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AE3XM18JR
SERVICE MANUAL
S1804AEX3M18J
MULITI SPLIT TYPE
ROOM AIR CONDITIONERS
(OUTDOOR UNIT)
MODEL
AE-X3M18JR
In the interests of user-safety (Required by safety regulations in some countries)
the set should be restored to its original condition and only parts identical to those
specified should be used.
CONTENTS
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATION............................................ 1-1
[2] EXTERNAL DIMENSION............................... 1-2
[3] CAPACITY TABLE ......................................... 1-3
[4] ELECTRICAL PARTS .................................... 1-3
[5] WIRING DIAGRAMS...................................... 1-4
[2]
TROUBLESHOOTING GUIDE ......................3-2
CHAPTER 2. EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGARM ......................................... 2-1
[2] FUNCTIONS .................................................. 2-2
[3] ACTIVE FILTER CIRCUIT ............................. 2-4
[4] EXPLANATION OF IPM DRIVE CIRCUIT
........ 2-6
CHAPTER 5. DISASSEMBLING PROCEDURE
[1] OUTDOOR UNIT...........................................5-1
CHAPTER 4. REFRIGERATION CYCLE
[1] REFRIGERATION SYCLE.............................4-1
[2] REFRIGERANT PIPE INSTALLATION
WORKS .........................................................4-2
Parts List
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PROTECTIVE FUNCTIONS AND OPERATIONS ............................................................ 3-1
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
AEX3M18JR
CHAPTER 1. SPECIFICATIONS
AEX3M18JR
Service Manual
[1] SPECIFICATION
ITEMS
Cooling capacity
3-INDOOR OPERATION
Heating capacity
3-INDOOR OPERATION
Moisture removal
✩ Electrical data
Phase
Rated frequency
Rated voltage
Rated current
Rated input
Power factor
Compressor
Refrigerant system
INDOOR UNIT
AY-XPM7FR/9FR/12FR
kW
7K & 7K & 7K
kW
7K & 7K & 7K
Liters/h
Hz
V
Cool
A
Heat
A
Cool
W
Heat
W
Cool
%
Heat
%
Type
Model
Oil charge
Evaporator
Condenser
Control
Name of refrigerant
Refrigerant volume
Noise level (at cooling)
dB(A)
5.2 (2.2 – 7.2)*
6.8 (2.2 – 8.4)*
2.0
Single
50
230V
6.5 (2.0 – 11.7)*
7.6 (1.9 – 11.4)*
1410 (430– 2560)*
1660 (420 – 2480)*
95
95
Hermetically sealed DC twin rotary
DA130A1F-28F
Ester oil VG74
Silt Fin and Grooved tube type
Corrugate Fin and Grooved tube type
Expansion valve
R410A
1800g
High/Med/Low
7FR: 37/34/28
9FR: 39/36/28
46
12FR: 40/37/29
Fan system
Drive
Direct drive
.
m3/min.
Air flow quantity (at cooling)
Fan
Connections
Refrigerant coupling
Refrigerant tube size Gas, Liquid
Maximum length (per unit)
Maximum length (total)
Maximum charge-less length
Maximum height difference
Drain joint
Others
Safety device
Air filters
Net dimensions
Net weight
OUTDOOR UNIT
AE-X3M18JR
m
m
m
m
mm
High/Med/Low
7FR: 8.0/7.4/5.0
9FR: 8.6/7.9/5.6
12FR: 9.0/8.6/6.1
Cross flow fan
33
Propeller fan
Flare type
3/8”, 1/4”
25
50
40
10
O.Dφ18
Compressor: Thermistor
Fan motors: Thermal fuse (indoor unit).
Thermal protector (Out door unit)
Fuse, Micro computer control
Anti-mold polypropylene net of injection type (Washable)
Width
mm
790
950 (890+60)
Height
mm
278
645
Depth
mm
198
323 (290+33)
kg
9
56
NOTE: The condition of star “✩“marked item are ‘ISO5151’:
*: Representative connection
1–1
AEX3M18JR
320
[2] EXTERNAL DIMENSION
950
60
320
117
527
645
890
940
323
5
52
645
1–2
24
170
24
570
74
151
52
210
621
290
52
179
284
50
890
AEX3M18JR
[3] CAPACITY TABLE
Outdoor Units
AE-X3M18JR
Recommended Combination
Indoor Units
AY-XPM7/9/12FR, GS-XPM9/12, GS-XPM7/9/12FR
9
9
9
12
7
7
9
9
7
9
7
7
7
7
7
COOLING CAPACITY TABLE
Operating
Status
3-Room
2-Room
1-Room
Combination of Indoor
Units
A
B
C
09
09
09
12
09
07
12
07
07
09
09
07
09
07
07
07
07
07
12
09
OFF
12
07
OFF
09
09
OFF
09
07
OFF
07
07
OFF
12
OFF
OFF
09
OFF
OFF
07
OFF
OFF
Cooling Capacity (kW)
A
1.7
2.2
2.4
1.9
2.0
1.7
2.9
3.2
2.5
2.5
2.0
3.4
2.6
2.0
B
1.7
1.7
1.4
1.9
1.6
1.7
2.1
1.8
2.5
2.0
2.0
OFF
OFF
OFF
C
1.7
1.3
1.4
1.5
1.6
1.7
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
RATING (Min. - Max.)
5.2(2.2 - 7.2)
5.2(2.2 - 7.2)
5.2(2.2 - 7.2)
5.2(2.2 - 7.2)
5.2(2.2 - 7.2)
5.2(2.2 - 7.0)
5.0(1.9 - 6.5)
5.0(1.9 - 6.4)
4.9 (1.9 - 6.2)
4.5 (1.9 - 5.7)
4.0 (1.9 - 5.2)
3.4 (1.4 - 4.0)
2.6 (1.4 - 3.3)
2.0 (1.4 - 2.7)
Running Current (A)
Power Consumption (W)
RATING (Min. - Max.)
6.5 (2.0 - 11.7)
6.5 (2.0 - 11.7)
6.5 (2.0 - 11.7)
6.5 (2.0 - 11.7)
6.5 (2.0 - 11.7)
6.5 (2.0 - 11.3)
6.4 (1.6 - 11.0)
6.4 (1.6 - 10.9)
6.3 (1.6 - 10.1)
5.5 (1.6 - 8.6)
4.6 (1.6 - 7.1)
4.4 (1.5 - 6.2)
3.1(1.5 - 4.3)
2.4 (1.5 - 3.2)
RATING (Min. - Max.)
1410 (430 - 2560)
1410 (430 - 2560)
1410 (430 - 2560)
1410 (430 - 2560)
1410 (430 - 2560)
1410 (430 - 2460)
1400 (350 - 2400)
1400 (350 - 2380)
1380 (350 - 2200)
1190 (350 - 1870)
1000(350 - 1550)
950 (320 - 1350)
680 (320 - 950)
520 (320 - 710)
HEATING CAPACITY TABLE
Operating
Status
3-Room
2-Room
1-Room
Combination of Indoor
Units
A
B
C
09
09
09
12
09
07
12
07
07
09
09
07
09
07
07
07
07
07
12
09
OFF
12
07
OFF
09
09
OFF
09
07
OFF
07
07
OFF
12
OFF
OFF
09
OFF
OFF
07
OFF
OFF
Heating Capacity (kW)
A
2.3
2.9
3.1
2.4
2.7
2.3
3.8
4.2
3.1
3.2
2.5
4.0
3.0
2.4
B
2.3
2.2
1.8
2.4
2.1
2.3
2.9
2.4
3.1
2.5
2.5
OFF
OFF
OFF
C
2.3
1.7
1.8
1.9
2.1
2.3
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
RATING (Min. - Max.)
6.8 (2.2 - 8.4)
6.8 (2.2 - 8.4)
6.8 (2.2 - 8.4)
6.8 (2.2 - 8.4)
6.8 (2.2 - 8.4)
6.8 (2.2 - 8.4)
6.7(1.6 - 8.0)
6.6(1.6 - 8.0)
6.2(1.6 - 8.0)
5.6(1.6 - 7.3)
5.0(1.6 - 6.4)
4.0 (1.1 - 5.2)
3.0 (1.1 - 4.2)
2.4 (1.1 - 3.3)
Running Current (A)
Power Consumption (W)
RATING (Min. - Max.)
7.6(1.9 - 11.4)
7.6(1.9 - 11.4)
7.6(1.9 - 11.4)
7.6(1.9 - 11.4)
7.6(1.9 - 11.4)
7.6(1.9 - 11.4)
9.0 (1.7 - 12.2)
9.0 (1.7 - 12.2)
8.2 (1.7 - 12.2)
7.1 (1.7 - 10.6)
6.0 (1.7 - 8.7)
6.4(1.5 - 9.8)
4.4 (1.5 - 7.2)
3.3 (1.5 - 5.2)
RATING (Min. - Max.)
1660(420 - 2480)
1660(420 - 2480)
1660(420 - 2480)
1660(420 - 2480)
1660(420 - 2480)
1660(420 - 2480)
1970 (380 - 2670)
1970 (380 - 2670)
1800 (380 - 2670)
1550 (380 - 2310)
1320 (380 - 1910)
1400 (330 - 2150)
970 (330 - 1570)
720 (330 - 1130)
[4] ELECTRICAL PARTS
Compressor
Outdoor fan motor
Fuse 1, 101
Fuse 6
Fuse 3, 4
Fuse 5
DA130A1F-28F
MLB051
—
—
—
—
Hermetically sealed DC twin rotary
QFS-GA065JBZZ(20A,250V)
QFS-GA064JBZZ(1A,250V)
QFS-GA062JBZZ(3.15A,250V)
QFS-GA063JBZZ(2A,250V)
1–3
AEX3M18JR
[5] WIRING DIAGRAMS
from CONTROL PWB CN14
from ELECTROLYTIC CAPACITOR C10(+)
from ELECTROLYTIC
CAPACITOR C10(-)
from COMPRESSOR TERMINAL
W "ORANGE"
from COMPRESSOR TERMINAL
U "RED"
from COMPRESSOR TERMINAL
V "WHITE"
from CONTROL PWB BCN1
IPM P.W.B.
1–4
RELAY P.W.B.
from CONTROL
P.W.B. "CN9A"
from 4 WAY VALVE
from IPM "U", "V", "W"
.W
R
WE
PP
from
1–5
SU
P
LY
PO
RELAY P.W.B and POWER SUPPLY P.W.B.
.B.
from ACTIVE FILTER MODULE
from IPM P.W.B. "CN114"
POWER SUPPLY P.W.B.
from DIODE BRIDGE DB1 "~"
from DC FAN MOTOR
from TERMINAL BOARD
POWER SUPPLY "L"
from TERMINAL BOARD
UNIT C "1"
from TERMINAL BOARD
UNIT C "N"
from CONTROL P.W.B. "BCN16"
from CONTROL BOX
from CONTROL P.W.B. "BCN17"
from CONTROL P.W.B. "BCN15"
from TERMINAL BOARD
POWER SUPPLY "N"
AEX3M18JR
CONTROL P.W.B and DISPLAY P.W.B
1–6
from POWER SUPPLY
P.W.B. "CN17"
from IPM PWB "CN101"
from EXPANSION VALVE C
from SUCTION THERMISTOR
from THERMISTOR
COMP. TENP.
from EXPANSION VALVE B
HEAT EXCHANGER TEMP.
from HEAT SINK THERMISTOR
OUT DOOR TEMP.
from EXPANSION VALVE A
SUCTION TEMP.
