Fujitsu Inverter Halcyon ASU24CL User manual

SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED type
CONTENTS
SPECIFICATIONS ................... 1
DIMENSIONS ....................... 2
REFRIGERANT SYSTEM DIAGRAM .... 3
CIRCUIT DIAGRAM ................. 4
ERROR CONTENTS ................
5INDOOR PCB CIRCUIT DIAGRAM .....
8OUTDOOR PCB CIRCUIT DIAGRAM . . .
13
DISASSEMBLY ILLUSTRATION ....... 14
PARTS LIST ....................... 20
22 STANDARD ACCESSORIES ..........
Models
Indoor unit Outdoor unit
ASU24CL AOU24CL
ASU24RL AOU24RL

12006.03.20
SPECIFICATIONS
INDOOR UNIT
ASU24CL ASU24RL
OUTDOOR UNIT
AOU24CL AOU24RL
COOLING CAPACITY 24,200 BTU/hr 24,200 BTU/hr
HEATING CAPACITY --- 27,600 BTU/hr
POWER SOURCE 208 V / 230 V 208 V / 230 V
FREQUENCY
60Hz 60Hz
RUNNING CURRENT COOLING
10.1 A 10.1 A
HEATING --- 10.8 A
INPUT WATTS COOLING
2,310 W 2,310 W
HEATING --- 2,470 W
SEER 18.0 18.0
MOISTURE REMOVAL
6.3 Pts/hr
(3.0 L/hr)
6.3 Pts/hr
(3.0 L/hr)
AIR CIRCULATION -High 647 cfm
(1,100 m3/hr)
647 cfm
(1,100 m3/hr)
ELECTRICAL DATA
COMPRESSOR
FAN MOTOR
DIMENSIONS
TYPE
Hermetic motor compressor,
4 poles, Involute scroll type
DISCRIMINATION
POWER SOURCE
5CS160XAA23
208 V / 230 V 60Hz
REFRIGERANT R410A
3 lb. 8 oz ( 1,600 g )
POWER SOURCE 208 V / 230 V
HIGH
1,310 r.p.m.
1,120 r.p.m.
940 r.p.m.
830 r.p.m.
1,000 r.p.m.
--- 1,050 r.p.m.
1,000 r.p.m.
INDOOR UNIT MED
COOL
HEAT
LOW
QUIET
OUTDOOR UNIT
INDOOR UNIT HxWxD
HxWxD
12-5/8 x 39-1/4 x 9 inch
OUTDOOR UNIT
WEIGHT
INDOOR UNIT Gross / Net
Gross / Net
40 / 31 lbs. (18 / 14 kg )
OUTDOOR UNIT
106 / 97 lbs. (48 / 44 kg )
320 x 998 x 228 mm
22-3/4 x 31-1/8 x 12-3/8 inch
578 x 790 x 315 mm
NOISE LEVEL
REFRIGERANT CHARGE (R410A)
HIGH
47 dB
41 dB
36 dB
32 dB
C47dB / H45dB
C41dB / H41dB
C36dB / H36dB
C32dB / H32dB
52 dB C52dB / H53dB
INDOOR UNIT MED
LOW
QUIET
15 m
20 m
25 m
30 m
OUTDOOR UNIT
FULL CHARGE
AMOUNT
Pipe Length 3 lb. 8 oz. (1,600 g)
0.2 oz./ft. (20g/m)
ADDITIONAL CHARGE
3 lb. 12 oz. (1,700 g)
3 lb. 15 oz. (1,800 g)
4 lb. 3 oz. (1,900 g)

11-13/16" (300)
2-3/8"
(60)
31-1/8" (790)
23-1/4" (540)
20" (508)
3/4" (20)
4-15/16" (125)
12-5/8" (320)
1-7/8" (48)
13-11/16" (347)
22-3/4" (578)
3/8"
(10)
2006.02.23
OUTLINE AND DIMENSIONS
Unit : inch (mm)
OUTDOOR UNIT
INDOOR UNIT
2
39-1/4" (998) 9" (228)
12-5/8"
(320)

