit
No.
SW1 DIP Switch
position
1 2 3 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
off off off off
off off off on
off off on off
off off on on
off on off on
off on on off
off on on on
on off off off
on off off on
on off on off
on off on on
on on off off
on on off on
on on on off
on on on on
0
off on off off
REFERENCE INFORMATION
PAGE 106
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