CONTROL P.W.B
DISPLAY P.W.B
from RELAY
P.W.B. "CN9"
from POWER SUPPLY P.W.B. "CN16"
from POWER SUPPLY P.W.B. "CN15"
from TERMINAL BOARD
UNIT A - "N"
UNITA ~ C - "2"
from TERMINAL BOARD
POWER SUPPLY
AEX3M18JR
(TERMINAL BOARD C)
(TERMINAL BOARD B)
g
h
L
2
1
N
2
1
GREEN/YELLOW
GREEN/YELLOW
UNIT C
UNIT B
UNIT A
PUMP DOWN
SW
WIRE CHECK
SW
WINTER COOL
(DISPLAY PWB)
2
1
BROWN
5
6
7
2
3
4
1
CN11
LED3
LED2
LED1
SW2
SW1
JP2
2.2k
2.2k
2.2k
R214
10k
5V
BLUE
ORANGE
RED
BCN11
5
6
7
2
3
4
1
BT1
BT2
BLUE
T4
BLACK
GREEN
2
C4A
275V
0.033uF
R8A
1W
100
CN1
R209
10k
R217
RY1
C68
0.01u
16V
TH6
TH7
TH8
3
C7
C
(thermistor)
N
A
B
FB2
CN8A
8
7
6
5
4
3
2
1
CN8C
6
5
4
3
2
1
1
3
5
7
CN6
CN9A
5
4
5
2
4
1
3
2
1
5
4
3
2
1
8
CN3
Q1
KRC102S
3
CN9
(compressor)
TH1
TH2
(heat
exchange)
(outdoor)
TH3
(suction)
TH4
(SUCTION A)
(SUCTION B)
(SUCTION C)
FC7
5V
4
50V1000pF
IC12
KID65004AP
DC Fan
Motor
R6
1/2W
150k
R9
5.6k
2 PC1
PC81716
C6
0.01uF
50V
1
250V
3.15A
C15
C13
C11
FUSE3
4
C16
2
C14
C12
R7
1/2W
150k
4
(RELAY PWB)
R212
10k
C67
R213
50V
10k
C66 0.01uF
50V
R215
0.01uF
R216
R211
10k
D3
R4 1/2W
150k
D2
1 CN4
R210
10k
D5
1/2W
R5 150k
D4
C11, C13:
4700pF
250V
C12, C14:
10000pF
250V
BROWN
RY1
1
A
4-WAY
Valve
3
3
B
L6
NR1
250V
20A
SA1
NR2
T1
R3
1/4W
3.9k
(TERMINAL BOARD 1)
Thermal Fuse
(UNIT C)
(UNIT B)
(UNIT A)
N
(TERMINAL BOARD A)
BLUE
BLUE
BLUE
BLUE
BROWN
BROWN
BROWN
C1
275V
1uF
5V
1.0kF
1/4W
R10
L5
D1
R12
6.49kF
R11
1.0kF
C20
13V
C60
25V
0.1uF
2W
1k
R90A
C81
4700P
250V
2W
1k
R85A
R98A-98G:6.8kF
C82
0.1u
25V
2W
1k
R90B
D21
2W
1k
R85B
C72
0.1u
25V
D20
2W
1k
R80B
2W
1k
R80A
D19
C73
0.1u
25V
C69
4700P
250V
15V
6.8k
R92
R16
3.3
1/2W
C61
10V
100uF
2W
1k
R90C
3.3K
R89
2W
1k
R85C
3.3k
R84
2W
1k
R80C
3.3k
R79
2
2
3
R87
56k
4.7k
R86
R88
C55A-55G:10u16V
R97A
R97B
R97D
R97C
R97E
R97F
D14
1
2
3
R93
10k
D15
+
-
C28
25V
+
-
C63
0.01u
50V
R96
3.3k
5V
R29
C86A-C86H:0.01u50V
1
2
3
R22
10k
R94
3.3k
5V
+
15V
5
6
7
8
b
a
c
FB3
-
5V
R220
270
R
4
3
2
1
CNE
C46
25V
0.1u
R221
R70
40
39
26
27
28
29
30
31
32
33
34
35
36
37
38
25
S
MD0
MD1
MD2
P40
P37
P36
P35
P34
P33
P32
P31
P30
P27
P26
P25
P24
R222-224
:10k
FC8
R67
1k
IC2
BLUE
R33
OSC1
50V
1u
C47
f
R34
1/4W
9.53kF
R68
1k
R32
34.8kF
R35
C57
25V
0.1uF
R66
R65
10k
8
7
6
5
4
2
3
4
monitor
1
(CN)
C59
50V
0.01uF
3
5V
C58 25V
0.1uF
D17
BLUE
TN
TP
YELLOW
FC6
R36
1M
+
10k
IC5
2
18V
12
KIA339F
5 +
4 -
5V
D16
C56
25V
0.1uF
R30
560F
3
BLUE
1 2 3 4 5 6 BCN13
+
24 23 222 21 20 19 18 17 16 15 14 13 12 11 10 9
270
lo
P
C10
C9
1000uF
1500uF
420V
420V
FC5
FC2
YELLOW
YELLOW
1 2 3 4 5 6
L2
R31
1/4W
4.64kF
4.7k
R69
4.7k
13V
C34
10V
100uF
5V
L1
CN13
AF1
ACT(PFC)
SACT32420
+
L1
6 5 4 3 2 1 5V
R73
10k
Q
+
-
FB1
5V
CNF
C98
0.1u
25V
4
3
2
1
IC6
EEPROM
C33
0.1uF
25V
WHITE
R25
1/4W
1.65kF
FC3
7805
IC7
KIA7805API
1/4W
IC8
R24
1/4W
22k
0.033uF
25V
68k
C32
R23
R21
1/4W
1.5k
AC2
AC1
C31
0.1uF
25V
1/4W
4.7k
C29 R27
25V 10k
18V
+
-
250V
0.01uF
C26
GRAY
C30 R28
35V 10k
150uF
C27 +
35V
150uF
C62
0.1u
25V
1.8k
50V
1000P
C75
50V
1000P
C83
R83
1.8k
R82
56k
4.7k
R81
R78
1.8k
R77
56k
4.7k
R76
50V
1000P
C76
R95
10k
CN16
KRA102S
Q9
6
5
8
11
10
9
13
12
D13
BLACK
PTC1
FUSE4
250V
3.15A
MRY1
BLUE
KRC105S
Q10
TR1
NR3
R97A-R97H:10k
R97G
2
3
2
PC853X
4 PC9 1
PC817X3
1 PC8 4
3
3
2
PC853X
4 PC7 1
PC817X3
1 PC6 4
3
3
2
PC853X
4 PC5 1
PC817X3
1 PC4 4
5V
10k
C25
680pF
+ C64
10V
- 47uF
R91
(CONTROL PWB)
C65
R15
3.3
1/2W
C70
4700P
250V
FUSE5
2A 250V
C21
470pF
D11
2W
10
R17
3
1
T6
C19
10V
- 220uF
+
R13A, 13B, 13C, 13D, 13E, 13F:
1M
1/2W
C22
R13D 220pF
R13A
R13E 2kV
R13B
C23 D9
R13F
R13C
+ 50V
- 10uF
R18
8 1 2 3 4
IC4
1.5k
STR-L472
1/4W
6
7 10 9
Q2
2SA
ZD1
1586G
C24
R20
3300pF
3.3k
1/4W
1/4W
D10
680
R14
250V
1A
FUSE6
C17
C18
R2
1/4W
510k
R98F
3
R98E
1
R98G
C2
275V
1uF
R98D
3
R98C
1
R98B
C3
275V
1uF
FUSE1
R98A
N
FC4
C55F
GREEN/YELLOW
C55G
GREEN/YELLOW
R19
C8, 20:
275V
2.2uF
C8
C86F
BCN16
C86E
R1
1/4W
510k
C86G
680uF
C86D
DB1
C86A
L4
C86B
L3
C55E
R224
680uF
C86C
ORANGE
BROWN
R26
4.64kF
1/4W
R223
R32, R33:1/2W270kF
(POWER SUPPLY PWB)
C55D
R222
T2
R97H
(B)
T5
C86H
(O)
(Y)
(W)
(POWER SUPPLY)
C55B
2
1
C44
0.1u
25V
P
IC1
(U)
(V)
(W)
(U)
(X)
(V)
(Y)
(W)
(Z)
B
Y
O W
C78
50V
0.01uF
C53
50V
0.01uF
C79
0.01u
50V
R227
P
65
66
79
78
77
76
75
74
73
72
71
70
69
68
67
80
C54
10u
16V
R230
6.8kF
1k
5V
1
2
CN5
1
3
CN8B
R228
10k
C45
25V
0.1uF
P70
P71
P72
P73
P74
P75
P76
P77
P80
P81
P82
P83
P84
P85
P86
P87
JPF
CN15
e
0.022uF
50V
C120
8 7 6 5 4 3 2 1
TH5
(Thermal Fuse)
g
h
5V
R225
10k
5V
26
Z
1k
D8
W
X
Y
R235
R236
R237
-
10
15V
BCN17
5V
4
8
2
3
1/4W
100
1/4W
R48
100
R49
R47
FC1
R60
R62
R203
Y
1
6
8
9
10
9
7
Z
CN101
8
Z
W
O
Y
B
R256
1k
1/4W
R254
1k
1/4W
10k
R261
200kF
C117
1000pF
C118
1000pF
C116
1000pF
C115
1000pF
C114
1000pF
C113
1000pF
200kF
R205
R204
IC3
KID65004AP
5V
R257
2.2k
1/4W
R255
2.2k
1/4W
Q15
10k
R260
FO
18
WN
21
VN
20
UN
19
9
WP
5
VP
8
6
7
4
3
2
IPM
VPC 11
VNC 15
VNI 14
VWFS 13
VPI 10
VWFB 12
VVFS
VVFB
VPI
VUFS
1
VPI
UP VUFB
Q13-15:2SA1020Y
R259
10k
R253
2.2k
1/4W
Q14
Q13
R112
R107
6.8k
6.8k
25V +
C105 100uF
C122
0.1uF
C123
0.1uF
(IPM PWB)
2.0kF
2
V 3
W
4
X 5
U
Q8
Q7
R202
20kF
KRC105S
KRC105S
R252
1k
1/4W
R
S
R
O
0.1uF
C112
C104
330uF
25V
-
+
C108 0.1uF
C103
25V
100uF
+
C107 0.1uF
0.1uF
C111
+
C106 0.1uF
0.1uF
C110
+
0.1uF
C109
W
Y
BL
O
D37
D35
D36
D34
R
GR
Y
W
D33
BL
D32
D30
R
GR
W
Y
BL
O
D31
D29
D28
D27
D26
GR
FC9
ZD100
HZ24-2
e
CN12B
CN12A
(valve A)
FC10
(valve B)
CN12C
(valve C)
FC11
D100
D103
C102
25V
100uF
D102
C101
25V
100uF
D101
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
1 2 4 6 CN2
R57, R59, R61:
1/2W 196kF
R58, R60, R62:
1/2W 180kF
R61
R58
R56
C
R59
R57
1/2W 196kF
R55
ORANGE
WHITE
RED
R55, 56:
TW
TV
R50
1/4W
100
1/4W
100
KRC105S
Q6
10
7
6
5
4
3
2
1
a
b
c
13V
BCN1
+
-
IC9
15V
R201
100kF
25
TU
R51
7.5kF
R52 R53 R54
C38 C39
C40
C38, C39, C40:
R52, R53, R54:
50V 330pF
14.7kF
KIA339P
IC5
C37
25V
0.1uF
D38
R233238:390
1/4W
C51
C52 25V
50V
0.1uF
15V
0.01uF
Z
V
R238
U
R233
R239
10k
10k
JP4
JP5
1
8
9
7
6
24
V
23
W
U
(IPM PWB)
D6
+ 11
-
+
-
+
MRY1
5V
C97
25V
0.1uF
R234
R232
10k
R231
C96
50V
1000pF
R200
5V
6 5 4 3 2 1
3
12
15V
6 5 4 3 2 1
5V
Q11
13V
13
14
1
18V
QM101(IPM)
KRC245M
1.8k
R46
18kF
N
16
17
22
P
R113
8 7 6 5 4 3 2 1
R44
1.8k
R100
R101
R102
1.8kF
ZD101
50V 1000pF
C119
0.33uF
630V
C121
(HEATSINK)
BCN15
R219
10k
C43 5V
100u
10V
10k
C80
0.1u
25V
T
C85
0.01u
50V
R229
10k
R226
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
D7
C93
25V
0.1uF
R
S
T
Q
1
2
3
4
5
6
7
8
9
CND
flash
writer
Q3
Q4
KRA102S
R40
1k
4 3 2 1 CN14
KRC105S
R38
10k
R37
1.8k
250V
FUSE101
20A
R100:5W 0.020
4 3 2 1
CN114
R106
1/4W
130k
R105
1/4W
130k
R104
1/4W
130k
R103
1/4W
130k
R262
10k
C41
D12
C55C
C49
2k
1/4W
C55A
R240 10k
1.8k
R45
R43
1k
C48
CN17
WHITE
X1
X0
VSS
P41
P42
RST
P43
P44
P45
P46
P47
P50
P51
P60
P61
P62
P63
P64
P65
P66
P67
AVSS
AVCC
AVR
P23
VCC
P22
P21
P20
P17
P16
P15
P14
P13
P12
P11
P10
P07
P06
P05
P04
P03
P02
P01
P00
VCC
VSS
C
R41
1k
R42
1k
C50
25V
0.1uF
50V
1000pF
50V
1000pF
50V
1000pF
R108
R109
R108-R111:
1/4W
33
R110
N
1–7
R111
CT1
AEX3M18JR
AEX3M18JR
Manual
CHAPTER 2. EXPLANATION OF CIRCUITService
AND OPERATION
AEX3M18JR
[1] BLOCK DIAGARM
Power supply circuit
1A
Fuse
20 A
Fuse
Smoothing circuit
Filter circuit
Active filter circuit
AC power
CPU oscillator circuit
DC power supply circuit
DC over voltage detection circuit
Expansion valve A drive circuit
Expansion valve A
Expansion valve B drive circuit
Expansion valve B
Expansion valve C drive circuit
Expansion valve C
4-way valve relay drive circuit
4-way valve
3.15 A
Fuse
2A
Fuse
Outdoor fan motor drive circuit
Outdoor fan motor
20 A
Fuse
Power transistor module drive circuit
Power transistor module
Unit - unit wiring
(AC power and serial
signals)
Serial I/O circuit
CPU reset circuit
CPU
Compressor
DC overcurrent detection circuit
AC overcurrent detection
Current transformer
Compressor thermo. circuit
Compressor thermistor
(RE)
CN8A
Heat exchanger pipe thermo. circuit
Heat exchanger pipe thermistor
(OR)
CN8A
Outdoor temp. thermo. circuit
Outdoor temperature thermistor
(G)
CN8A
Suction pipe thermo. circuit
Suction pipe thermistor
(BK)
CN8A
Heat sink thermo. circuit
Heat sink thermistor
(BK)
CN8B
Unit A thermo. circuit
Thermistor unit A
(BL)
Unit B thermo. circuit
Thermistor unit B
(WH)
Unit C thermo. circuit
Thermistor unit C
(BR)
LED drive circuit
LED
Pump down switch circuit
Wire check switch circuit
Position detection circuit
Compressor
Thermal fuse circuit
Thermal fuse in terminal board
2–1
CN5
Suction thermistor CN8C
AEX3M18JR
[2] FUNCTIONS
1. FREQUENCY CONTROL
2. OVER CURRENT PROTECTION
1) AC current peak control
DC over current detection, AC over current detection. To protect
against over current due to sudden change in load, the compressor is
stopped if 24A DC is exceeded in the DC section. If the set value of
AC current is exceeded in the AC section, the compressor is stopped.
90 seconds after the compressor has been stopped, another starting
try will be made. Three retries are allowed. On the fourth retry, a complete stop request signal is sent to the indoor unit, and the outdoor unit
will remain stopped until the indoor operation is stopped. DC over current is detected by the power module. AC over current is detected by
CT1, on the outdoor PWB.
Cooling mode
13.6A
Heating mode
13.6A
2) Prevention control of outdoor heat exchanger overheating
If the temperature of the outdoor heat exchanger exceeds the overheating prevention line 1 or 2 during cooling, the operating frequency is lowered by approximately 5 to 15Hz. After that, the
frequency is lowered approximately 5Hz once every 60 seconds or
approximately 15Hz once every 120 seconds. When the temperature of the outdoor heat exchanger goes below the overheating
prevention clear line, the frequency is raised by approximately 5Hz
once every 60 seconds, and normal operation is restored. If the frequency is lowered to minimum frequency without the temperature
of the outdoor heat exchanger decreasing and this condition lasts
for 1 minute, the compressor will be stopped.