REFRIGERANT SYSTEM DIAGRAM
2-Way
valve
Strainer
Strainer
Strainer
3-Way
valve
Muffler
4-Way valve
Expansion valve
Heat exchanger
( INDOOR )
Heat exchanger
( OUTDOOR )
Sub-accumulator
Compressor
Cooling
Heating
ASU24CL / AOU24CL
ASU24RL / AOU24RL
Models :
Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 5/8" (15.88 mm)
2006.02.02 3

CIRCUIT DIAGRAM
2006.05.31 4
INDOOR UNIT OUTDOOR UNIT
TR PCB Assy (IPM)
Power Supply PCB Assy
Controller PCB Assy
Capacitor PCB
Controller PCB Assy
Indicator PCB Assy

CN11
B07B-9ASK
CN201 JB20-07HG
CN11-1 RED
CN11-2 WHITE CN11-3 WHITE
CN11-4 WHITE
CN11-6 WHITE CN11-7 WHITE
CN11-5 WHITE
1 2 3 4
5
6
7
1 2 3 4
5
6
7
1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
1 2 3 4
5
CN6 B05B-XASK CN2 SJH20-05WS CN5 SJH20-06WS
CN8 B06B-PASK
CN10 B06B-XARK
CN3
2P-SCN
CN14
B2B-XH
CN16
B3B-XH
CN1
2P-SAN
CN13
B5P-SHF-1AA
1 2
1 2 1 2 3
1 2
1 2 3 4
5
CN3-1 CN3-2
CN2-2 BLACK
CN2-1 BLACK
CN13-1
CN13-5 CN13-4
CN13-3
CN13-2
TEST
PIPE TEMPERATURE THERMISTOR
OUTPUT COMUNICATION (IN)
OUTPUT COMUNICATION (OUT)
ROOM TEMPERATURE THERMISTOR
CN6-1 RED CN6-1 WHITE
CN6-1 BLACK
CN2-1 RED CN2-2 ORANGE
CN2-3 YELLOW
CN2-4 PINK CN2-5 BLUE
CN5-1 RED
CN5-2 ORANGE CN5-3 YELLOW CN5-4 PINK CN5-5 BLUE
CN8-1 RED CN8-2 ORANGE CN8-3 YELLOW CN8-4 PINK CN8-5 BLUE
CN10-1
BLUE
CN10-2
YELLOW
CN10-3
WHITE
CN10-4
BLACK
CN10-6
RED
FAN MOTOR
DIFFUSER
LOUVER ( UP / DOWN ) LOUVER ( RIGHT / LEFT )
REMOTE CONTROL UNIT
AR-3TA TYPE
OUTDOOR UNIT
W5 TM2
22007
TM1
22007
TM4
22007
GREEN RED WHITE
BLACK
THERMAL FUSE 102 OC
EARTH TERMINAL
SERIAL
EARTH
L
N1
2
3
TERMINAL BOARD
INDICATOR PCB ASSY
K05CY-0500HSE-D0
M
M M
F. M.
BLACK
BLACK
XARR-03VF XAP-03V-1
WHITE
RED
INDOOR PCB CIRCUIT DIAGRAM
2006.03.23 5
CONTROLLER PCB ASSY
ASU24CL : K05CX-0507WSE-C1
ASU24RL : K05CX-0506HSE-C1
CONTROL UNIT
ASU24CL : EZ-005CWSE
ASU24RL : EZ-00523HSE
Models : ASU24CL ASU24RL

