Service Manual

MID-STATIC DUCTED TECHNICAL OVERVIEW
G-12
ENGLISH
Topic TitleWiring Diagram
FRELAY FOR FRESH AIR
MOTOR(dry Contact
,rating-230VAC,3A) /E.A.0
FUSE
T250V 5A
CN1
1(L1)
G
AC PUMP
MOTOR
DC FAN
MOTOR
AB
C
AB
C
AB
C
A B
C
Tp
Tr
CN3
CN16
ROOM CARD
FLOAT SWITCH
ON ON
YCJ-A002
CN13
CN17
INFRARED SIGNAL RECEIVER
TO RJ 45 device
CN22-1
CN22
LED2
LED1
SW01
SW03
CN21
CN6
D
C
CN20
RJ45
LED3
LED4
Y/G
YL
YL
CN19
BLK
BLK
CN9
CN10
RD
BLK WHT
YL
BLU
REMOTE
CENTRAL
CONTROL
ADAPTOR
2(L2) 3
Indoor unit trouble shooting
Flash times of the
indoor unit PCBA
Wired
controller
error code
Contents of
malfunction
Possible reason
LED3 LED4
0 1 01
Malfunction of indoor
unit ambient temper-
ature sensor
Malfunction of
indoorunit pipe(coil)
temperature sensor
0 2 02
0 4 04
EEPROM wrong
of indoor PCB
0
7
07
Abnormal communi-
cation between
indoor and outdoor
units
0 8 /
Abnormal communi-
cation between
wired controlleer
and indoor unit
0 12 0C
Malfunction of
drain system
0 13 0D
Zero cross sigal
wrong
0 14 0E
Indoor unit DC
fan motor
abnormal
M(≥2) N(≥0)
HEX code
correspond
to decimal
(M*10+N)
Error of the
outdoor unit
See note 1,2
Note:
1.The outdoor failure can also be indicated by the indoor
unit,the checking method as follows:outdoor unit error
code=(M*10+N)-20.LED3 flash M times and LED4 flash N
times .The wired controller error display the HEX CODE which
correspond to DEC code (M*10+N).
2.To get much more details about the out door unit
failure,please refer to the outdoor
unit trouble shooting list.
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.
M
M
WIRED
CONTROLLER
WIRED
CONTROLLER
123
45
6
7
8
123
45
6
7
8
CN4
P1 P2
RELAY FOR AUXILIARY
(dry contact port,contact
rating 230VAC,3A
BLU
GRN
BLU
W
RD
BLU
BLK
W
W
Factory default setting
of the DIP switches
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
USYM 09UCDSA1
USYM 12UCDSA1
USYM
18UCDSA1
USYM
24UCDSA1
MODEL
OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
ON
0150539442
12V
COM
GND
GND COM
12V
W
W
WiFi MODULE
W
PGND
15V
VSP
FG
ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
ON
OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
OFF ON
ON ON
OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
ON
ON
Sensor disconected,or brok-
en,or at wrong position,or
short circuit
Sensor disconected,or brok-
en,or at wrong position,or
short circuit
EEPROM chip disconected
or broken or wrong program-
med,or PCB broken
connection wires
disconected or wrong
adress setting of indoor
unit or faulty power supply
or faulty PCB
Wrong connection or wired
controller broken,or PCB
faulty
Pump motor disconnected
or atwrong position,or the
float switch disconnected or
at wrong position,or the
PCB float port short
connector disconnected
Zero cross sigal detected
wrong
DC Fan motor disconnected
or DC Fan broken or circuit
broken
0151539442