Overheating Prevention line 1
55°C
Overheating Prevention line 2
57°C
Overheating Prevention clear line
54°C
Cooling mode
16.0A
3. COMPRESSOR PROTECTION CONTROL
If the temperature of the compressor exceeds 113°C, the compressor
is stopped. In this case, the outdoor fan is not stopped until the temperature of compressor drops below 99°C. In 90 seconds after the
compressor is stopped, if the temperature is below 90°C, another
starting try will be made. Three retries are allowed. On the fourth retry,
a complete stop request signal is sent to the indoor unit, and the outdoor unit will remain stopped until the indoor operation is stopped.
Lower 5Hz once every
60 seconds
Lower 15Hz once
every 120 seconds
4. POWER TRANSISTOR MODULE PROTECTION
3) Prevention control of compressor overheating
If the temperature of the compressor exceeds approximately 108
°C, the operating frequency is lowered approximately 5Hz. After
that, the frequency is lowered approximately 5Hz once every 60
seconds. When the compressor temperature drops below approximately 108°C, the frequency is raised approximately 5Hz once
every 60 seconds, and normal operation is restored. If the frequency is lowered to minimum frequency without the temperature
of the compressor decreasing, and this condition lasts for 1 minute,
the compressor will be stopped.
If the temperature of the heat-sink exceeds 90°C, the compressor is
stopped. In this case, the outdoor fan does not stop, and when the
temperature of the heat-sink decreases to 80°C 180 seconds after
operation is stopped, another try will be made. Three retries are
allowed. On the fourth retry, a complete stop request signal is sent to
the indoor unit, and the outdoor unit will remain stopped until reset is
performed. At this time, the 3-minutes delay for control of the outdoor
unit will not function; therefore, do not cancel by removing the plug and
cutting the power. Also if the temperature of the heat-sink exceeds
100°C, a complete stop request signal is sent to the indoor unit, and
the outdoor unit will remain stopped until reset is performed. At this
time, the 3-minutes delay for control of the outdoor unit will not function; therefore, do not cancel by removing the plug and cutting the
power.
4) Prevention control of indoor heat exchanger overheating
Two minutes after room several decrease If the temperature of any
of indoor heat exchangers exceeds the overheating prevention line
1 or 2 during heating, the operating frequency is lowered to minimum frequency. When the temperature of all of indoor heat
exchangers go below the overheating prevention line 1, the frequency is raised by approximately 5Hz once every 60 seconds,
and normal operation is restored. If the condition that the frequency
is minimum lasts for 2 minutes, the compressor will be stopped.
5. SERIAL SIGNALS
Serial signals consist of all 96-bit signals. If the condition as outdoor
unit unable to receive a serial signal from the indoor unit continues for
30 seconds, it closes the expansion valve which corresponds to the
room which can not be communicated. If all indoor units can not communicate with the outdoor unit, the compressor is stopped.
<when normal >
If the temperature of any of indoor heat exchangers exceeds the overheating prevention line 1 or 2 during heating, the operating frequency
is lowered by approximately 5 to 15Hz. After that, the frequency is lowered approximately 5Hz once every 60 seconds or approximately
15Hz once every 90 seconds. When the temperature of all of indoor
heat exchangers go below the overheating prevention line 1, the frequency is raised by approximately 5Hz once every 60 seconds, and
normal operation is restored. If the condition that the frequency is minimum lasts for 2 minutes, the compressor will be stopped.
54ºC
(59ºC)
47ºC
(60ºC)
44ºC
(57ºC) Overheating
prevention
line 1
900
2100
6. THERMISTOR OPEN OR SHORT
When compressor, heat exchanger, outdoor thermistor, suction thermistor (CN8A) are in OPEN or SHORT condition, even if they are in
the condition which an operation signal is transmitted from indoors, the
compressor will not start. If any suction thermistors (CN8C) become
OPEN or SHORT resistance, the protective procedure will work only
for the cycle corresponding to the malfunctioning suction thermistor.
Overheating
prevention line 2
57ºC
(62ºC)
7. MISWIRING CHECK
“Mis-wiring check” is conducted by detecting the indoor heat
exchanger temp. For example, when the expansion valve for only
room A is open, and the wiring is correct, the indoor heat exchanger
temp for room A will reduce. If the wiring is incorrect, the indoor heat
exchanger temp for a different room will reduce.
51ºC
(57ºC)
48ºC
(54ºC)
When ON
(When OFF)
Heating mode
16.0A
8. SAFETY TIME
5200
When the unit is operated by the remote control after the breaker is
turned on, the safety device of the compressor will work and the compressor will not operate for 90 seconds.
7200
2–2
AEX3M18JR
9. PUMP DOWN SWITCH
When the PUMP DOWN SWITCH (SW1) is pressed for 5 seconds or
more, the total A/C system will start its TEST RUN automatically and
the compressor frequency will be 48.3 Hz. When operating only the
outdoor unit (cooling 48.3 Hz fixed mode) To make only the outdoor
unit run in cooling mode, and apply a voltage of 230 V AC to N and L
on the terminal board and push the pump down switch. (SW1) (Avoid
operating the outdoor unit alone for long periods of time.)
More than
20 min.
Heating
operation
start
10. CONTROL OF COMPRESSOR OR AND EXPANSION VALVE
For 90 seconds after turning on the AC power, the compressor will not
be activated even if indoor units request the compressor to do so. If
the compressor receives a request from one or more indoor units after
90 seconds have passed, it will be turned on and the expansion valve
corresponding to the requesting indoor unit will be opened. When the
indoor unit of a room requests for the cooling operation to the outdoor
unit and it runs responding to the request, requests for the heating
can't be accepted if the indoor units in other rooms send individual
requests. If the indoor unit in another room sends a request for the
heating operation, the operation lamp and timer lamp of the indoor unit
in that room start flashing in turn to inform that the unit is in the standby
mode. If the operation in one room is stopped while the indoor unit in
another room is in the stand-by mode, the operation mode requested
by the indoor unit which is now in the stand-by mode will be accepted.
At this time, the compressor will be temporarily stopped to switch the
four- way valve and restart after 90 seconds. During the cooling or dry
operation, the expansion valve corresponding to the indoor unit that is
not running is closed. Therefore, the refrigerant will not flow into those
units However, if the heating operation is in progress, it is possible that
it flows into indoor units which are out of operation depending on the
cycle conditions. As a result, the indoor exchanger may be heated up
even if it is not activated. This is not abnormal. When the operations in
all rooms are stopped, the compressor is off and the expansion valves
in all rooms are fully opened.
More than
20 min.
More than
20 min.
Defrosting
Defrosting
Max. 10 min. Max. 10 min.
3) During defrosting
When defrosting begins, the compressor stops. Approximately 1
minutes later, the compressor reactivates in the refrigeration cycle,
and the outdoor heat exchanger is defrosted. Each mode is as follows:
The outdoor fan is s topped
The operating frequency is as shown in the table below.
The indoor fan is s topped.
All expansion valve are open.
for 5 minutes 3900 rpm
after that 3700 rpm
4) Defrost stop
When defrosting time exceeds 10 minutes When the temperature
of the outdoor heat exchanger rises above approximately 15°C
Defrost stop is determined by either of the above conditions, and
the compressor is stopped. At the same time, the outdoor fan go
ON. The compressor is reactivated in the heating cycle 1 minutes
after it was stopped, and normal control resumes.
11. DEFROST OPERATION
12. Power factor module Output voltage
1) Overview
If a voltage error over 450V is detected at power factor module output
voltage, the compressor is stopped for 3 minutes. In this case, the outdoor fan does not stop for 3 minutes, and another try will be made.
Three retries are allowed. On the fourth retry, a complete stop request
signal is sent to the indoor unit, and the outdoor unit will remain
stopped until reset is performed. At this time, the 3 minutes delay for
control of the outdoor unit will not function; therefore, do not cancel by
removing the plug and cutting the power.
Defrosting begins during heating if the conditions for compressor
operation time and outdoor heat exchanger temperature are met.
When defrosting begins, the indoor and outdoor fans stop. Defrosting stops when the temperature of the outdoor heat exchanger
goes above approximately 15°C or defrosting time exceeds 10 minutes.
Defrost
mask time
Defrost
mask time
Defrost
mask time
.
Heating
begins
Defrosting
Max. 10 min.
Defrosting
Max. 10 min.
2) Defrosting
If the compressor operation time is more than 20 minutes in the
heating mode and the outdoor air temperature and outdoor heat
exchange temperature satisfy the defrosting conditions, the
defrosting operation is started. When the defrosting operation is
started, the indoor fan starts to run intermittently. When the outdoor
heat exchanger temperature reaches approx. 15°C or above or
when the defrosting time exceeds 10minutes, the defrosting operation is quit.
2–3
AEX3M18JR
[3] ACTIVE FILTER CIRCUIT
This circuit uses Active Filter Module and IPM as the figure below for the high efficiency operation of compressor.
Active Filter
Choke coil
Rectification
circuit
AC
+
Noise filter
circuit
Compressor
IPM
Sine wave current
Voltage raise signal
ON/OFF
Compressor
Driving signal
Positional
detection
IPM
Control
source
Control source
IC1
1. Active Filter
In the case the direct current is obtained by the diode bridge and smooth capacitor from the commercial power source, the current wave shape will be
the pulse shape at the peak of the voltage wave shape as shown in the figure below. For this reason, the harmonic current will be generated and at
the same time the power factor will be deteriorated. While monitoring the AC input voltage in the control circuit, in order to be the same phase and
wave shape as this voltage wave shape, IGBT is made ON/OFF by the carrier frequency of approximately 20 kHz. By adoption of this Active Filter,
the current wave shape can be made to the sine wave synchronized to the commercial power source and the power factor can be made to almost
99%. As a result of this, reactor can be disused. Active Filter works for the improvement of power factor and as the countermeasures for the harmonic
current.
Power-supply voltage
(50Hz)
Current waveform
(Before)
Current waveform
(Active Filter)
2. Active Filter Voltage Raise Circuit
The IGBT in the figure below is the switching transistor of the Active Filter. By adding ON signal to the gate of IGBT from the control IC, IGBT turns
ON and the collector current Ic flows. This current flows from the + side of the diode bridge DB to the Choke coil, the - side of the diode bridge DB
through IGBT from the Choke coil L. At this time, energy is stored in the choke coil L. Next, when gate signal of IGBT turned OFF, IGBT will be turned
OFF and the energy stored in L during the ON time of IGBT will be discharged through the diode D, electrolytic capacitor C, load, primary side and the
+ side of DB. Assuming the input voltage of Active Filter (voltage between + and - of DB) as Ei, the output voltage (voltage at the both ends of smooth
capacitor) as Vo, switching cycle of IGBT as T and ON time of IGBT as ton, the voltage between collector emitter of IGBT Vs will be as follows;
Vs= 0 (during ON of IGBT: ton)
Vs= Vo (during OFF of IGBT: T-ton)
Here, assuming no loss in L and IGBT, average value of Vs turns equal to Ei,
Ei = (T-ton)/T x Vo
Therefore
Vo = T/(T-ton) x Ei
As ton is a smaller value than T, output voltage Vo will be higher than input voltage Ei.
2–4
AEX3M18JR
L
+
DB
D
Control
Ei
+
Vs
IC
RL
Vo
C
IGBT
-
L1
(+)
L2
P
(-)
Io
PFC control
1
2
3
4
5
6
BCN13
Active Filter Circuit
3. Active Filter Driving Electronics Circuit
At the operation of compressor, the microcomputer (IC1), as the 50th pin gets “H”, will turn the transistor Q4 ON through the transistor Q3. By this,
18V is supplied to the 3rd pin of connector BCN13 of the Active Filter and the Active Filter will be turned ON.
4. Protection Circuit of Active Filter
In order to prevent from the destruction of Active Filter due to the excessive over output voltage of Active Filter, the Active Filter will be turned OFF
immediately at the abnormal output voltage by monitoring the output voltage. At the same time, the operation of compressor will be stopped. Detection circuit of the abnormal voltage detects the abnormal voltage by inputting the output voltage of Active Filter to the 4th pin of comparator IC (IC5) at
the divided voltage by the resistors (R31, R32 and R33) and comparing with reference voltage. When the output voltage of Active Filter reaches 450V
or higher, the 4th pin of IC5 will be higher than the reference voltage at the 5th pin, the output of comparator will be reversed (H→L), the L signal will
be entered at the 52nd. pin of microcomputer (IC1) and the operation of the Active Filter will be stopped.
18V
5V
R36
1M
IC1
52
3
2
12
4
+ 5
0V
R33
270KF
R35
34.8KF
R32
270KF
IC5
C57
0.1u
50V
R34
9.53KF
C56
0.1u
50V
0V
0V
2–5
R31
4.64KF
0V
DC
Voltage
AEX3M18JR
[4] EXPLANATION OF IPM DRIVE CIRCUIT
The power supply for the IPM drive, and the shunt resistor for over current detection, etc., are provided out of the IPM (in control PWB).
1. IPM drive power supply circuit
The power supply for driving the upper-phase IGBT (HU, HV, HW) drive employs a Bootstrap system.
The 15-V power supply for the lower-phase IC is provided by the control printed circuit board (PWB).
1. Brief explanation of Bootstrap system (single power drive system)
To supply power to the upper-phase IC, the microcomputer (IC1) turns ON the lower-phase IGBT (LU, LV, LW).
It results in a charging current that flows through the electrolytic capacitor in each upper-phase IC input and charges the Bootstrap capacitor up to
15V voltage.
The power supply for the subsequent stages is stored when the lower-phase IGBT is ON in common drive control of the compressor.
Initial charge period
P(Vcc)
Charging current group
Bootstrap capacitor
(HU,HV,HW)
HVIC
VDB
U,V,W,
High-voltage-withstanding,
high-speed recovery diode
N-side
IGBT
(LU,LV,LW)
VD
LVIC
VCIN(n)
N(GND)
Bootstrap circuit
2. DC over current detection circuit
When a current about 24A or higher flows through the shunt resistor (R100) on IPM printed circuit board (PWB), the voltage on this resistor is input to
IPM CIN pin (16). Then, the gate voltage of the lower-phase IGBT (LU, LV, LW) inside the IPM turns OFF to cut the over current off. At the same time,
an L output which lasts about 1.8 ms is generated from IPM Fo pin (18), and it results in an L level input to over current detection input pin (53) of the
microcomputer (IC1) and then turns OFF the compressor driving signal output (IC1 from pins (65) to (70)) to the IGBT gate.