5V
VA6
470V
<TNR>
R106
1.0K
</2W>8
TM2
(3)
D14 DAN202K
Q11 DTC124EUA
12
3
3
2
1
2
3
1Q10
DTC124EUA C54
0.01 <B>
R114 390 <1/10W>
10 54321
14
18
827 654
I C26-14
I C26-10
321
I C1-6
I C1-47 I C1-46
R105 10K <1/10W>
5V
C50
0.01
<B>
(95)
R103
390
<1/10W>
280V
5V
(90)
I C27
PS2501L-1
<KD / KE>
D15
MTZJ30B
5V
R111 330K <1/2W> R111 330K <1/2W>
R112 62K <1/2W>
A
2 1
4 3
1
3
2
I C1-38
C52
1000P
<R>
Q12
DTC144EUA
R107
1.0K
<1/10W>
R108
10K
<1/10W>
12V
W3
(4)
12V
12V
12V
IC7 I C18 I C16
88
8
999
(59)
(58) (57)
(56)
(55)
(54)
(53)
I C7-3 uLN2003
I C7-4 uLN2003
I C7-5 uLN2003
I C7-6 uLN2003
(52)
(51) (50) (49)
(48)
12V
I C7-7 uLN2003
I C16-1 uLN2003
I C16-3 uLN2003
I C16-2 uLN2003
3
4
14
5
13
12
6
710
116
215
314
I C18-6 uLN2003
I C18-1 uLN2003
I C18-2 uLN2003
I C18-3 uLN2003
I C18-4 uLN2003
I C16-4 uLN2003
I C16-5 uLN2003
I C16-6 uLN2003
I C16-7 uLN2003
611
116
215
314
413
413
512
611
710
710
12V
I C18-7 uLN2003
(72)
R109 10K
<1/10W>
BZ
BZ1
(101)
5V
(43)
(44)
R101 330
<1/10W>
L3
BLm11
<A601>
I C25
PS2561L-1-V
L3
BLm11
<A601>
4 32
1
3 2
1
C51
0.01
<B>
CN14
R102 390 <1/10W>
R104 10K <1/10W>
CN16
(42)
(45)
(46)
1
2
2 1
3 4
2
4
3
1
12V
K10
G5N-1A
R94 330
<1/10W> I C22
PS2561L-1-V
R88 1.0K
<1/10W>
I C7-2
uLN2003
215
I C1-64
I C1-63
R79, R81 - R84
10K <1/10W> x 5 5V
I C1-76
I C1-42 I C1-41 I C1-75 I C1-74
JM5 JM6
JM7 JM8
JM10
AUTO RESTART / PLUG ON
TEMPERATURE CORRECTION-1 TEMPERATURE CORRECTION-2
REMOTE CONTROL SWITCHING-1 REMOTE CONTROL SWITCHING-2
13
2
1
2
3
IO
G
+
+
(20)
15V
C56 0.1 <F>
I C20
78M15
(19)
C42
330/
25V
R77 10K
<1/10W>
R78 10K <1/10W>
R8 1.0K <RS - 2W>
20V
(18)
C25
0.1
<F>
C39
100/
35V
I C17
PS2501L-1
<KD / KE>
5V
R72 100K <1/10W>
A
2
1
3
4
I C18-5
uLN2003
R65 330
<1/10W>
IC1
uPD780148 5V
512
I C1-43 I C1-42 I C1-41
I C1-40 I C1-39
I C1-38
ALAM RC
I C1-28 I C1-47 I C1-46
I C1-3
CS
VPP
BEN
5V
5V
R7 100K <1/10W>
44 43 42 41 40 39 38 18 19 20 21 22 23 24 25 80 79 78 77 76 75 74 73
7
6 5 4
64 63 62 61 60 59 58 57 14 12 13 15 16
