Samsung AVXCSH023/032/040CE Service Manual page 122

System air conditioner indoor unit outdoor unit
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Troubleshooting
Initial Tracking (Communication Check) –
1. Depending on whether an outdoor unit is a master unit or sub unit, there are some differences in what is displayed.
1) Master Unit
• When power is on, outdoor unit MICOM tries to communicate with indoor units
that are connected to its communication line (F1/F2).
• 2 display parts on the left show the main address of the indoor units subject to
a communication attempt made by the outdoor unit in sequential order.
(Ex: 0,1,2 ~47)
• 2 display parts on the right show the main address of the indoor units with
which the outdoor unit successfully communicated.
• When there is discrepancy in the number of indoor unit setup by the outdoor
unit and those where communication was made, the four display parts shows
.
2) Sub(Slave) Unit
2)
- It shows the MICOM address of MAIN PBA within the sub unit that is connected
to a master unit in turn. (ex: C9, CA, CB, CC, CD, CE, DF)
2. Figure out the number of indoor units connected to the outdoor unit through a setup switch for the number of indoor unit .
TRANS-OUT
250V/T1A
5
BD902
CN901
RED
C905
BD901
IC901
250V/T2A
C906
R370
R371
R372
C524
C907
7812
C910
CN62
BLU
6
7805
MAIN-EEV1
CN64
BLU
CN63
YEL
CN65
BLK
5
6
5
EVI-EEV
MAIN-EEV2
HR-EEV
A
B
C
CN44
CN47
WHT
WHT
8
6
4
SUCTION
DISCH3
DISCH2
DISCH1
OIL-BAL
TUBE COND/O
EVI-O
4
4
4
CN49
WHT
CN42
RED
CN41
SUMP
AIR
H-SENSOR
L-SENSOR
Setup switch for the number of Indoor units
The following is an example of how to use a switch for the number of indoor units installed.
The max. number of units for connection is 64.
3 units Connection
Tenth Digit Single Digit Tenth Digit Single Digit Tenth Digit Single Digit Tenth Digit Single Digit
0
3
3. When there is a discrepancy between the number of indoor units detected through a setup switch for the no. of indoor units
and the number of indoor units detected in the tracking process, E210 and U200 will be displayed in turn.
4-38
COMM.5V
IN-COMM
OUT-COMM
12V
DOWNLOAD
DOWNLOAD
CN92_SUB
BLK
CN91
CN31
RED
CN32
CN32
YEL
CN12
BLU
CN13
BLK
2
10
R22
R20
D
D
C349
F901
80
65
C350
C418
C924
C353
C54
64
R335
R336
C55
CD32
CD33
C409
C352
C56
C411
C412
C323
C322
C413
C303
C302
C321
C923
R337
C301
IC20
R355
LED07
GRN
C221
IC23
R356
13
C222
LED08
RED
R221
C351
24
41
25
40
IC14
PC02
PC03
PC04
IC10
IC08
IC02
DB41-00613A
OUTDOOR
LED101
LED102
LED103
LED104
LED113
SS71
GRN
R101
R102
GRN
R103
GRN
R104
GRN
R113
A
B
VA74
C
CN48
RED
RY86
RY79
RY85
RY84
RY74
EVI-I
2
3
3
3
3
3
BLU
CN86
BLU
CN75
WHT
CN85
YEL
CN84
BLU
CN73
YEL
CN71
WHT
LIQUID
EVI
OD EEV
COOLING
4-WAY
PWM
17 units Connection
31 units Connection
1
7
3
display with any problems
Reset Key
Display part
DOWNLOAD
BLK
CN10
WHT
CN100
WHT
DIS1
K1
10
7
4
IC701
C701
K2
26
C506
51
K3
C817
Q601
Q602
Q604
Q603
C344
C345
C813
C816
C354
K4
R373
76
100
C814
IC06
IC04
C812
X501
0
0
ON
ON
ON
ON
K13 K14 K15 K16
K17 K18 K19 K20
TEN
ONE
K5 K6 K7 K8
K9 K10 K11 K12
SW01
SW02
SW03
SW04
SW05
INDOOR
IC07
IC09
LED112
LED114
LED115
LED116
LED107
LED105
LED108
GRN
R112
GRN
R114
GRN
R115
GRN
R116
GRN
R107
GRN
R105
LED106
R106
GRN
GRN
RY75
RY73
RY72
RY71
RY81
RY83
RY82
RY80
2
2
2
3
7
7
CN74
RED
CN72
BLU
CN80
RED
CN82
YEL
CN81
BLK
HOTGAS
N
C-3
C-2
C-1
OIL3
OIL2
OIL1
A-CCH
64 Units Connection
1
6
4
The display part of an outdoor unit
DIS2
R501
R502
PC501
R503
R504
PC502
5
R505
3PHASE
Setup switch
380V~415V
PC503
R506
IC05
070512-00416-04
for the number
08.01.04
of Indoor units
D939
D940
3
D52
0
MCU setup
D51
D54
switch
D53
ONE
SW09
K21 K22
K23
K24
K25
K26
K27
K28
K29
K30
D56
MCU
D55
LED109
LED110
LED111
Q501
R108
GRN
R109
GRN
R110
GRN
R111
814
C504
RY78
RY77
RY76
7
3
CN77
WHT
CN76
YEL
CN70
BLK
CCH-3
CCH-2
CCH-1
POWER
Tenth Digit
Single Digit
(0~9)
(0~9)
Samsung Electronics

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