SET
Protection circuit status
RESET
(Lower phase)
Internal IGBT gate
About 24A
SC
a1
Output current Ic (A)
SC reference voltage
Sense voltage relative
to shunt resistance
Delay by CR time constant circuit
About 1.8 ms
Error output Fo
2–6
AEX3M18JR
3. 120° energizing control (digital position detection control)
This control system detects the digital position detection signal and adjusts the rate of acceleration/deceleration accordingly. The motor's induced
voltage waveform is input to the comparator in the form of PWM-switched pulse, and a position detection signal is generated as a reference voltage
which is equal to 1/2 of 370 VDC. However, since there is no induced voltage waveform when the PWM waveform is OFF, the microcomputer works
in an internal processing so that detection is enabled only when it is ON. Based on the position signal detected, actual PWM waveform output timing
is determined. Since it does not use a filter circuit, the accuracy of detection. The microcomputer works in an internal processing to eliminate spiky
voltage during the regenerative process. Furthermore, even if the induced voltage is low, position detection is still possible, and it allows sensor-less
operation at low rotation speed in the initial stage of operation. These reduce the starting current and improve reliability of IPM.
Terminal voltage waveform
Reference voltage
(1/2 of DC voltage)
Spiky voltage
(cancelled)
Comparator output waveform
(Position signal waveform)
4. 180° energizing control
This is the control system to moderate the speed by the
current phase difference for higher efficiency and lower
noise of the compressor. The current phase difference
control is the control system paid attention to the interrelation between efficiency and phase gap generated by
the applied voltage of motor and current in the coil of
motor as shown in the figure below.
Motor voltage
Motor current
Efficiency
This control is the forced magnetization system independent of the location of rotor, detecting the phase difference between driving voltage phase and line current
phase flowing in motor coil, and controls the modulation
rate data to get the phase difference at the best efficiency.
Ტ
Best timing
Difference of current
and voltage peak
Ჷ(
Უ
Voltage /Current
phase difference
Concept chart of the current phase difference control
5. DC Current Detection Sensor Circuit
Control of current phase difference is made by reading in the phase difference generated at the both edges of shunt registor (R100) by the compressor electrifying current on the PWB through the Op-amp (IC9) to the microcomputer. This is a control to modulate up to the phase with the best efficiency by comparing the phase of this input current, so called compressor electrifying current, with the compressor driving voltage. In the case that
phase difference between motor voltage and current is large (current delay is large), the control will be made by lowering the compressor modulation
rate data (compressor effective value).
IPM
FUSE 101
250V 20A
P
S
FC1
C121
630v
0.33Ǵ
TU
TV
TW
R201
100KF
5V
N
CIN
C119
1000p
D8
15V
8
ZD101
R113 18KF
R100
0.02
Z
1
IC1
C96
1000P
R200
1K
C97
0.1μ
4
2
+ 3
IC9
Y
0V
Inverter current detection circuit
R
R202
20KF
R203
2.0KF
5V
R204
200KF
R205
200KF
0V
2–7
Y
Z
C
CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES
[1] PROTECTIVE FUNCTIONS AND OPERATIONS
NO.
Function
Operation
Detection time
Description
1
DC over current
2
AC over current
3
Compressor overheat prevention control
4
Compressor high
temperature error
5
Outdoor heat
exchanger overheat
prevention control
Compressor is stopped if a current approximately 24A or more flows in the power transistor module.
Lowers the operating frequency if the compressor AC current exceeds set value
(16.0A). Stops the compressor if the current
exceeds at minimum frequency.
Lowers the operating frequency if the temperature of the compressor thermistor (TH1)
rises above 108°C. Compressor is stopped if
the thermistor stay above 108°C for 2 minutes at minimum frequency.
Compressor is stopped if the compressor
thermistor is above 113°C (Or when TH1
shorts)
Lowers the operating frequency if the temperature of the outdoor heat exchanger rises
above 57°C during cooling. Stops the compressor if the temperature stays above 57°C
for 2 minutes at minimum frequency
Compressor ia stopped, if heat exchanger or
outdoor thermistor shorts. Close the expansion valve of the corresponding room, if
some suction thermistor shorts.
Compressor is stopped, if compressor or
heat exchanger or outdoor thermistor opens.
Close the expansion valve of the corresponding room, if some suction thermistor
shorts. opens.
Compressor is stopped, if the operating frequency is above 70Hz and the compressor
current is below 0.8A.
INDOOR
If open, while timer LED blinks, operation is
continued. If short, operation is continued.
OUTDOOR
Closes the expansion valve of the corresponding room if the outdoor unit does not
receive a serial signal from one or more
indoor unit for 30 seconds.
Compressor is stopped, if the outdoor unit
does not receive a serial signal from all
indoor units.
Restart condition
Restart
time
In
door
Out
door
During compressor operation
Automatically restarts
after safety time (180
seconds)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
No limit
No
No
During compressor operation
Automatically restarts
when thermistor (TH1)
temperature falls below
99°C (approximately 30
minutes)
4 times
Yes
Yes
During compressor operation
Automatically restarts
after safety time (180
seconds)
No limit
No
No
When the room
is activated turns
ON and the compressor starts.
Operation OFF
1 time
Yes
Yes
When the room
turns ON and the
compressor
starts.
Operation OFF
1 time
Yes
Yes
During compressor operation
Automatically restarts
after safety time.(180
sec.)
4 times
Yes
Yes
During operation
Automatically restarts
as soon as the serial
communication
becomes possible.
No limit
Yes
Yes
6
Thermistor short
7
Thermistor open
8
AC abnormal current
9
Serial signal error
10
Miswiring check
error
Compressor is stopped, and miswiring check
operation ends.
During miswiring
operation
Miswiring check operation will not restart
automatically.
4 times
Yes
Yes
11
Indoor heat
exchanger overheat
prevention control
Lowers the operating frequency if the temperature of any of indoor heat exchanger
rises high temperature during heating.
Stops the compressor if the temperature stay
high for 2 minutes at minimum frequency.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
No limit
No
No
Compressor stops if DC voltage is 450V or
higher.
During compressor operation
4 times
Yes
Yes
Compressor stops if DC voltage is 280V or
lower.
During compressor operation
4 times
Yes
Yes
12
13
Power factor module (Active Filter)
over voltage error
Power factor module (Active Filter)
low voltage error
3–1
Automatically restarts
after safety time.(180
sec.)
Automatically re-starts
after safety time.(180
sec.)
NO.
Function
Description
Operation
Detection time
Restart condition
Restart
time
In
door
Out
door
When power source frequency cannot be
determined (at startup) or when power
source clock can not be detected for 1 continuous second (at startup).
Operation stops if there is no input of rotation
pulse signal from outdoor unit fan motor for
30 seconds.
At compressor
start up, when in
operation.
Compressor continues
operation without stopping.
None
Yes
Yes
When outdoor
unit fan is in
operation.
Operation OFF or ON.
Yes ✩1
Yes
Yes
14
Power factor module (Active Filter)
clock error
15
Outdoor unit DC fan
error
16
DC compressor
rotation error
Operation stops if rotation of compressor is
abnormal.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
8 times
Yes
Yes
17
IPM overheat prevention control.
IPM high temperature error
The compressor stops if the temperature of
Heat sink exceeds 90°C.
During compressor operation
Automatically restarts
after safety time.(180
sec.)
No limit
No
No
18
Thermal fuse error
When thermal fuse in the outdoor terminal
board below.
Operation OFF
1 times
Yes
Yes
✩1 The outdoor unit restarts four times before the indoor unit error is displayed (complete shutdown).
[2] TROUBLESHOOTING GUIDE
1. SELF-DIAGNOS IS FUNCTION AND DISPLAY MODE
1) To call out the content of the self-diagnosis memory, hold down the emergency operation button for more than five seconds when the indoor unit is
not operating.
a) According to the content of the self-diagnosis memory, the Operation LED (main category) and the Plasmacluster Ion LEDs (sub-category)
flash in sync with the Timer LED on the indoor unit.
b) In the event a complete shutdown occurs due to a malfunction, the Operation LED (red), Timer LED (yellow), Plasmacluster Ion LED (blue)
flash to indicate the general information of the generated malfunction.
c) If the power cord is unplugged from the AC outlet or the circuit breaker is turned off, the self-diagnose is memory loses the stored data.
2) Display of detailed self-diagnosis result with main category and sub-category indications When malfunction information is called out, the main category and sub-category of the self-diagnose is result are indicated by the Operation, Timer, and Plasmacluster Ion LEDs on the indoor unit.
Main category
*1: Example of self-diagnosis result displayed on indoor unit: Suction thermistor open-circuit error
Basic flashing cycle due to error
Timer LED [yellow]
ON
OFF
Operation LED [red]
ON
OFF
1 sec 1 sec 1 sec
Malfunction No.
5 sec
Figures in ( ) indicate numbers (binary notation) assigned based on the flashing sequence.
Plasmacluster Ion LED [blue]
Flashing for main category indication
Flashing for sub-category indication
*2: The self-diagnosis display function of the outdoor unit indicates the error information by flashing LED1 on the
outdoor unit according to the content of self-diagnosis.
The self-diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self-diagnosis is
performed during operation, and the display returns to normal condition after this display period.
The content of self-diagnosis cannot be called out by the self-diagnosis display function of the outdoor unit.
Example of self-diagnosis display on outdoor unit : Compressor high-temperature abnormality
ON
OFF
0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec 0.5 sec
3–2
0.5 sec 0.5 sec 0.5 sec 0.5 sec
Sub-category
3–3
2 time
Indoor/outdoor units in
complete shutdown
8 time
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
7 time
Indoor/outdoor units in
complete shutdown
12 time
11 time
9 time
6 time
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
complete shutdown
5 time
1 time
Indoor/outdoor units
in complete shutdown
Indoor unit in operation
Outdoor unit in temporary
stop
Normal
flashing
Indication by
LED1 on
outdoor unit
*2
Indoor/outdoor units in
operation
Status of
indoor/outdoor
units
Floor / ceiling
for 5 seconds
-4
-5
Operation lamp(RED)
Cluster lamp(BLUE)
11 -0
12 -0
Operation lamp(RED)
Cluster lamp(BLUE)
9 -4
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
8 -0
-2
-3
-1
7 -0
-1
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
6 -0
-2
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
-1
5 -0
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
-2
-3
-1
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
2 -0
-1
-2
-3
0 -0
1 -0
Main Sub
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
X
Lighting pattern at the time of timer lamp lighting
Wall
(Panel)
Temporary stop due to out door unit
heat exchanger overheat.
Temporary stop due to indoor unit
heat exchanger overheat.
IPM high temperature error
Temporary stop due to compressor
discharge overheat.
Suction thermistor open circuit error
Compressor high temperature error
Thermistor Unit A - C thermistor
short circuit error
(1)Check to make sure outdoor unit thermistor TH2 (exchange) and TH3 (pipe (1)Correct the installation.
temperature) are installed in correct portions.
(2)Check if the refigerant volume is abnomally low.
(2)Change the speccified amount of refrigerant.
(3)Check the 4-way valve for proper operation.
(3)Replace the 4-way valve.
4 way valve error
or Gas leak error
Outdoor unit DC fan rotation error
Cycle
temperature
Outdoor unit
DC Fan
Thermal fuse error in terminal board
Thermal fuse
in terminal board (for power supply)
(1)Check the thermal fuse in terminal board (for Power supply)
(2)Check connector CN5 of the outdoor unit.
(1)Replace terminal board for Power supply
(2)Replace the outdoor unit control PCB assembly.
(1)Correct the installation.
(2)Replace the outdoor unit fan motor.
(3)Replace the outdoor unit control PCB assembly.
(4)Replace the outdoor unit control PCB assembly.
(1)Replace the outdoor control board assembly.
(2)Reattach
(3)Check the wiring between units.
(1)Check connector CN3 of the outdoor unit DC fan motor for secure installation.
(2)Check the outdoor unit fan motor for proper rotation.
(3)Check fuse FUSE5.
(4)Outdoor unit control PCB
(3)Correct refrigerant clogs. (Stop valve,pipe,expansion valve)
(1)Check the expansion valve. (unit A - C)
(2)Are four expansion valves connected by mistake
(3)Check the wiring between units.
Abnormal wire check error
Abnormal wire
check
(1)Replace the outdoor unit control PCB assembly.
(2)Charge the specified amount of refrigerant.
(1)Replace the outdoor unit control PCB assembly.
(2)Charge the specified amount of refrigerant.
(3)Correct refrigerant clogs. (Stop valve,pipe,expansion valve)
AC current deficiency error
AC maximum current error
AC current error when OFF
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Replace the outdoor unit IPM PWB assembly.
(1)Replace the outdoor unit IPM PCB assembly.
(2)Correct the installation (tighten the screws). Apply silicon grease.
(3)Replace the outdoor unit fan motor.
(4)Replace the outdoor unit IPM PCB assembly.
(5)Replace the compressor.
(4)Replace the outdoor unit control PCB assembly.
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Check the outdoor unit fan motor.
(1)Check the IPM is attached correcity to the outdoor unit IPM PWB.
(1)IPM continuity check.
(2)Check the IPM and heat sink for secure installation.
(3)Check the outdoor unit fan motor for proper rotation.
(4)No abnormality found in above inspections (1)through (3).
(5)No abnormality found in above inspections (1)through (4).
_
(2)Replace the outdoor unit thermistor assembly.
(3)Replace the outdoor unit thermistor assembly.
(1)Correct the installation.
(1)Change the heat-sink thermistor.
_
_
(1)Ensure unobstructed air flow from the outdoor unit air outlet.
(2)Connect power supply of proper voltage.
(3)Charge the specified amount of refrigerant.
(4)Replace the outdoor unit compressor thermistor assembly.
(5)Replace the expansion valve coil,expansion valve or outdoor unit
control PCB assembly.
(1)Replace the outdoor IPM PWB
AC overcurrent error
IPM pin level error
DC overcurrent error
Thermistor Unit A - C thermistor open
circuit error
Discharge thermistor open circuit error
(1)Check connector CN8A and CN8C of the outdoor unit thermistor for
secure installation.
(2)Measure resistance of outdoor thermistors TH1 ~ 4, 6 ~ 8.
(3)Check the lead wires of thermistors TH1 ~ 4, 6 ~ 8 on the outdoor unit
control PCB for open-circuit.
(4)No abnormality found in above inspections (1)through (3).
(1)Measure resistance of the heat-sink thermistor (CN8B).