2
1
3
30
2
11
10
8
1
37
36
35 34
27 26
17
3
65 66
67 68 69
70
71
72 45 46
47 48
28 29
32 33
49
50
51 52
53 54
55
56
31
9
P00 P01
P02 P03 P04 P05
P06 P10 P11
P12
P13 P14
P15 P16
P17
P20 P21
P22
P23 P24
P25
P26
P27
P30
P31
P32
P33
P40
P41
P42
P43 P44
P45
P46
P47
RST*
X1 X2
XT1
XT2 EGND
AGND
GND
REGC
IC
AVREF
P145 P144
P143 P142
P141
P140 P130 P120
P77
P76
P75
P74
P73
P72 P71
P70 P67 P66 P65 P64
P63
P62
P61
P60 P57
P56
P55
P54 P53
P52
P51
P50
EVDD
VDD
(75)
X1
8.38MHz
<CSTLS>
C34
0.1
<F>
R9
0R0
R110 10K
<1/10W>
RESET
4
53
2 1
NC
NC
VDD
VOUT
GND
5V R54 10K
<1/10W>
IC11
BD4842
C31
0.1
<F>
R57 330 <1/10W>
R60 330 <1/10W>
R58 330 <1/10W> R59 330 <1/10W>
R113 47
<1/10W>
I C1-3
C53
1000P
<R>
C40
100/
16V
+C41
0.01
<B>
SW1
(74)
(71)
(70)
(69)
(68)
(67)
(66)
(65)
CN11
7
6 5
4
3
2 1I C1-40
5V
(73)
C28
0.01
<B>
R33 1.0K
<1/10W>
R32 10K
<1/10W>
MANUAL AUTO SWITCH
(79)
R115 10K <1/10W>
5V
CN20 (78)
1 2I C1-39
C55 0.01 <B>
R116 1.0K
<1/10W>
(13)
(12)
(11)
R63 6.8K
<1/4W>
15V
15V (14)
(15)
340V
C1
0.1
<HCP>
A
6 5
4
3
2 1
4 32
1
A
A
(100)
+
2 1
3 4
15V
5V
R43 330
<1/10W>
I C10
PS2501L-1
<KD / KE>
5V
Q6 DTC124EUA
I C1-43 2
1
3
R51 1.0K
<1/4W>
1%
R47 10K
<1/10W>
R55
820
<1/4W>
C36
100/36V
I C14
PS2501L-1
<KD / KE>
R44
1.0K
<1/10W>
C30
1000P
<R> R56
4.7K
<1/10W>
I C7-1 uLN2003
R31 390
<1/4W>
1%
R30 10K <1/10W>
5V
I C5-1 BA10393F
I C5-2 BA10393F
-
-
C23
0.1
<F>
IC5
I C1-28
I C1-73
16 1
+ +
3 21
5 67
4 8
12V
R1 100K <1/10W>
R52 100K <1/10W>
5V
5V
R35
IC6 BR93LC46
R39 10K <1/10W>
C26
0.1
<F>
VCC DO
NC
GND
CS SK
DI
NC
5
7
4 8
6
3
2
1
I C1-76
I C1-75 I C1-73 I C1-74
I C1-6 I C1-4
I C1-64 I C1-63
VPP
RESET
1
2
3
4
5 6
5V 5V
R37 10K <1/10W> R40 10K <1/10W>
CN9 (91)
(92)
(93)
(94)
CS
C15 0.1 <F>
R14 1.0K
<1/10W>
5V
R2 10K
<1/10W>
1%
CN1
ROOM TEMPERATURE
2
1
R6 49.9K
<1/10W>
C16
0.1
<F>
R13 1.0K
<1/10W>
12V
12V
CN6
JP5
12V
R4 10K
<1/10W>
5V
12VD2
D1F60
D3
DAN217U
(86)
(87)
(88)
(89)
R17
10K
<1/10W>
12
3
R20 1.0K <1/10W>
R22 28K
<1/10W>
1%
R21 15.4K
<1/10W>
