Sharp AH-A129E, AU-A129E Service Manual
SER VICE MANU AL
SPLIT SYSTEM
ROOM AIR CONDITIONERS
AU-A129E
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.
OUTDOOR UNIT
INDOOR UNIT
AH-A129E
MODELS
S2918AHA129E/
AH-A129E
AU-A129E
TABLE OF CONTENTS
SPECIFICATIONS ............................................................................................................................................ 2
EXTERNAL DIMENSIONS................................................................................................................................ 3
WIRING DIAGRAMS......................................................................................................................................... 4
ELECTRICAL PARTS ....................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM........................................................................................................ 8
FUNCTIONS ..................................................................................................................................................... 9
REFRIGERATION CYCLE.............................................................................................................................. 13
PERFORMANCE CURVE............................................................................................................................... 15
DISASSEMBLING PROCEDURE ................................................................................................................... 16
TROUBLESHOOTING OF THE CONTROL CIRCUIT .................................................................................... 21
REPLACEMENT PARTS LIST ........................................................................................................................ 24
Page
SHARP CORPORATION
1
AH-A129E
Phase – Single
Rated frequency Hz 50
Rated voltage range V 198 to 264
Rated voltage V 220 - 240
Rated current Cool A 5.3 - 5.1
Rated input Cool W 1150 - 1180
Compressor Type Hermetically sealed rotary type
Model RH207VXET
Oil charge 520cc (DIAMOND MS56))
Refrigerant system
Evaporator Louver fin and Grooved tube type(7mm tube)
Condenser Louver fin and Grooved tube type(7mm tube)
Control Capillary tube
Refrigerant volume 940g
Capillary tube size
Outer dia.
mm – 2.7
Inner dia.
mm – 1.6
Lenght mm – 700
Q'ty – 1
Noise level High dB(A) 42 48
Med. dB(A) 40 –
Low dB(A) 36 –
Fan system
Drive Direct drive Direct drive
Air flow quantity High m3/min. 9.3 26
(at cooling) Med. m3/min. 8.4 –
Low m3/min. 7.0 –
Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 1/2", 1/4"
Refrigerant pipe sets No. AZ-24T7F; 7m(23ft)
Drain piping mm(Inches) O.D ø 18(45/64)
Others
Safety device Compressor: Overload protector(Internal)
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Net dimensions Width mm 897 720
Height mm 297 535
Depth mm 186 236
Net weight kg 10 35
Note: The condition of star(
AU-A129E
SPECIFICATIONS
ITEMS INDOOR UNIT OUTDOOR UNIT
AH-A129E AU-A129E
Cooling capacity kW 3.45
Moisture removal Liters/h 1.3
Electrical data
) marked item are 'IEC378'.
2
EXTERNAL DIMENSIONS
297
186
897
Length unit (mm)
Remote controller
58
19.5
182
430
720
775
143
55
245
535
278
236
228
20˚
58
AH-A129E
AU-A129E