(Temporary stop for cycle protection)
(Temporary stop for cycle protection)
(1)Check the outdoor unit air outlet for blockage.
(2)Check if the power supply voltage is AC 230V at full power.
(3)Check the pipe connections for refrigerant leaks.
(4)Measure resistance of the outdoor unit compressor thermistor.
(TH1:Approx.53k at 25ºC)
(5)Check the expansion valve for proper operation.
(Temporary stop for cycle protection)
(3)Replace the outdoor unit control PCB assembly.
(2)Replace the outdoor unit thermistor assembly.
(1)Replace the outdoor unit thermistor assembly.
_
Remedy
(1)IPM continuity check
Outdoor unit
AC Current
Outdoor unit
DC Current
_
Inspection location/method
Heat exchanger thermistor short circuit (1)Measure resistance of the outdoor unit thermistors.
(TH2 ~ 4, 6 ~ 8: Approx.4.4k at 25ºC
error
(2)Check the lead wire of the outdoor unit thermistor for torn sheath and
Outdoor temperature thermistor
shortcircuit.
short circuit error
(3)No abnormality found in above inspections (1)and (2).
Suction thermistor short circuit error
Heat exchanger thermistor open
Outdoor unit
circuit error
thermistor opencircuit
Outdoor temperature thermistor open
circuit error
Suction thermistor open circuit error
Cycle
temperature
Outdoor unit
thermistor
short-circuit
Normal
Sub category
Content of diagnosis
Main category
: Flashes 3 times in 0.2-sec intervals
Indication on indoor unit
Flashes in 1-sec intervals (normal) : 1sec ON / 1sec OFF X : : OFF
3–4
X
X
X
Indoor/outdoor units in
complete shutdown
Indoor/outdoor units in
operation
Indoor/outdoor units in
operation
Indoor unit in operation
Outdoor unit in
complete shutdown
X
14 time
Indoor/outdoor units in
complete shutdown
Indoor unit in operation
Outdoor unit in
complete shutdown
13 time
Indication by
LED1 on
outdoor unit
*2
Indoor/outdoor units in
complete shutdown
Status of
indoor/outdoor
units
Floor / ceiling
for 5 seconds
Main category
Sub category
Operation lamp(RED)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Cluster lamp(BLUE)
Drain pump unit Drain pump unit error
30 -0
EEPROM data error
Indoor unit
control PCB
20 -0
Indoor unit fan error
Serial erroneous wiring
Serial short-circuit
Erroneous wiring
Serial open-circuit
Indoor unit fan
Wires between
units
Wires between
units
19 -0
-1
18 -0
17 -0
low valtage error
-4
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Clock error
Active Filter overvoltage error
-1
Active Filter
Operation lamp(RED)
Cluster lamp(BLUE)
Outdoor unit
Detection error of inverter current.
Compressor rotation error
(at 180º energizing)
Compressor rotation error.
(at 120º energizing)
DC compressor Compressor startup error
14 -0
-1
-2
-3
13 -0
Main Sub
Content of diagnosis
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
Operation lamp(RED)
Cluster lamp(BLUE)
X
Lighting pattern at the time of timer lamp lighting
Wall
(Panel)
: Flashes 3 times in 0.2-sec intervals
Indication on indoor unit
Flashes in 1-sec intervals (normal) : 1sec ON / 1sec OFF X : : OFF
(1)Check connector CN2 and CN10.
(EEPROM read data error)
(1)Check the indoor fan motor for proper rotating operation. (Check fan lock.)
(2)Check the lead wire of the indoor fan motor for open-circuit.
(3)Check connector of the indoor unit fan motor for secure installation.
(4)No abnormality found in above inspections (1)through (3).
(1)Check the wires between units.
(1)Check the wires between units.
(1)Correct the wiring.
(2)Replace the fuse/outdoor unit control PCB assembly.
(3)Replace the outdoor unit control PCB assembly.
(1)Check the wires between units.
(2)Check the outdoor unit fuse.
(3)Check 15-V,13-V and 5-V voltages on the PCB.
Check resistance between IPM terminals.
(4)Check pins No.5 and 8 of connector CN3 of the outdoor unit fan motor
for short-circuit.
(5)Outdoor unit control PCB.
(1)Replace the Drain pump unit unit.
(2)Re-insertion of CN2 and CN10.
(1)Replace the indoor unit control PCB.
(1)Replace the indoor fan motor.
(2)Replace the indoor fan motor.
(3)Correct the installation of CN3 of the indoor fan motor.
(4)Replace the indoor unit control PCB.
(1)Correct the wiring.
(1)Correct the wiring.
(5)Replace the outdoor unit control PCB board.
(4)Replace the outdoor unit fan motor.
(1)Connect stable power supply.
(2)Replace the outdoor unit control PCB assembly.
(2)Replace tfe outdoor unit control PCB assembly.
(1)Conect stable power supply.
(1)Check the wires between units.
(2)Check voltage between N and 1 the indoor/outdoor unit terminal boards.
(1)Check the AC power supply valtage for fluntuation.
(1)Replace the outdoor unit control PCB assembly.
(1)Connect stable power supply.
(2)Replace the outdoor unit control PCB assembly.
(1)Check the clock for proper inputt.
(1)Replace the outdoor unit control PCB assembly.
(1)Check the AC power supply voltage for fluctuation.
(2)No abnormality found in above inspection (1).
(3)Replace the Active Filter.
(4)Replace the outdoor unit control PWB assembly.
(5)Replace the compressor.
(2)Replace the outdoor unit control PWB assembly.
(3)Replace the outdoor unit control PWB assembly.
(1)Correct the installation. (U:Red,V:White,W:Orange)
Remedy
(1)Check the circuit of detection of inverter current.
(1)Check the colors (red,white,orange)of the compressor cords for proper
connection. (PWB side, compressor side)
(2)Check if the IPM terminal resistance values are uniform.
(3)Check if outdoor main relay (MRY1) turns on and voltage of both end of
the condenser (C10) has become DC380V.
(4)No abnormality found in above inspections(1)and(3).
(5)No abnormality found in above inspections(1)and(4).
Inspection location/method
CHECK METHOD
CAUTION: CHECKING PRINTED CIRCUIT BOARDS (PWB)
Non-insulated control circuit
Do not touch the
cabinet or bring metal
parts into contact with
the cabinet.
The GND terminals of the low-voltage circuits (control circuits for
microcomputer and thermistors and drive circuits for expansion valve
and relays) on the control printed circuit board (PWB) are connected
to the compressor drive power supply (370-VDC negative terminal).
Therefore, exercise most caution to prevent electric shock.
Danger!!
Do not connect
the grounding
wire.
If a measuring instrument used for the test is grounded, its chassis
(ground) has the same electric potential as the 0-V probe. Since noninsulated circuits have the following voltage potential difference from
the ground, connection of the grounding wire results in a short-circuit
between the 0-V line and the ground, thus allowing an excessive current to flow to the tester to cause damage.
If the sheaths of the thermistor lead wires or expansion valve lead
wires inside the outdoor unit become damaged due to pinching by the
front panel or other metal parts or contacting a pipe, a high voltage can
flow and destroy the circuits. To prevent these problems, carefully conduct assembly work.
Reason
The oscilloscope (chassis ground) has the same electric potential as the 0-V probe. The entire electronic control section of the outdoor
unit has a voltage potential difference from the ground. When the oscilloscope is setup, the 0-V line and the ground voltage (ground) will
be short circuited, resulting in an excessive current flow to cause damage to the oscilloscope or indoor electric circuits.
CAUTION: when attaching or removing the board
When operating only the outdoor unit (cooling 48.3 Hz fixed mode) to make the outdoor unit run in cooling mode, apply a voltage of 220 ~
240V AC to L and N on the terminal board and push the pump down switch (SW1). (Avoid operating the outdoor unit alone for long periods
of time.)
(D)
0
(D)
Figure 2 Temperature properties of outdoor thermistors
TH2 : Heat exchanger pipe thermistor (CN8A 3 - 4 )
TH3 : Outdoor temp. thermistor (CN8A 5 - 6 )
TH4 : Suction thermistor (CN8A 7 - 8 )
TH6 : Thermistor unit A (CN8C 1 - 2 )
TH7 : Thermistor unit B (CN8C 3 - 4 )
TH8 : Thermistor unit C (CN8C 5 - 6 )
1
1
8
Connector
CN8A
6
Connector
CN8C
500k
40k
Resistance (
Resistance (
)
)
TH1 compressor thermistor
(CN8A 1 - 2 )
400k
25ºC resistance
45 k
300k
200k
5.78k
3.06k
4.17k 2.28k
1.72k
100k
0
20
60
20k
10k
0
-20
0ºC resistance
14.5 k
25ºC resistance
4.431 k
TH2 - TH4
TH6 - TH8
30k
0
80 100 120
-20
Temperature (ºC)
0
20
40
Temperature (ºC)
3–5
60
To measure the resistance, first remove the connector from the board.
Thermistor
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temp. thermistor
Suction thermistor
Thermistor unit A (suction)
Thermistor unit B (suction)
Thermistor unit C (suction)
No.
TH1
TH2
TH3
TH4
TH6
TH7
TH8
Connector
CN8A
CN8A
CN8A
CN8A
CN8C
CN8C
CN8C
Color
Red
Orange
Green
Black
Blue
White
Brown
Connector pin
No. 1 to 2
No. 3 to 4
No. 5 to 6
No. 7 to 8
No. 1 to 2
No. 3 to 4
No. 5 to 6
Figure 3 Temperature properties of heatsink thermistor
500
Resistance (k )
400
Thermistor
Signal
Color
Heatsink
CN8B
Black
To measure the resistance, first remove
the connector as shown at right.
300
1
3
Heatsink thermistor
TH5 (black)
25ºC resistance 50k
200
6.14k
100
Tester
3.25k
12.3k
0
-20
0
20
40
60
Temperature (ºC)
80
100
2. How to distinguish the defective parts
1. When all rooms are not cooled
Are the timer lamps of the indoor units in all rooms flashing ?
Yes
No
Press the OPERATION button
to start operating the air-conditioner. (One-room operation ON)
(Set the cooling mode to 18ºC)
Yes
Is the compressor of the outdoor
unit operating ?
No
The cooling cycle is abnormal.
Are the timer lamps of the indoor
units in all rooms flashing ?
Yes
Check the failure symptom with
the failure diagnosis mode.
No
Check the pressure.
Check that the power between
the terminal board " N " and " 1 "
of the indoor unit is AC 230V,
50Hz.
Repair the wiring between the
units.
3–6
TO
A
(Check the failure with
the outdoor unit.)
3–7
Replace the
thermistor.
No
Is the resistance
value of the thermistor for the compressor (TH1), heat Yes
ex-changer (TH2)
or outdoor temperature (TH3) or suction (TH4, TH6-8)
correct?
Open circuit of the
outdoor thermistor
A
No
Check the voltage
(15V).
No
AC overcurrent
No
Yes
Replace the fan motor.
Yes
Connect CN3
Inspect the compressor, heat exchanger
and piping.
The cycle is abnormal.
Yes
Is the resistance value
between 5 and 8
of fan motor 0?
Check the FUSE 5
Yes
Is CN3 connected ?
No
Is the outdoor fan
motor operating ?
Overheat of the compressor
Replace the Compressor.
The compressor is abnormal.
Replace the IPM PWB
Yes
Power module PWB
(IPM) abnormality
Replace the IPM PWB.
Yes
No
Connect CN6.
Check the voltage (5V).
Replace the current
transformer
Yes
Is CN6 connected ?
Yes
Are 3 LEDs
switched off ?
Open circuit of serial signal line
Short circuit of serial signal line
Is the resistance value of the No
winding in the current transformer (CT1) ? (720)
Fix the IPM PWB with
screws securely.
Yes
Replace the outdoor control PWB.
No
Abnormal AC current
Is the winding of the current
transformer (CT1) broken ?
Is each of the resistance values among
the terminals of the
Yes
IPM PWB 0 ?
P - U, N - U
P - V, N - V
P - W, N - W
No
Is the IPM PWB in a
state of floating from
the heat sink ?
Connect CN16
No
Is each of the resistance
values among the terminals of the IPM PWB 0 ?
P - U, N - U
No
P - V, N - V
P - W, N - W
Check the voltage
(15V).
Yes
No
Is CN16 connected ?
Rotation error of
the compressor
Fix the Power factor
module with screws
secuerly
Yes
No
Replace the Power
factor module (AF1)
Is the resistance value among Yes
the terminal of the Power factor module (AF1) 0 ?
No
Is the Power factor module in a
state of flaoting from the heatsink?
Power factor module (AF1) error
2. When one room is not cooled (other rooms are cooled)
Is the timer lamp of the
indoor unit in the room
not cooled flashing ?
Yes
No
Press the OPERATION
button to start operating
the air-conditioner.
(Set the cooling mode
to 18ºC.)
Yes
Is the timer lamp of the
indoor unit in the room
not cooled flashing ?
Check the failure
symptom with the failure
diagnosis mode.
No
No
Check that the power
between the terminal
board "N" and "1" of the
indoor unit is AC 230V.
Short circuit of the thermistor error
Open circuit of the thermistor error
Is the resistance value of the thermistor for UNIT A (TH6), UNIT B Yes
(TH7) or UNIT C (TH8)
Yes
Abnormal fan motor of
indoor unit
Open circuit of serial signal line
Short circuit of serial signal line
Is the resistance value of the No
winding in the fan motor ?
Is the wiring between the
units connected by mistake
or broken ?
No
Yes
Yes
Replace the indoor
control PWB.
No
Repair the wiring
between the units.
Repair the wiring between
the units.
Replace the indoor fan motor.
Replace the thermistor.
Replace the outdoor control PWB
or the expansion valve (UNIT A)
or the expansion valve (UNIT B)
or the expansion valve (UNIT C)
Replace the indoor control PWB.
3. When all rooms are not heated
Yes
Does the air get cooler in the cooling operation mode?
No
Press the ON switch on the remote control to run the air conditioner.
Set the temperature to 32ºC in the heating mode and start operation.
Refer to 1 All rooms are not cooled.
No
Is the outdoor compressor running?
Yes
No
Yes
Check the four-way valve. Has the cycle been switched?
To A
No
The heating cycle is normal.