1%
REMOTE CONTROL UNIT
<RED>
<WHITE>
<BLACK>
JP SWITCHING
1
2 3
4 5
RESET
LED FOR INDICATOR & REMOTE CONTROL UNIT
LED
CN10
DC FAN
THE CIRCUIT FOR FAN MOTERS
I C1-4
C59 0.1 <F>
C47 0.1 <F>
C48 0.1 <F> C49 0.1 <F>
5V
R90 - R93 330 <1/10W> x 4
R95 10K <1/10W> R97 10K <1/10W> R98 10K <1/10W> R99 10K <1/10W>
TEST
CN13
(31)
(32)
(33)
(34)
(35)
1
2
3 4 5
OUTSIDE COMMUNICATION
OUTSIDE COMMUNICATION OUTPUT OUTSIDE COMMUNICATION INPUT
BUZZER
LUVER OPERATING CIRCUIT
ABNOMAL VOLTAGE DETECTOR
OFGERING POWER
IC26
H I C FOR SERIAL COMMUNICATIONS
POWER RELAY
JP SETTING
15V LINE ON-OFF CONTROL
12V
R76 7.87K <1/10W> 1%
R48 34K <1/10W>
I C19 TL431 I LPR
C37 820/ 25V
+
A C
REF
2
3
1
2
3
1
4
2
1
3
T1
0.7A - 5.0MH
TH1
5D-11
280V
D6
GS I B460L
C6
150/
315V
+
IC8
TOP243
R34 6.8K
<1/10W>
R38
15K
<1/10W>
+
C27
47/
16V
R42
270
<1/10W>
+
C29
0.1
<F>
Q7
2SA1037AK
<Q>
R45 100K
<RS - 2W> C32
0.01
<ECQE>
D7
1NH42
R46
47
<1/2W>
R49 10K <1/10W>
D8
1SS355
20V
C4
100P
<D>
D9 D1FL20U
C35
0.01 <F>
VA2
470V
<TNR>
VA3
470V
<TNR>
T2
MY064
R64
1.8K
<1/10W>
I C15
PS2501L-1
<KD / KE>
D4 D1FL20U
C33 33/ 35V
4
32
1
8
9
10
6
5 4 3
2
1T1-12
D12 D2F20U D10 D1FL20U
C38
0.1 <F>
R53
5.6K
<1/10W>
R70
1.2K
<1/10W>
R67
150
<1/10W>
6 5
43
2
1
D
F
S
C
L X
A
C8 0.47 275V
L1
(76)
5V
12
43
7V
(96)
(97)
JM3
+C22
0.1 <F>
(1)
(77)
C19 330/ 25V
T1-12
TM1
(2)
FH1 FH2
F1
VA1
470V
<TNR>
K1-4
I C26-14 I C26-10
IC2
NJM7805
VA4
470V
<TNR>
VA5
470V
<TNR>
C21 0.1 <F>
C20 0.1 <F>
C12 0.1 <F>
C18 10/ 25V
+
C17 330/ 25V
+
IO
G
1
2
3
EEPROM
ROOM TEMP. PIPE TEMP. THERMISTOR
THE SWITCH FOR OPENING AND CLOSING OF A PANEL
POWER SUPPLY CIRCUIT
REMOTE CONTROL COMMUNICATION
K1
DW12D1
K1-4
4
1
3
2
6
5
4
3 2
15
4
3 2
1
6
5
4
3 2
1
CN8
DIFFUSER
CN2
RIGHT / LEFT
UP / DOWN
CN5
W5
TM4
C13 0.01 250V
C14 0.01
250V
PIPE TEMPERATURE CN3
1
2
(36)
(37)
1 3
L6
BLm18
<BD102>
L7
BLm18
<BD102>
JM9
Q9
2SA1036(R)
2006.02.21 6
CONTROLLER PCB ASSY
ASU24CL : K05CX-0507WSE-C1
ASU24RL : K05CX-0506HSE-C1
Models : ASU24CL ASU24RL