Figure E-1. INDOOR UNIT
Figure E-2. OUTDOOR UNIT
3
AH-A129E
THERMISTOR
(PIPE TEMP.)
THERMISTOR
(ROOM TEMP.)
LOUVER
MOTOR
1
2
3
4
5
6
CN5
CN3
CN101
CN8
CN1
BCN
CN201
RECEIVER
& LED UNIT
SWITCH
UNIT
THERMAL FUSE
TRANSFORMER
CONTROL
BOARD UNIT 2
WH
WH
RE
RE
FAN MOTOR
CAPACITOR
430V 2µF
FAN MOTOR
R.P.M
SIGNAL
BL
BK
BL GR
RE
CN6
CN7
CN4
CN2
SSR
(C)
(A)
(B)
NR
VARISTOR
RY
CONTROL BOARD UNIT 1
OUTIN
BK
BL
250V
FUSE
T2.5A
INDOOR UNIT
TERMINAL BOARD 2
OUTDOOR UNIT
TERMINAL
BOARD
EVAPO-
RATOR
INTERNAL
THERMAL
FUSE
TERMINAL
BOARD 1
POWER
SUPPLY
CORD
BR
BL
G(Y)
N
L
G(Y)
G(Y)
N
1
UNIT TO UNIT CORD
BL
BR
BL
BK
BL
BR
GR
G(Y)
RE
WH
: BLACK
: BLUE
: BROWN
: GRAY
: GREEN–YELLOW
: RED
: WHITE
N
5
7
1
2
1
5 3 1
INDOOR UNIT
TERMINAL BOARD 2
TERMINAL
BORAD 1
UNIT TO UNIT CORD
OUTDOOR UNIT
TERMINAL BOARD
CONDENSER
INTERNAL
THERMAL FUSE
FAN
MOTOR
FAN MOTOR
CAPACITOR
430V 1.5µF
COMPRESSOR
MOTOR
MOTOR
PROTECTOR
RUNNING
CAPACITOR
400V 30µF
BK
BK
WH
RE
R
BL
BL
BL
BK
RE
G(Y)
C
S
11
N
N
L
BK
BL
G(Y)
RE
WH
:BLACK
:BLUE
:GREEN-YELLOW
:RED
:WHITE
N
AU-A129E
WIRING DIAGRAMS
Figure W-1. Wiring Diagram for AH-A129E
Figure W-2. Wiring Diagram for AU-A129E
4
AH-A129E
AU-A129E
ELECTRICAL PARTS
DESCRIPTION MODEL REMARKS SITE
Compressor RH207VXET 220/240V, 50Hz, 1000W AU
Indoor fan motor ML-A525 220 - 240V, 50Hz, 220V, 60Hz AH
Outdoor fan motor ML-A593 220/240V, 50Hz, 220V, 60Hz AU
Indoor fan motor capacitor – 430V, 2µF AH
Outdoor fan motor capacitor – 430V, 1.5µF AU
Running capacitor – 400V, 30µF AU
Transformer – Primary; AC 220/240V, 50Hz AH
Secondary; AC14.5/15.9V, 50Hz
Fuse – 250V, 2.5A AH
5
+
–
+–+
–
+
–
+
–
+
–
+
–
19
P4118P4217P4316P4415P4514P46
13F12
RESET
33
P2734P2635P2536P2437P2338P2239P2140P20
41K142
P1743P1644P1545P1446P1347P1248P1149P1050P0751P06
11
CK1
SM8313
IC1
10
CK2
9
AGND
8
P307P316P325P334P503P512P521P53
32
TEST
52
P05
53
P04
54
P03
55
P02
56
P01
57
P00
58
GND
59
VDD
60
VR
61
P57
62
P56
63
P55
64
P54
31
30
OCS
IN
OCS
OUT
29
P60
28
P61
27
P62
26
GND
25
P63
24
P64
23
P65
22
P66
21
KH
20
P40
IC3 IC2
IC5
RPM
3
4
321
321
3
1 5
1
123
54321
12345
12345
561
2
561
2
12345
6
L
N
N
1
3
5
2
7
7
7
4
C6
100µ
10v
C5
0.1µ
50v
C4
47µ
25v
C3
0.22µ
50v
C16
0.1µ
50v
C14
0.01µ
16v
C18
1000P
50v
C15
0.1µ
50v
C19
1000p
50v
C21
1000P
50v
C7
0.1µ
50v
C23
1000P
50v
C17
1000P
50v
C13
1000P
50v
C8
10µ
10v
(C102)
0.1µ
25v
C101
33µ
10v
C11
10µ
16v
C10
10µ
16v
C22
1000P
50v
C2
2200µ
35v
C1
0.1µ
250vAC
NR
R2
22k
R30
10k
R22
1k
R4
6.8k
R7
3.3k
R23
33k
R19
10k
R18
15kF
R17
15kF
R5
2.7k
R24
4.7k
R21
10k
R20
10k
10k
10k
10k
10k
R31
R32
R33
R34
R35 10k(F)
R36 10k(F)
R37 10k(F)
R38 10k(F)
R39 10k(F)
R25
1.2k
R29 330
R41 10k
R40 10k
R28 680
R26
680
NC
NC
NC
NC
NC
NC
NC
R3
22k
R6
470
1/2w
RY1
OUT
5V 12V
OUT
7812
D1
D3 D4
D2
G F
A C
13 11
SSR
S201D01
L
FUSE
2.5A 250V
CNR3
C12 0.01µ 250vAC
FAN MOTOR
CAPACITOR
THERMAL
PROTECTOR
B
IN OUT
RY1
POWER
SUPPLY
TERMINAL
BOARD 3P
GREEN/YELLOW
EARTH LINE
NEUTRAL LINE
OUTDOOR UNIT
FAN MOTOR
BCN
CN8
CN2
CN2
Q3
3
1
2
CN1
12V
TR
12V
IC4
9
8
12V
12V 12V
SSR
CN101
CN201 CN7
CN6
PHOTO DETECTOR UNIT
AUX.
(TEST RUN)
(YELLOW) LED102
(RED) LED101
2
3
CN3
CN4
CN8 BCN
LOUVER MOTOR
NOTE :
1. : TEST POINT
5V
BCN
CN8
D9
5V
5V
5V
5V
5V 5V
5V
5V
5V
5V
12V
TEST
TH1
ROOM TEMP.
15k(25˚C)
TH2
PIPE TEMP.