Is AC230V applied between the connector
(CN4) 1 and 3 of the 4-way valve ?
Pressure check
No
Yes
Replace the 4-way valve.
Replace the outdoor control P.W.B..
3–8
AEX3M18JR
CHAPTER 4. REFRIGERATION CYCLE
AEX3M18JR
Service Manual
[1] REFRIGERATION SYCLE
(1)
Expansion valve B
Heat exchanger
Expansion valve A
UNIT A
(3)
(4)
(2)
Heat exchanger
UNIT B
(3)
STOP valve (Liquid)
4-way valve
(3)
Expansion valve C
Heat exchanger
Accumulator Compressor
UNIT C
Heat exchanger
STOP valve (Gas)
OUTDOOR UNIT
INDOOR UNIT
Refrigeration Cycle
UNIT C
UNIT B
UNIT A
INDOOR UNIT
OUTDOOR UNIT
Cooling
heating
Flow of Refrigerant
1. Cycle temperature and pressure in stop valve
Running unit
AY-XPM7FR &
AY-XPM7FR &
AY-XPM7FR
(3 units)
AY-XPM12FR
(1 unit)
No
(1)
(2)
(3)
(4)
Stop valve pressure (gas side)
Frequency
(1)
(2)
(3)
(4)
Stop valve pressure Frequency
Frequency
Cool (MAX)
86
45
12
15
1.04MPa(abs)
100Hz
80
38
10
11
0.88MPa (abs)
70Hz
4–1
Operation Mode
Cool (Test run)
Heat (MAX)
70
78
41
-1
15
35
19
0
1.21MPa(abs)
2.53MPa(abs)
70Hz
120Hz
67
89
37
1
13
42
17
2
1.10MPa (abs)
3.52MPa (abs)
40Hz
90Hz
Heat (Test run)
50
2
27
3
1.97MPa(abs)
50Hz
59
3
25
6
2.38MPa (abs)
40Hz
AEX3M18JR
Running unit
No
Cool (MAX)
74
37
10
13
0.96MPa (abs)
50Hz
69
37
11
15
1.02MPa (abs)
40Hz
(1)
(2)
(3)
(4)
Stop valve pressure Frequency
Frequency
(1)
(2)
(3)
(4)
Stop valve pressure Frequency
Frequency
AY-XPM9FR
(1 unit)
AY-XPM7FR
(1 unit)
Operation Mode
Cool (Test run)
Heat (MAX)
63
82
38
2
14
38
19
4
1.17.MPa (abs)
3.20MPa (abs)
30Hz
70Hz
62
73
37
3
14
33
20
5
1.17MPa (abs)
3.00MPa (abs)
20Hz
55Hz
Heat (Test run)
53
4
26
7
30MPa (abs)
20Hz
50
4
27
7
2.00MPa (abs)
25Hz
Standard conditions
Indoor side
Dry-bulb temp. (°C)
Relative humidity (%)
27
47
20
–
Cooling
Heating
Outdoor side
Dry-bulb temp. (°C)
Relative humidly (%)
35
40
7
87
2. PERFORMANCE CURVES
NOTE: Total cooling capacity and total input with 3 units running.
(Running frequency: 110HZ)
1800
Input(W)
(Running frequency: 105HZ)
1600
1400
38
1000
17
1000
16
14
13
36
34
32
30
Heatingcapacity(kW)
1200
6.0
5.5
5.0
4.5
24
Outlet air temp. (ºC)
1200
15
Coolingcapacity(kW)
1600
1400
Outlet air temp. (ºC)
Input(W)
1800
8.0
28
7.0
26
6.0
24
5.0
-6
-4
-2
0
2
4
6
8
10
12
Outside air temp. (ºC)
26
28
30
32
34
36
38
40
42
44
At Heating for AY-XPM7FR (for AE-X3M18JR)
Outside air temp. (ºC)
At Cooling for AY-XPM7FR (for AE-X3M18JR)
[2] REFRIGERANT PIPE INSTALLATION WORKS
1. Piping
Max. piping length A ------------------ 25m
2. Air-removing
Use an adapter for preventing vacuum pump oil from flowing back to
the gauge manifold hose. ON/OFF operation of the vacuum pump
should be made by the adapter switch.
INDOOR UNIT
Min. piping length A ------------------ 3m
Max. total piping length of all unit --- 50m
2) Remove the service port cap of the stop valve (gas side).
Max. level difference B -------------- 10m
•
•
If total piping length exceeds 30m,
add 15g of refrigerant per 1m.
When the outdoor unit is placed at a
higher level than the indoor units, provide a trap near the hose’s lead-in
port.
1) Remove both valve shaft caps of the stop valves.
A
OUTDOOR
UNIT
3) Connect the gauge manifold hose to the service port and the vacuum pump. Be sure that the hose end to be connected to the service port has a valve core pusher.
B
4) Open the gauge manifold valve and operate the vacuum pump for
10-15 minutes. Make sure the compound gauge reads -0.1MPa (76cmHg).
B
5) Close the gauge manifold valve.
6) Turn off the vacuum pump.
7) Fully open the stop valve (liquid side) with hexagon socket screw
key. Turn all the way up to contact.
TRAP
4–2
AEX3M18JR
CAUTION: Execute the pump down operation using with PUMP
DOWN SWITCH. The compressor might stop on the way if
pump down is operated while cooling operation mode without PUMP DOWN SWITCH.
8) Fully open the stop valve (gas side) with hexagon socket screw
key. Turn all the way up to contact.
9) Disconnect the gauge manifold hose from the service port.
10)Replace the service port cap and both valve shaft caps tightly. Turn
until the torque suddenly increases. Now tighten a 1/6-turn more.
NOTE: *
*
4. MISWIRING CHECK
Use a gauge manifold and hoses exclusive for R410A.
Miswiring check must be performed after installation, reinstallation and
service. This multi-type air conditioner is designed with a WIRE
CHECK SWITCH on the outdoor unit, and miswiring of unit-to-unit wiring will be self-corrected by microcomputer. Miswiring check may not
be performed when the outdoor temperature is below 5°C.
After air removal, check the tube connections for gas leak
using a leakage detector or soapy water. Regarding leakage detector, use high-sensitivity type designed specially
for R410A.
1) Complete the unit-to-unit wiring/piping and perform the air removing of the pipes. Turn the electrical circuit breaker ON. Before turning the circuit breaker ON, make sure no one is working on the
indoor units installation. Electrical shock or injury may occur.
Gauge manifold
Compound
gauge
Lo
Hi
2) Check that all LED (LED1, 2, 3) on the display board unit are flashing synchronously in a slow (one flash per second) cycle. If either
one or more of all LED is/are kept lighted on, check and correct the
Hose
Stop valve
(gas side)
Service port
Stop valve
(liquid side)
wrong wirings among,
N, 1, 2, terminals so that all LED will flash
slowly, showing normal condition.
Vacuume pump adapter
Service port
3) Press the WIRE CHECK SWITCH (SW2) on the display board unit
for 5 seconds or more. The flashing of all LED will change. Mis-wiring (mis-piping) check will start and the indoor and outdoor units
will start operating. (The red operation lamp on the indoor unit will
flash, and three BEEP will be emitted.) Miswiring of unit-to-unit wiring will be self-corrected.
Hexagon socket screw key
4mm
Valve shaft cap
OPEN
4) Wrong piping works cannot be corrected, and will be detected as
an error. When an error is detected during checking, all LED will
show triple flash for eight times. The indoor and outdoor operation
will stop. Turn the circuit breaker OFF and check and correct the
miswiring (mispiping)*. After correction, return to step 1 and repeat
the miswiring (mispiping) check again. If error is still detected, or
other types of LED signal should be indicated, please contact a service technician. (Refer to wiring diagram attached inside the outdoor unit cabinet for self diagnosis signal.)
3. Pump down
(Pump down is adopted in the case of unit removal for reinstallation,
abandonment, repair etc.) Pump down is to collect the refrigerant into
the outdoor unit by control of the stop valves and the compressor.
1) Turn the circuit breaker on.
2) Check that all LED (LED1, 2, 3) on the display board unit are flashing synchronously in a slow (one flash per second) cycle.
5) All LED (LED1, 2, 3) will flash synchronously in a slow (one flash
per second) cycle when miswiring (mispiping) check is completed
with no error detection (3–6 minutes), and the operation of indoor
and outdoor units will stop. (The red operation lamp flashing on the
indoor unit will go off.)
3) Stop the air conditioner operation.
4) Remove both valve shaft caps of the stop valves.
5) Press the PUMP DOWN SWITCH (SW1) on the display board unit
for 5 seconds or more. The indoor/outdoor unit will start operation
in the pump down mode. (the OPERATION lamp on the indoor unit
will flash and three BEEP will be emitted.)
6) Place the control box cover back in the reverse order.
*Correction points on error detection
6) After 5 – 10 minutes, fully close the stop valve (liquid side) by turning the hexagon socket screw key clockwise.
a) Are all piping the total multi air conditioner system connected?
b) Are the stop valves open?
PUMP DOWN
LED 3
UNIT C
SW 1
SW 2
WIRE CHECK
UNIT B
LED 2
UNIT A
LED 1
Stop valve
(gas side)
Stop valve
(liquid side)
4–3
SW 1
PUMP DOWN
SW 2
WIRE CHECK
LED 3
UNIT C
LED 1
NOTE: Wait more than 90 seconds after finishing pump down, and
turn off the circuit breaker off.
UNIT A
9) Replace the service port cap and both valve shaft caps tightly.
LED 2
8) Press the PUMP DOWN SWITCH (SW1) on the display board unit
for 5 seconds or more. The operation of indoor/outdoor unit will
stop.
UNIT B
7) After 2 – 3 minutes, immediately close the stop valve (gas side)
fully.
AEX3M18JR
Service
CHAPTER 5. DISASSEMBLING PROCEDURE
AEX3M18JR
Manual
[1] OUTDOOR UNIT
CAUTION: DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY SERVICING.
1. PROCEDURE
4. Remove the 4 screws fixing the fan guard then remove it and
remove the 7 screws fixing the cabinet then remove it.
1. Remove the 2 screws fixing the pipe cover then remove it.
3 screws are at the left.
2 screws are at the right.
1 screw is at the front.
1 screw is at the rear.
2. Remove the 3 screws fixing the control box cover then remove it.
5. Remove the 3 screws fixing the control box angle then remove it.
CAUTION: DISCHARGE ELECTROLYTIC CAPACITOR BEFORE
TOUCHING THIS CAPACITOR OR OTHER COMPONENTS OR WIRINGS.
3. Remove the 6 screws fixing the side cover R then remove it.
6. Cut the 2 wire fixing bands.
5–1
AEX3M18JR
7. Disconnect the 9 connectors.
10.Unfasten the nut fixing the propeller fan then remove it.
Expansion valve (CN12A, CN12B, CN12C): 3pcs.
Remove the 5 screws fixing the control box then remove it.
Thermistor (CN8A, CN8B, CN8C): 3pcs.
1 screw is at the right.
Fan motor (CN3): 1pc.
4 screws are at the front.
Reverse valve coil (CN4): 1pc
NOTE: How to disassemble of control box assembly is shown in step
15 - 25.
Display board unit (CN11): 1pc
NOTE: Caution to connectors position especially the expansion
valves, when reinstalling
11. Remove the 2 screws fixing the fan motor angle assembly then
remove it with lifting up as unhook the hook on the base pan.
8. Remove the compressor cover B.
Disconnect 5 terminals.
Remove the 3 screws fixing the fan bulkhead assembly then
remove.
Coil for PFC1 (L1): 2pcs (White)
Compressor: 3pcs (Red, White and Orange)
NOTE: Caution to connectors position especially the compressor,
when reinstalling.
12.Remove the 4 screws fixing the fan motor then remove it.
9. Remove the 13 screws fixing the rear cabinet then remove it.
1 screw is at the left.
5 screws are at the right.
7 screws are at the rear.
5–2
AEX3M18JR
13.Remove the 3 screws fixing the coil for PFC then remove it
How to disassemble the control box assembly
NOTE: When the coil re-install, silicone grease must be paste to the
back face of the coil.
16.Cut the 3 wire fixing bands.
Disconnect the 7 connectors. [CN6, CN15, CN9A, CN16, CN17,
CN5, CN101 (IPM)]
14.Remove the 3 strings on the compressor cover A then remove it
Lift up the Control Board Unit (PWB) and remove it.
Control board unit
15.Remove the 6 thermistors on copper tube.
Install this SHAORT-CIRCUIT CONNECTOR in a new
CONTROL PWB at CONTROL PWB exchange.
NOTE: Caution to position when re-installing.
17.Disconnect the 2 terminals (Blue and Brown).
And Remove the 3 screws fixing the terminal board angle assembly
then turn it inside out.
TH8 (BROWN)
(Just on the tilted pipe)
TH7 (WHITE)
(Just on the horizontal pipe)
TH6 (BLUE)
Blue
(Just on the horizontal pipe)
TH3 (GREEN)
TH4 (BLACK)
TH2 (ORANGE)
Refer to page 5-5 (Mounting position of thermistors and expansion
valves)
5–3
Brown
AEX3M18JR
21.Remove the 2 screws fixing the heat sink cover then remove it.
18.Disconnect the 5 terminals (T1, 2, 4, 6, MRY1) and 3 connectors
(CN14, CN2, CN13 (Active Filter)).
22.Cut a wire fixing board.
19.Remove the 3 screws fixing the power supply board unit (PWB).
23.Remove the each of 4 screws fixing the heat sink.
NOTE: Confirm two kinds of spacer put in 4 holes have clung.
Seal the 4 burring holes with silicone sealer before reinstalling.
20.Disconnect 2 connectors (CN1,CN9). Then lift up the relay board
unit (PWB) and remove it.
24.Disconnect the 5 terminals (TP, TU, TV. TW, TN) and 1 connector
(CN114) on the IPM PWB. And Remove the 2 screws fixing the
IPM PWB and remove it.
NOTE: When the IPM PWB re-install, silicone grease must be paste
to the back face of the IPM.
5–4
AEX3M18JR
Active filter
or
Power transistor
module(IPM)
25.Disconnect the 6 terminals (P, Io, +, -, L1, L2) and 1 connector
(CN13) on the active filter. And Remove the 2 screws fixing the
power module and remove it.
OK
NG
CAUTION: Fix the connector of the power module securely.