CN201
5V
C201
0.1
<F>
5V
+ C202
47/
10V
R201
47
<1/4W>
I C201
GP1UM261R
5V
D201
SLR-325
D203
SLR-325
D202
SLR-325 5
4
6
1
2
3
7
2
1
3
VCC
OUT
GND
INDICATOR PCB ASSY
K05CY-0500HSE-D0
Models :
ASU24CL
ASU24RL
2006.02.21 7

UL1007 AWG24 RED
TM101
TM102
W16
D100
D25XB60
+
B
W17
B
B B
B B
B B
BB
B
B
B
B
B
B
W3
W18
B
W17
W19 W20 W9 W21EARTH CN100
W28 W29
TM301 TM302
B B
W12
W13
W307 W306
+
L1 L2
P
N1 N2
IO
CHOKE COIL
L = 0.3MH 30A
TM600
TM601
B
W4
COMPRESSOR
EMI FILTER
EMI FILTER
W1
W2
F200
TLC 25A - 250V, B
EMI FILTER
EMI FILTER
N
L
3 2
1
UL1015 AWG14 WHITE UL1015 AWG14 BLACK
UL1015 AWG20 RED
UL1015 AWG20 BLACK
UL1015 AWG20 WHITE
UL1015 AWG16 GREEN
UL1015 AWG14 BLACK
POWER SOURCE AC220 - 240V 50 / 60Hz
INDOOR UNIT
DC FAN MOTOR
EXPANSION VALVE
4-WAY VALVE
DISCHARGE TEMP. THERMISTOR PIPE TEMP. THERMISTOR
OUTDOOR TEMP. THERMISTOR
BROWN BROWN BLACK BLACK BLUE BLUE
1
2
1
2
1
2
CN60 B2B-XH-AM YEL YELLOW
CN61 B2B-XH-AM RED RED
CN62 B2B-XAEK-1-A BLUE CN500 B2P3-VH-B-C WHITE CN700 B6B-XARK-1-A RED CN801 B5P6-VH-B-L WHITE
DC FAN MOTOR
BLACK BLACK
WHITE
YELLOW ORANGE
BLUE BROWN RED RED
BLACK
WHITE
YELLOW
BROWN
1
3
1
2
3
4
5 6
1
2
3
4
5 6
31
SERIAL RED
CN110
B2P3-VH-B-Y
YELLOW
AC VOLT I N CT I N / OUT
CN1
B2B-XH-AM BLK
BLACK
POWER RELAY CONTROL
21
4321
CN400
B4B-XASK-1-A
WHITE
ACTPM CONTROL DC VOLT I N
CN200
B2P4-VH-B-M
WHITE 411
2345678910
CN40
B10B-XASK-1
WHITE
I PM CONTROL PEAK LOAD CURRENT
C42
B2B-XH
WHITE 21
12345678910 21
CN301
B10B-XASK-1
WHITE
I PM CONTROL
CN303
B2B-XH-AM
WHITE
PEAK LOAD CURRENT
UL1007 AWG24 BROWN
UL1007 AWG24 RED
UL1007 AWG24 BROWN
UL1007 AWG24 RED
UL1007 AWG24 ORANGE
UL1007 AWG24 YELLOW
UL1007 AWG24 GREEN
UL1007 AWG24 BLUE
UL1007 AWG24 PURPLE
UL1007 AWG24 GRAY
UL1007 AWG24 BLACK
UL1007 AWG24 WHITE
UL1015 AWG20 BLACK
UL1015 AWG20 WHITE
UL1015 AWG14 BLACK
UL1015 AWG14 GRAY
UL1007 AWG24 WHITE
UL1007 AWG24 WHITE
21
UL1007 AWG24 YELLOW
UL1007 AWG24 ORANGE
UL1007 AWG24 RED
UL1007 AWG24 BROWN
4321
56
UL1015 AWG20 WHITE
UL1015 AWG20 BLACK
03VH/SIN 1015 L250
TM305
TM304 TM303
UL1015 AWG14 x 3
BLACK WHITE
RED
UL1015 AWG14 WHITE
UL1015 AWG14 WHITE
UL1015 AWG14 WHITE UL1015 AWG14 VIOLET
UL1015 AWG14 BLUE
UL1015 AWG14 YELLOW
UL1015 AWG14 RED
UL1015 AWG14 BLACK
-
UL1015 AWG14 ORANGE UL1015 AWG14 BROWN
CT I N / OUT
F100
FSL 3.15A - 250V (EM)
F. M.
M
C. M.
EMI FILTER x 2
-
CONTROLLER PCB ASSY
K05CU-0507HUE-C1
POWER SUPPLY PCB
K05CW-0500HUE-FL0
ACTPM
I C 404
SACT32010F1
CAPACITOR PCB ASSY
K05DG-0500HUE-P0
TR PCB ASSY ( I P M )
K05CZ-0500HUE-TR0
2006.02.21 8
INVERTER ASSY
EZ-0050AHUE
OUTDOOR PCB CIRCUIT DIAGRAM Models : AOU24CL AOU24RL