15k(25˚C)
BZ
5V
5V
10V
NCNCNC
NCNCNC
NC
123
4
8
7
IC6
6
5
JP14
DE. FAN B
12H/24H
SWEAT
PREHEAT
FAN L
FAN M
FAN H
MODEL B
MODEL A
WIRELESS
RPM PLUSE
DEICE B
DEICE A
D. FAN OFF
OFF WIDEH
DE. FAN A
FREEZE B
FREEZE A
POWER ON
JP13
JP12
JP11
JP9
JP7
JP5
JP4
Q1
OCS
8MHz
3
3
3
2
1
1
1
2
2
JP10
JP6
JP3
JP1
JP2
R10R9R8
R12
R11
JP8
CN5
IN IN
THERMAL FUSE
GND GND
2. Not specified is 1/5w
FUNCTION 12H / 24H
IC1 PIN NO.
19
(P41)
SYMBOL JP10
SET X NONE
DEICE
B
DEICE
A
15
(P45)
JP5
14
(P46)
JP4
X NONEX NONEX NONE
SWEAT
ON/OFF
8
(P30)
JP6
D. FAN OFF
OFF/ON
17
(P43)
JP9
X NONE
OFF WIDEH
3/5min.
16
(P44)
JP7
X NONE
WIRELESS
CHANG/
NORMAL
5
(P33)
JP2
X NONE
RPM
PLUSE
1/3
7
(P31)
JP3
USE
PREHEAT
OFF/ON
6
(P32)
JP1
2.7k(F) 2.7k
FAN L
4
(P50)
R10
3.9k(F)
FAN M
3
(P51)
R9
FAN H
2
(P52)
R8
1.2k(F)
MODEL
B
1
(P53)
R12
7.32k(F)
MODEL
A
64
(P54)
R11
X NONE
DE. FAN
B
33
(P27)
JP14
X NONE
DE. FAN
A
34
(P26)
JP13
X NONE
FREEZE
B
35
(P25)
JP12
X NONE
FREEZE
A
36
(P24)
JP11
X NONE
POWER ON
ON/OFF
40
(P20)
JP8
USE
AH-A129E
AU-A129E
6
Figure L-1. Electronic Control Circuit Diagram
DPWBFA JBK0(P)
250V 2.5AT
GRAY
BROWN
C12
(F)
FUSE
RY1
OUT
R6
SSR
CNR3
2
13
1
7
C4
12V
7
CN8
1
(FAN MOTOR)
CN2
CN5
(B)
(E)
CN7
CN6
R5
BCN
JP15
JP17
1
1
1
1
3
3
5
CN1
CNR1
D5
D3
QPWBFB253JBE0(P)
D1
D4
D2
R3
R2
1
(TRANSFORMER)
RY3
RY2
C2
C3
IC2
OUT
IN
GND
7
5
7
1
CN4
(THER-
MISTOR)
DPWBFA047JBK0
QPWBFA891JBE0
R14
R13
SW102
CN201
CN3
1
3
AUX
SW101
TEST
RUN
CT
D7
BZ
N
(A)
ORANGE
CNR2
(D)
PURPLE
BROWN
BLUE
BLUE
L
(RPM)
JP16
NR
(G)
C1
1
5
(C)
F.M.
CAP
F.M.
CAP
3
2
R10
JP35
R36
R9
R11
JP29
JP30
JP31
R30
JP20
R29
R28
C20
C7
R39
R12
R8
R38
R37
PHOTO DETECTOR UNIT
R33
R32
R31
TIMER
DEICE B
DEICE A
JP4
JP34
JP5
JP9
C15
OSC
JP7
R23
R21
R22
JP12
JP14
JP13
REEZE B
DEF FAN A
DE FAN B
OFF WIDEH
D. FAN OFF
SWEET
R.P.M.
PREH.
WIREL
F.M.
M.A.
M.B.
F.H.
REEZE A
POWER ON
JP25
D6
JP24
JP23
JP18
JP21
JP22
GND
12V
5V
R40
R41
R25
DIP
D9
LOUVER
MOTOR
(
)
JP19
JP36
JP11
JP8
IC6
R20
DPWBFA
JBK0(C)
JP10
R34
JP2
JP1
JP3
JP6
QPWBFB253JBE0(C)
JP33
IC5
3
2
1
JP35
JP32
R4
20
19
1
64
52
C8
C23
Q1
3
R26
51
IC1
CN101
RECEIVER
LED102
(YELLOW)
LED101(RED)
C101
QPWBFB
126JBE0
32
33
GND
IN
1
3
C9
C10
R17
R19
R18
C11
OUT
IC3
C5
6
Q2
C6
C17
1
1
16
IC4
8
1
9
JP26
JP27
JP28
C13
C21
C22
R24
C19
R7
C14
C16
C18
Q3
3
1
R16
R15
DSGY-A878JBK0
DPWBF
A092
JBK0
5
1
DIP
N
L
From
Thermistor
From fan motor
From
Terminal
board " L "
From
Terminal
board " 1 "
To
Fan motor
capacitor
To
Fan motor
capacitor
From
Transformer
From louver
AH-A129E
AU-A129E
Figure L-2. Printed Wiring Board
7
AH-A129E
AU-A129E
MICROCOMPUTER CONTROL SYSTEM
Microcomputer (IC1)
The microcomputer is a CMOS, one chip, 8-bit microcomputer.