NOTE: When the active filter re-install, silicone grease must be paste
to the back face of the Active Filter.
2. Mounting position of thermistors and expansion valves
Mounting position of thermistors and expansion valves are shown below.
Thermistor
•
Check the cord color of thermistor before mounting.
•
Thermistor Suction, Suction A, Suction B, Suction C are mounted on GAS side pipes.
•
Thermistor Heat exchanger is mounted on LIQUID side pipe.
Expansion valve
•
Check the labels before connecting to the Control Board Unit.
Thermistor Suction (Black)
Label
Expansion valve C
Thermistor Suction C (Brown)
Label
Expansion valve B
Thermistor Suction B (White)
Label
Expansion valve A
Suction A
Suction B
Suction C
Suction
Outdoor temp.
Heat
exchanger
Compressor
Thermistor Suction A (Blue)
Thermistor Heat exchanger (Orange)
Thermistor
C
B
Connector label
CAUTION: Mismounting and misconnecting will cause error or failure.
5–5
A
Expansion valve
AEX3M18JR
MEMO
5–6
AEX3M18JR
PartsGuide
PARTS LIST
MULITI SPLIT TYPE
ROOM AIR CONDITIONERS
(OUTDOOR UNIT)
MODEL
AE-3XM18JR
CONTENTS
[1]
OUTDOOR UNIT
[4]
PACKING PARTS
[2]
CONTROL BOARD UNIT PARTS
„
INDEX
[3]
IPM30A BOARD PARTS
HOW TO ORDER REPLACEMENT PARTS
To have your order filled promptly and correctly, please
furnish the following information.
1. MODEL NUMBER
2. REF. NO.
3. PART NO.
4. DESCRIPTION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
AEX3M18JR
[1] OUTDOOR UNIT
2-21
6-6
2-2
2-20
1-30
4-5
4-2
1-36
4-4
4-6
4-3
2-14
6-11
4-1
2-15
6-12
2-17
2-11
2-23
2-99
6-6
2-7
1-18
1-51
2-2
2-2
2-13
2-46
6-5
2-3
2-16
2-9
2-85
2-65
2-9
2-12
2-93
6-5
6-2
2-18
6-13
6-9
2-62
1-34
1-44
2-63 2-4
2-27
2-19 2-6
2-5
2-8
1-43
2-10 2-84
2-83
6-11
2-2
2-22
6-5
2-1
6-5
2-26
6-10
2-98
6-13
1-10
1-67
1-37
1-38
1-69
1-40
6-5
1-47
1-3
1-48
1-71
1-62
1-76
6-5
1-49
2-67
1-12
3-15
1-45
1-39
6-5
6-4
1-11
1-6
6-5
1-8
1-65
1-53
1-72
6-5
1-42
2-28
1-41
3-16
1-9
6-14
6-4
1-73
1-50
3-8
1-34
6-1
2-80
1-15
1-31
1-17
1-2
6-5
1-25
1-26
1-21
1-16
2-66
1-13
1-4
6-7
3-7
1-5
1-77
6-4
1-22
3-20 1-27
3-18
6-13
1-35
6-13
6-3
1-68
1-58
1-64
1-7
6-13
6-13
1-63
6-13
1-1
6-13
1-61
3-3
3-12
3-13
3-10
3-9
3-10
1-57
3-2
3-6
6-13
3-9
3-4
1-19
1-20
6-3
1-66
6-5
1-16
3-5
6-13
1-24
1-23
1-55
1-46
3-21
1-54
3-11
2-67
3-19 3-1
3-14
3-17
6-8
1-32
6-13
1-52
1-14
1-59
1-60
6-5
1-56
1-28
6-13
6-13
2
AEX3M18JR
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[1] OUTDOOR UNIT
CABINET AND UNIT PARTS
1-1 CCHS-A789JBTB
1-2 CMOTLB051JBEZ
1-3 DCAB-A126JBTB
1-4 FCOV-A330JBWZ
1-5 GCAB-A366JBTA
1-6 GFTA-A455JBTB
1-7 GGADFA042JBFA
1-8 GPLTMA059JBTB
1-9 LANGKA236JBPZ
1-10 LHLD-A574JBFA
1-11 LSUB-A024JBPZ
1-12 MSPR-A026JBE0
1-13 MSPR-A027JBE0
1-14 MSPR-A036JBE0
1-15 MSPR-A046JBE0
1-16 MSPR-A129JBE0
1-17 NFANPA108JBFA
1-18 PCOV-A578JBEZ
1-19 PCOV-A589JBEZ
1-20 PDAI-A136JBTB
1-21 PGUM-A115JBEZ
1-22 PGUM-A119JBEZ
1-23 PGUM-A120JBEZ
1-24 PGUM-A121JBEZ
1-25 PRDAFA163JBEZ
1-26 PGUMSA068JBE0
1-27 PGUMSA319JBEZ
1-28 PSEL-D235JBEZ
1-30 PSEL-B954JBEZ
1-31 PSEL-B956JBEZ
1-32 PSEL-B966JBEZ
1-34 PSEL-C011JBEZ
1-35 PSEL-C017JBEZ
1-36 PSEL-C019JBEZ
1-37 PSEL-C260JBEZ
1-38 PSEL-C261JBEZ
1-39 PSEL-C262JBEZ
1-40 PSEL-C277JBEZ
1-41 PSEL-C282JBEZ
1-42 PSEL-C343JBEZ
1-43 PSEL-C353JBEZ
1-44 PSEL-C354JBEZ
1-45 PSEL-C369JBEZ
1-46 PSEL-C370JBEZ
1-47 PSEL-C371JBEZ
1-48 PSEL-C372JBEZ
1-49 PSEL-C373JBEZ
1-50 PSKR-A244JBWZ
1-51 PSPA-A146JBE0
1-52 PSPF-A845JBEZ
1-53 PSPF-A846JBEZ
1-54 PTUB-A196JBEZ
1-55 RTRN-A294JBZZ
1-56 PCOV-B484JBFA
1-57 TLAB-B709JBRA
1-58 PFPFPD477JBEZ
1-59 PSEL-D236JBEZ
1-60 TLAB-C250JBRA
1-61 TLAB-C252JBRZ
1-62 TLAB-C773JBRZ
1-63 TLABBA146JBRA
1-64 TLABCC413JBRZ
1-65 TSPC-F913JBRZ
1-66 PSEL-C378JBEZ
1-67 PSEL-C379JBEZ
1-68 LSUB-A020JBWZ
1-69 PSEL-C382JBEZ
1-71 CFTA-A282JBKZ
1-72 PGUM-A141JBEZ
1-73 PSEL-C938JBEZ
1-76 TLAB-C511JBRA
1-77 TLAB-D315JBEZ
CONTROL BOX PARTS
2-1 DBOX-A039JBYZ
2-2 DSGY-C346JBKZ
2-3 LANG-A451JBWZ
2-4 LANG-A458JBWZ
2-5 LBNDKA154JBWZ
2-6 LHLD-0261JBM0
2-7 LPLTPA016JBFZ
2-8 LPLTPA017JBFZ
2-9 LPLTPA018JBFZ
2-10 LPLTPA027JBFZ
2-11 PCOV-A601JBWZ
BD
BV
BE
AZ
BR
AP
BH
AF
AY
AE
AP
AB
AB
AB
AC
AD
BA
AE
AF
AP
AM
AG
AG
AE
AP
AD
AF
AG
AF
AF
AC
AC
AC
AD
AC
AC
AC
AG
AD
AE
AP
AE
AC
AC
AC
AC
AC
AR
AC
AS
AH
AK
BG
AG
AH
AG
AG
AG
AK
AN
AN
AG
AG
AB
AB
AE
AC
AW
AG
AK
AC
AG
Base pan assembly
Fan motor
Rear cabinet assembly
Coil cover assembly
Cabinet
Control box cover
Fan guard
Side cover R
Motor angle
Thermistor holder
Motor angle sub
Spring
Thermistor spring
Thermistor spring
Protector spring
Cycle spring
Propeller fan
Sw board cover
Cover
Flare coupling base
Damper rubber
Valve rubber
Valve rubber
Damper rubber
Heat sink
Damper rubber
Damper rubber
INSULATOR
Bulkhead insulator
Bulkhead seal
Bulkhead seal
Insulator
Cabinet seal
Insulator
Seal A
Seal B
Seal C
Cover insulator
Cushion
Bulkhead insulator A
Insulator
Insulator
Accum.cushion
Insulator
Seal
Seal
Seal
Bulkhead
Spacer
Compressor cover A
Compressor cover B
Pipe insulator
Active coil (L1)
TUBE COVER
Label
INSULATOR
INSULATOR
Unit label
Service label
Label
Badge
Wiring diagram
Name label
Insulator
Insulator
Flare cup.sub-S
Seal D
Control cover assembly
Rubber
Insulator
Label
EU energy label
AW
CD
AE
AR
AN
AB
AG
AG
AG
AN
AQ
Cont.box spot assembly
Control board unit
Cont.box angle
Terminal board ang.
Capacitor band
Cord holder
Pwb support A
Pwb support B
Heatsink support
Pwb support C
Heatsink cover
3
AEX3M18JR
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[1] OUTDOOR UNIT
2-12 PSEL-C376JBEZ
2-13 PRDAFA215JBEZ
2-14 PRDAFA216JBEZ
2-15 PSEL-C037JBEZ
2-16 PSEL-C074JBEZ
2-17 PSEL-C374JBEZ
2-18 PSHE-A195JBEZ
2-19 PSHE-A196JBEZ
2-20 PSPA-A064JBE0
2-21 PSPA-A065JBE0
2-22 PSPA-A150JBZZ
2-23 DSGY-C347JBKZ
2-26 QTANZA021JBZZ
2-27 QTANZA044JBZZ
2-28 QW-IZA120JBZZ
2-46 PSHE-A273JBEZ
2-62 RC-AZA046JBE0
2-63 RC-EZA250JBZZ
2-65 VHDD25VB60+-1
2-66 RH-HXA094JBZZ
2-67 RH-HXA095JBZZ
2-80 RTHM-A022JBE0
2-83 TLAB-B777JBRZ
2-84 TLAB-D245JBRZ
2-85 TLAB-D244JBRZ
2-93 RH-TXA008JBZZ
2-98 PSEL-C377JBEZ
2-99 RHOG-A169JBE0
CYCLE PARTS
3-1 CCIL-A133JBEZ
3-2 DVLV-A455JBKZ
3-3 DVLV-A460JBKZ
3-4 DVLV-A536JBKZ
3-5 DVLV-A668JBKZ
3-6 DVLV-A669JBKZ
3-7 GLEG-A029JBE0
3-8 LBSHCA005JBE0
3-9 LX-NZA250JBEZ
3-10 LX-NZA251JBEZ
3-11 PACU-A049JBEZ
3-12 PCAP-A083JBEZ
3-13 PCAP-A084JBEZ
3-14 PCMPRA524JBEZ
3-15 PCON-A490JBPZ
3-16 PCOV-0562JBE0
3-17 PMUF-A081JBEZ
3-18 PVLVRA040JBEZ
3-19 PVLVXA081JBEZ
3-20 RMOTSA031JBZZ
3-21 FCMPRA244JBKZ
ACCESORY PARTS
4-1 LHLD-A459JBEZ
4-2 LPFT-A029JBF0
4-3 TINS-B119JBRZ
4-4 TINS-B120JBRZ
4-5 LBND-A046JBE0
4-6 TINS-B121JBRZ
SCREWS AND NUTS
6-1 LX-BZA268JBEZ
6-2 LX-BZA075JBE0
6-3 LX-BZA078JBEZ
6-4 LX-BZA351JBEZ
6-5 LX-BZA364JBEZ
6-6 LX-HZA007JBEZ
6-7 LX-NZA319JBEZ
6-8 LX-NZA313JBEZ
6-9 XBPS740P14JS0
6-10 XCTS740P10000
6-11 XBPS740P20J00
6-12 XBPS730P10000
6-13 LX-BZA140JBE0
6-14 LX-BZA363JBEZ
AC
BE
BC
AE
AC
AC
AH
AE
AA
AA
AF
BV
AN
AU
AU
AF
BE
BG
AN
BC
BC
AN
AC
AF
AM
BR
AC
AK
Insulator
Haet sink
Heat sink
Insulator
Insulator
Seal
Angle sheet
Cord holder sheet
Spacer
Spacer
Spacer
IPM30A board assembly
Terminal board 4P
Terminal board 3P
Compressor cord (for compressor)
Protection sheet (for display PWB)
Electrolytic capacitor (C9)
Electrolytic capacitor (C10)
Diode bridge (DB1)
Thermistor (TH6-TH8)
Thermistor (TH1-TH4)
Thermistor (TH1)
Caution label
Label
Label
Active filter
Insulator
Thermistor (HEATSINK)
AS
BG
BG
AV
AZ
AW
AE
AA
AE
AG
BH
AC
AC
CM
CC
AD
AY
BM
BB
BC
CM
Coil
Flare union unit 3S
Flare union unit 3S
Flare union unit 2S
3way valve unit
3way valve unit
Comp. cushion rubber
Terminal bushing
Flare nut
Flare nut
Accumulator
Nut bonnet
Nut bonnet
Compressor
Condenser
Terminal cover
Muffler
Expansion valve
Reverse valve
Coil
Compressor assembly (3-7, 3-8, 3-14, 3-16)
AD
AD
AM
AM
AE
AM
Holder
Drain joint
Installation manual (English, Italian)
Installation manual (French, Spanish)
Wire fixing band
Installation manual (Portuguese)
AB
AA
AA
AD
AC
AE
AE
AE
AB
AC
AF
AF
AB
AE
Special screw
Special screw (for earth)
Special screw
Special screw
Special screw
Special screw
Special nut
Special nut
Machine screw
Tapping screw
Machine screw
Machine screw
Special screw
Special screw
4
AEX3M18JR
NO.
