Haier 2U18MS2VHB Service Manual page 90

Ductless multi-split heat pump, outdoor/indoor, wall mount - highwall, 2'x2' compact cassette, 3'x3' large cassette, slim duct, mid-static ducted, medium static ducted, console
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YCJ-A002
REMOTE
CENTRAL
CONTROL
ADAPTOR
WiFi MODULE
ROOM CARD
FLOAT SWITCH
WIRED
CONTROLLER
Factory default setting
of the DIP switches
NOTE:
1.Dashed parts are optional.
2.Please refer to service manual to get details of the DIP switches definition .
3.Do not change the DIP switches setting without technical support.
4.Get details from trouble shooting list about LED indication.
5.Abbreviation : RD -red, W -withe, BLK -black,BLU-blue,GRN-green,YL-yellow,Y/G -yellow/green,E.A.O:
external alarm output,Tr : indoor unit ambient(room) temperature sensor,Tp : indoor unit pipe(coil)
temperature sensor.
6.The port CN4&CN10are dry contact output port for particular use,do not connect other device without
technical person support.
G-12
Wiring Diagram
INFRARED SIGNAL RECEIVER
12V
COM
GND
BLU
W
CN21
LED4
LED3
ON
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
SW01
SW03
BLK
BLK
W
Tp Tr
LED2
LED1
A B C
A B C
W
CN22
W
WIRED
CONTROLLER
SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 SW3-1 SW3-2 SW3-3 SW3-4 SW3-5 SW3-6 SW3-7 SW3-8
MODEL
USYM
09UCDSA1
OFF
OFF
ON
OFF
USYM
12UCDSA1
USYM
18UCDSA1
OFF
ON
ON
ON
USYM
24UCDSA1
MID-STATIC DUCTED TECHNICAL OVERVIEW
Topic Title
DC FAN
M
MOTOR
W
W
CN6
ON
BLU
BLK
CN9
CN16
CN19
CN20
CN10
FUSE
T250V 5A
1(L1)
2(L2) 3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
RELAY FOR AUXILIARY
(dry contact port,contact
rating 230VAC,3A
P1
P2
GRN
TO RJ 45 device
CN4
YL
M
AC PUMP
YL
MOTOR
FRELAY FOR FRESH AIR
MOTOR(dry Contact
,rating-230VAC,3A) /E.A.0
G
Y/G
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
0151539442
Indoor un
Wire
Flash times of the
con
indoor unit PCBA
erro
LED3
LED4
0
1
0
0
2
0
0
4
0
0
7
0
0
8
/
0
12
0C
0
13
0D
0
14
0E
HEX
M(≥2) N(≥0)
OFF
corr
OFF
to d
OFF
(M*1
OFF
Note:
1.The outdoor failur
unit,the checking me
code=(M*10+N)-20.L
times .The wired con
correspond to DEC c
2.To get much more
failure,please refer t
unit trouble shooting

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