Microcomputer port allocation is as follows.
Pin Terminal Input
No. Name Output Function
1 P53 IN MODEL B
2 P52 IN FAN H
3 P51 IN FAN M
4 P50 IN FAN L
5 P33 IN WIRELESS
6 P32 IN PREHEAT
7 P31 IN PRM PLUSE
8 P30 IN SWEAT
9 AGND IN 0V
10 CK2 IN OSILLATION
11 CK1 IN OSILLATION
12 RESET IN RESET
13 F OUT BUZZER
14 R46 IN DEICE A
15 R45 IN DEICE B
16 R44 IN COMP. OFF WIDTH
17 R43 IN DEHUM. FAN OFF
18 R42 IN TEST 1
19 R41 IN –
20 R40 IN –
21 KH IN PRM SIGNAL
22 P66 IN –
23 P65 IN –
24 P64 IN –
25 P63 IN AC CLOCK
26 GND IN 0V
27 P62 IN –
28 P61 OUT EEPROM CLOCK
29 P60 IN EEPROM DATA
30 OSC IN –
31 OSC OUT –
32 TEST IN –
Pin Terminal Input
No. Name Output Function
33 P27 IN MODEL 4
34 P26 IN MODEL 3
35 P25 IN MODEL 2
36 P24 IN MODEL 1
37 P23 IN SWITCH AUX.
38 P22 IN SWITCH TEST RUN
39 P21 IN –
40 P20 IN POWER ON
41 KI IN WIRELESS SIGNAL
42 P17 OUT LED OPERATION
43 P16 OUT LED TIMER
44 P15 OUT –
45 P14 OUT –
46 P13 OUT (VALVE COIL)
47 P12 OUT (OUT DOOR FAN)
48 P11 OUT RY1
49 P10 OUT SSR
50 P07 OUT LOUVER MOTOR
51 P06 OUT LOUVER MOTOR
52 P05 OUT LOUVER MOTOR
53 P04 OUT LOUVER MOTOR
54 P03 OUT –
55 P02 OUT –
56 P01 OUT –
57 P00 OUT –
58 GND IN 0V
59 VDD IN 5V
60 VR IN 5V
61 P57 IN (CURRENT LEVEL)
62 P56 IN TH1
63 P55 IN TH2
64 P54 IN MODEL A
8
FUNCTIONS
Room temperature( C)
Preset temperature(˚C)
18
32
C1
C2
C3
C4
17.5
18.5
19.5
20.5
31.5
32.5
33.5
34.5
Room temperature( C)
Preset temperature(˚C)
18
32
D1
D2
D3
17.5
18.5
19.5
31.5
32.5
33.5
Room temperature
Preset temperature
Room
temperature
transition
C3
C4
States 1 & 3 : Compressor ON
State 2 : Compressor OFF
1
2
3
Room temperature
Preset temperature
Room
temperature
transition
D3
D2
D1
States 1 & 5 : Cooling zone
States 2 & 4 : Dehumidifying zone
States 3 : Circulating zone
3
4
5
1
2
AH-A129E
AU-A129E
1. Temperature control characteristic
1-1 COOL operation
In the “COOL” mode, the thermostat circuit is
controlled by four thermostat lines (C1 thru C4).
Figure H-1
1-2 DRY operation
In the “DRY” mode, the thermostat circuit is
controlled by three thermostat lines (D1 thru
D3).
2. Operation modes
2-1 COOL operation
The compressor turns on or off, at the
thermostat lines C3 and C4. The outdoor fan
motor is also controlled with the compressor.
Figure H-3
2-2 DRY operation
On the switch on, the compressor always starts
to operate for 2 minutes with fan speed “D”
(slower than “UL”).
The microcomputer measures the room
temperature 2 minutes after this first compressor
operation. This room temperature is set as the
preset temperature automatically. The preset
temperature ranges from 18˚C to 32˚C. When
the room temperature is below 18˚C, the preset
temperature is set to 18˚C, and when the room
temperature is over 32˚C, the preset
temperature is set to 32˚C
Dry operation is divided into three zones
(Cooling zone, Dehumidifying zone and
Circulating zone) by thermostat lines (D1 to
D3), and the compressor and the fan motor
are controlled in each zone as shown in Table
H-1.
Figure H-2
Figure H-4
9
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