PRICE NEW PART
RANK MARK RANK
PARTS CODE
DESCRIPTION
[2] CONTROL BOARD UNIT PARTS
2-2
2-2-1
2-2-2
2-2-3
2-2-4
CT1
D1 D38
D14
D19-21
D2-4
D26-37
IC1
IC2
IC3 IC12
IC4
IC5
IC6
IC7
IC8
IC9
L3 L4
L5
L6
MRY1
NR1-NR3
PC1
PC4.6.8
PC5.7.9
PTC1
Q11
Q13-15
Q2
RY1
SA1
SW1-3
TR1
DSGY-C346JBKZ
QFS-GA065JBZZ
QFS-GA062JBZZ
QFS-GA063JBZZ
QFS-GA064JBZZ
RTRN-A256JBE0
VHD1SS133//-1
VHDRK36LF011B
VHD1SR139-6-1
VHD1SR139-6-1
VHD1SR35-4A-1
RH-IXA924JBNA
RH-IZA140JBE0
RIC--A025BDE0
VHISTRL472+-1
VHIKIA339F+-1L
FH-IXA341JBKZ
RIC--A022BDE0
VHIMM1431A+-1+
VHINJM2904M-1R
RFIL-A116JBZZ
RFILNA013JBZZ
RFILNA007CBZZ
RRLYDA012JBZZ
RH-VXA002JBZZ
VHGPC81716P-1L
VHGPC817XP3-1L
VHGPC853HXP-1R
RH-QXA005JBZZ
VSKRC245M//-3
VS2SA1020Y+-1+
VS2SA1586G+-1L
RRLYDA008JBZZ
QSPGCA006JBZZ
QSW-PA016DRE0
RTRNWA034JBZZ
CD
BA
AF
AE
AF
AG
AA
AD
AB
AB
AC
BG
AE
AE
AL
AD
AU
AE
AD
AD
AY
BE
AR
AR
AF
AD
AD
AG
AW
AC
AH
AB
AH
AH
AB
AG
Control board unit
Fuse (FUSE1,101)
Fuse (FUSE3, 4)
Fuse (FUSE5)
Fuse (FUSE6)
Transformer (CT1)
Diode (D1,38)
Diode (D14)
Diode
Diode
Diode (D26~37)
Micro computer (IC1)
Integrated circuit (IC2)
Integrated circuit (IC3, IC12)
Integrated circuit (IC4)
Integrated circuit (IC5)
EEPROM-AEX3M8JR (IC6)
Integrated circuit (IC7)
Integrated circuit (IC8)
Integrated circuit (IC9)
Coil (L3,4)
Normal coil (L5)
Common coil (L6)
Relay (MRY1)
Varistor (NR1-NR3)
Photo coupler (PC1)
Photo coupler (PC4,6,8)
Photo coupler (PC5,7,9)
PTC thermistor (PTC1)
Transistor (Q11)
Transistor (Q13~15)
Transistor (Q2)
Relay (RY1)
Surge absorb (SA1)
Tact switch (SW1,2,3)
Transformer (TR1)
BV
BQ
AE
IPM30A board assembly
Power module (PS21267-P)
Cement Resistor (R100)
[3] IPM30A BOARD PARTS
2-23
2-23-1
R100
DSGY-C347JBKZ
RH-IXA859JBZZ
RR-WZA028JBE0
[4] PACKING PARTS
5-3
Fr
on
ts
ide
5-1
5-2
NO.
PARTS CODE
PRICE NEW PART
RANK MARK RANK
DESCRIPTION
[4] PACKING PARTS
5-1
5-2
5-3
SPAKCC415JBEZ
CPADBA131JBKZ
CPADBA132JBKZ
BB
AZ
AS
Packing case
Bottom pad assembly
Packing pad assembly
5
AEX3M18JR
„INDEX
PARTS CODE
[ C ]
CCHS-A789JBTB
CCIL-A133JBEZ
CFTA-A282JBKZ
CMOTLB051JBEZ
CPADBA131JBKZ
CPADBA132JBKZ
[ D ]
DBOX-A039JBYZ
DCAB-A126JBTB
DSGY-C346JBKZ
"
DSGY-C347JBKZ
"
DVLV-A455JBKZ
DVLV-A460JBKZ
DVLV-A536JBKZ
DVLV-A668JBKZ
DVLV-A669JBKZ
[ F ]
FCMPRA244JBKZ
FCOV-A330JBWZ
FH-IXA341JBKZ
[ G ]
GCAB-A366JBTA
GFTA-A455JBTB
GGADFA042JBFA
GLEG-A029JBE0
GPLTMA059JBTB
[ L ]
LANG-A451JBWZ
LANG-A458JBWZ
LANGKA236JBPZ
LBND-A046JBE0
LBNDKA154JBWZ
LBSHCA005JBE0
LHLD-0261JBM0
LHLD-A459JBEZ
LHLD-A574JBFA
LPFT-A029JBF0
LPLTPA016JBFZ
LPLTPA017JBFZ
LPLTPA018JBFZ
LPLTPA027JBFZ
LSUB-A020JBWZ
LSUB-A024JBPZ
LX-BZA075JBE0
LX-BZA078JBEZ
LX-BZA140JBE0
LX-BZA268JBEZ
LX-BZA351JBEZ
LX-BZA363JBEZ
LX-BZA364JBEZ
LX-HZA007JBEZ
LX-NZA250JBEZ
LX-NZA251JBEZ
LX-NZA313JBEZ
LX-NZA319JBEZ
[ M ]
MSPR-A026JBE0
MSPR-A027JBE0
MSPR-A036JBE0
MSPR-A046JBE0
MSPR-A129JBE0
[ N ]
NFANPA108JBFA
[ P ]
PACU-A049JBEZ
PCAP-A083JBEZ
PCAP-A084JBEZ
PCMPRA524JBEZ
PCON-A490JBPZ
PCOV-0562JBE0
PCOV-A578JBEZ
PCOV-A589JBEZ
PCOV-A601JBWZ
PCOV-B484JBFA
PDAI-A136JBTB
PFPFPD477JBEZ
No.
PRICE NEW PART
RANK MARK RANK
1-1-1
1-3-1
1-1-71
1-1-2
4-5-2
4-5-3
BD
AS
AW
BV
AZ
AS
1-2-1
1-1-3
1-2-2
2-2-2
1-2-23
3-2-23
1-3-2
1-3-3
1-3-4
1-3-5
1-3-6
AW
BE
CD
CD
BV
BV
BG
BG
AV
AZ
AW
1-3-21
1-1-4
2-IC6
CM
AZ
AU
1-1-5
1-1-6
1-1-7
1-3-7
1-1-8
BR
AP
BH
AE
AF
1-2-3
1-2-4
1-1-9
1-4-5
1-2-5
1-3-8
1-2-6
1-4-1
1-1-10
1-4-2
1-2-7
1-2-8
1-2-9
1-2-10
1-1-68
1-1-11
1-6-2
1-6-3
1-6-13
1-6-1
1-6-4
1-6-14
1-6-5
1-6-6
1-3-9
1-3-10
1-6-8
1-6-7
AE
AR
AY
AE
AN
AA
AB
AD
AE
AD
AG
AG
AG
AN
AE
AP
AA
AA
AB
AB
AD
AE
AC
AE
AE
AG
AE
AE
1-1-12
1-1-13
1-1-14
1-1-15
1-1-16
AB
AB
AB
AC
AD
1-1-17
BA
1-3-11
1-3-12
1-3-13
1-3-14
1-3-15
1-3-16
1-1-18
1-1-19
1-2-11
1-1-56
1-1-20
1-1-58
BH
AC
AC
CM
CC
AD
AE
AF
AQ
AG
AP
AG
PARTS CODE
PGUM-A115JBEZ
PGUM-A119JBEZ
PGUM-A120JBEZ
PGUM-A121JBEZ
PGUM-A141JBEZ
PGUMSA068JBE0
PGUMSA319JBEZ
PMUF-A081JBEZ
PRDAFA163JBEZ
PRDAFA215JBEZ
PRDAFA216JBEZ
PSEL-B954JBEZ
PSEL-B956JBEZ
PSEL-B966JBEZ
PSEL-C011JBEZ
PSEL-C017JBEZ
PSEL-C019JBEZ
PSEL-C037JBEZ
PSEL-C074JBEZ
PSEL-C260JBEZ
PSEL-C261JBEZ
PSEL-C262JBEZ
PSEL-C277JBEZ
PSEL-C282JBEZ
PSEL-C343JBEZ
PSEL-C353JBEZ
PSEL-C354JBEZ
PSEL-C369JBEZ
PSEL-C370JBEZ
PSEL-C371JBEZ
PSEL-C372JBEZ
PSEL-C373JBEZ
PSEL-C374JBEZ
PSEL-C376JBEZ
PSEL-C377JBEZ
PSEL-C378JBEZ
PSEL-C379JBEZ
PSEL-C382JBEZ
PSEL-C938JBEZ
PSEL-D235JBEZ
PSEL-D236JBEZ
PSHE-A195JBEZ
PSHE-A196JBEZ
PSHE-A273JBEZ
PSKR-A244JBWZ
PSPA-A064JBE0
PSPA-A065JBE0
PSPA-A146JBE0
PSPA-A150JBZZ
PSPF-A845JBEZ
PSPF-A846JBEZ
PTUB-A196JBEZ
PVLVRA040JBEZ
PVLVXA081JBEZ
[ Q ]
QFS-GA062JBZZ
QFS-GA063JBZZ
QFS-GA064JBZZ
QFS-GA065JBZZ
QSPGCA006JBZZ
QSW-PA016DRE0
QTANZA021JBZZ
QTANZA044JBZZ
QW-IZA120JBZZ
[ R ]
RC-AZA046JBE0
RC-EZA250JBZZ
RFIL-A116JBZZ
RFILNA007CBZZ
RFILNA013JBZZ
RH-HXA094JBZZ
RH-HXA095JBZZ
RH-IXA859JBZZ
RH-IXA924JBNA
RH-IZA140JBE0
RHOG-A169JBE0
RH-QXA005JBZZ
RH-TXA008JBZZ
RH-VXA002JBZZ
RIC--A022BDE0
6
No.
PRICE NEW PART
RANK MARK RANK
1-1-21
1-1-22
1-1-23
1-1-24
1-1-72
1-1-26
1-1-27
1-3-17
1-1-25
1-2-13
1-2-14
1-1-30
1-1-31
1-1-32
1-1-34
1-1-35
1-1-36
1-2-15
1-2-16
1-1-37
1-1-38
1-1-39
1-1-40
1-1-41
1-1-42
1-1-43
1-1-44
1-1-45
1-1-46
1-1-47
1-1-48
1-1-49
1-2-17
1-2-12
1-2-98
1-1-66
1-1-67
1-1-69
1-1-73
1-1-28
1-1-59
1-2-18
1-2-19
1-2-46
1-1-50
1-2-20
1-2-21
1-1-51
1-2-22
1-1-52
1-1-53
1-1-54
1-3-18
1-3-19
AM
AG
AG
AE
AG
AD
AF
AY
AP
BE
BC
AF
AF
AC
AC
AC
AD
AE
AC
AC
AC
AC
AG
AD
AE
AP
AE
AC
AC
AC
AC
AC
AC
AC
AC
AB
AB
AC
AK
AG
AG
AH
AE
AF
AR
AA
AA
AC
AF
AS
AH
AK
BM
BB
2-2-2-2
2-2-2-3
2-2-2-4
2-2-2-1
2-SA1
2-SW1-3
1-2-26
1-2-27
1-2-28
AF
AE
AF
BA
AH
AB
AN
AU
AU
1-2-62
1-2-63
2-L3 L4
2-L6
2-L5
1-2-66
1-2-67
3-2-23-1
2-IC1
2-IC2
1-2-99
2-PTC1
1-2-93
2-NR1-NR3
2-IC7
BE
BG
AY
AR
BE
BC
BC
BQ
BG
AE
AK
AW
BR
AF
AE
AEX3M18JR
PRICE NEW PART
RANK MARK RANK
PARTS CODE
No.
RIC--A025BDE0
RMOTSA031JBZZ
RRLYDA008JBZZ
RRLYDA012JBZZ
RR-WZA028JBE0
RTHM-A022JBE0
RTRN-A256JBE0
RTRN-A294JBZZ
RTRNWA034JBZZ
[ S ]
SPAKCC415JBEZ
[ T ]
TINS-B119JBRZ
TINS-B120JBRZ
TINS-B121JBRZ
TLAB-B709JBRA
TLAB-B777JBRZ
TLABBA146JBRA
TLAB-C250JBRA
TLAB-C252JBRZ
TLAB-C511JBRA
TLAB-C773JBRZ
TLABCC413JBRZ
TLAB-D244JBRZ
TLAB-D245JBRZ
TLAB-D315JBEZ
TSPC-F913JBRZ
2-IC3 IC12
1-3-20
2-RY1
2-MRY1
3-R100
1-2-80
2-CT1
1-1-55
2-TR1
AE
BC
AH
AR
AE
AN
AG
BG
AG
4-5-1
BB
1-4-3
1-4-4
1-4-6
1-1-57
1-2-83
1-1-63
1-1-60
1-1-61
1-1-76
1-1-62
1-1-64
1-2-85
1-2-84
1-1-77
1-1-65
AM
AM
AM
AH
AC
AN
AG
AK
AC
AN
AG
AM
AF
AG
AG
2-D2-4
2-D19-21
2-D26-37
2-D1 D38
1-2-65
2-D14
2-PC1
2-PC4.6.8
2-PC5.7.9
2-IC5
2-IC8
2-IC9
2-IC4
2-Q13-15
2-Q2
2-Q11
AB
AB
AC
AA
AN
AD
AD
AD
AG
AD
AD
AD
AL
AH
AB
AC
1-6-12
1-6-9
1-6-11
1-6-10
AF
AB
AF
AC
[ V ]
VHD1SR139-6-1
"
VHD1SR35-4A-1
VHD1SS133//-1
VHDD25VB60+-1
VHDRK36LF011B
VHGPC81716P-1L
VHGPC817XP3-1L
VHGPC853HXP-1R
VHIKIA339F+-1L
VHIMM1431A+-1+
VHINJM2904M-1R
VHISTRL472+-1
VS2SA1020Y+-1+
VS2SA1586G+-1L
VSKRC245M//-3
[ X ]
XBPS730P10000
XBPS740P14JS0
XBPS740P20J00
XCTS740P10000
7
EndPage
COPYRIGHT © 2008 BY SHARP CORPORATION
ALL RIGHTS RESERVED.
No part of this publication may be reproduced, stored
in retrieval systems, or transmitted in anyform or by
any means, electronic, mechanical, photocopying, recording, or other wise, without prior written permission
of the publisher.
–1