C64 10K <1/10W>
C64 10K <1/10W>
2006.02.21 9
CONTROLLER PCB ASSY
K05CU-0507HUE-C1
Models : AOU24CL AOU24RL

POWER SUPPLY PCB
K05CW-0500HUE-FL0
Models : AOU24CL AOU24RL
2006.02.21 10

2006.02.21 11
TR PCB ASSY ( I P M )
K05CZ-0500HUE-TR0
Models : AOU24CL AOU24RL

2006.02.21 12
C202
660/
450V
R200
220K
<2W>
B
B
B
B
W13
VIOLET
W12
WHITE
BLUE
YELLOW
+
C201
660/
450V
C200
660/
450V
++
POWER_G
B
B
N
PW7
YELLOW
W8
BLUE
SMOOTHING CIRCUIT
CAPACITOR PCB ASSY
K05DG-0500HUE-P0
Models :
AOU24CL
AOU24RL

ERROR CONTENTS
Error Operation
LED Timer LED
Serial signal error Normal
2 flash
3 flash
4 flash
5 flash
Serial signal (reverse) error, at operation start up
Serial signal (reverse) error, during oeration
Serial signal (forward) error, at operation start up
Serial signal (forward) error, during operation
Indoor unit thermistor error 2 flash
8 flash
2 flash
Outdoor unit thermistor error 3 flash
3 flash
2 flash
3 flash
4 flash
8 flash
Indoor unit control error 4 flash
2 flash
3 flash
7 flash
4 flash
8 flash
Display
Error
2006.01.20 13
Outdoor unit control error 5 flash
2 flash
3 flash
5 flash
Indoor fan motor error 6 flash
2 flash
3 flash
Abnormal lock
Abnormal rotation
CT abnormal
Outdoor unit fan drive system abnormal
2 flash
2 flash
Refrigerant cycle error 7 flash 3 flash
5 flash
Optional function error
Model error
8 flash 3 flash
Blinking Blinking
4 flash
6 flash
Current trip error
Main relay welded
Wired remote controller error
Compressor temperature thermistor open / short
Outdoor temperature thermistor open / short
Indoor temperature thermistor open / short
Heat exchanger thermistor open
Heat exchanger middle thermistor open / short
Discharge thermistor open / short
VDD permanent stop protection
reverse VDD permanent stop protection
Forced automatic SW welded
Power interruption error
Compressor location detection error
Model error
Discharge Temperature abnormal
Cooling high pressure abnormal rise
Pressure switch trouble
Active filter voltage trouble (first time)
Active filter voltage trouble (second time)
PFC circuit error

4
2
2
4
6
1
5
5
2006.02.10 14
DISASSEMBLY ILLUSTRATION
Models : ASU24CL, ASU24RL

2006.02.22 15
Models : ASU24CL, ASU24RL
33
29
30
8
9
31 27
35
36
34
28
32

26
23
22
Models : ASU24CL, ASU24RL
2006.05.31 16
10

2006.05.31
Models : ASU24CL, ASU24RL
17
52
42
40
47
48
46
55
53
41
39
37
38

1
2
7
18
5
10
20
24
32
13 12
6
39
3
35
22
21
14
36
38
37
11
4
34
8
16
Models : AOU24CL, AOU24RL
2006.03.20 18
50
53
54
51
52
33

2006.03.20 19
Models : AOU24CL, AOU24RL
25
42
40
44
43
41
55
46
45