Sharp AH-M098E User manual

1
AH-M098E
AU-M188E
SHARP CORPORATION
MULTI SPLIT SYSTEM
ROOM AIR CONDITIONERS
INDOOR UNIT
AH-M098E
MODEL
TABLE OF CONTENTS
Page
SPECIAFICATIONS ............................................................................................................................................................. 2
EXTERNAL DIMENSIONS................................................................................................................................................... 3
WIRING DIAGRAMS............................................................................................................................................................ 4
ELECTRICAL PARTS .......................................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM .......................................................................................................................... 6
TROUBLE SHOOTING OF CONTROL CIRCUIT .............................................................................................................. 14
REFRIGERATON CYCLE.................................................................................................................................................. 19
DISASSEMBLING PROCEDURE ...................................................................................................................................... 20
TROUBLESHOOTING OF THE CONTROL CIRCUIT...................................................................................................... 21
REPLACEMENT PARTS LIST........................................................................................................................................... 25
AU-M188E
OUTDOOR UNIT
Intheinterestsofuser-safety(Requiredbysafetyregulationsinsome
countries) thesetshouldberestoredtoitsoriginalconditionand only
parts identical to those specified should be used.
(2 INITS)
SERVICE MANUALS8862AHM098E/

2
AH-M098E
AU-M188E
ITEMS INDOOR UNIT OUTDOOR UNIT
AH-M098E AU-M188E
Cooling capacity kW [1Unit] 2.5, [2Unit] 2.4 x 2
Moisture removal Liters/h 1.2 x 2
Electrical data
Phase - Single
Rated frequency Hz 50
Rated voltage range V 198 to 264
Rated voltage V 220 - 240
Rated current A [1Unit] 4.1 - 4.1, [2Unit] 7.6 - 7.5
Rated input W [1Unit] 890 - 950, [2Unit] 1650 - 1760
Power factor % [1Unit] 99 - 97, [2Unit] 99 - 98
Compressor Type Hermetically sealed rotary type
Model 2PS154D3AA01
Oil charge 270cc (SUNISO 4GDID)
Refrigerant system Evaporator Louver fin and Grooved tube type(7mm tube)
Condenser Fin and Grooved tube type
Control Capillary tube
Refrigerant volume 750 g x 2
Capillary tube size Outer dia. mm - 2.7
Inner dia. mm - 1.5
Lenght mm - 700
Q’ty - 2
Noise level High dB(A) 37 53 - 54
Med. dB(A) 33 -
Low dB(A) 29 -
Fan system
Drive Direct drive Direct drive
Air flow quantity High m3(cft)/min. 6.8 42
Med. m3(cft)/min. 5.7 -
Low m3(cft)/min. 4.8 -
Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4"
Refrigerant pipe sets No. AZ-24T5F; 5m(16.4ft), AZ-24T7E;7m(23ft)
Drain piping mm(Inches) O.D ø 18(45/64)
Others
Safety device Compressor: Overload protector(MRA98963-9201)
Fan motors: Thermal fuse Thermal Protector
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Net dimensions Width mm(Inches) 790(31-3/32) 890(35-1/16)
Height mm(Inches) 270(10-5/8) 637(25-5/64)
Depth mm(Inches) 150(5-15/16) 297(11-11/16)
Net weight kg 7 56
Note: The condition of ( ) marked item are ‘IEC 335-1’.
SPECIFICATIONS

3
AH-M098E
AU-M188E
EXTERNAL DIMENSIONS
Figure E-2. OUTDOOR UNIT
27
275
61720
70 135
210
275
637
945 297
890 26055
590 150
Figure E-1. INDOOR UNIT
270
790 150
1800
Remote controll
58 19.5
182
Length unit (mm)

4
AH-M098E
AU-M188E
WIRING DIAGRAMS
Figure W-2. Wiring Diagram for AU-M188E
11 NN
Figure W-1. Wiring Diagram for AH-M098E
BK
INTERNAL
THERMOSTAT
FAN 
MOTOR
FAN CAPACITOR
S
A
C
M
BK BL
R
BK C
RE
RE
GR
YERELAY ( A ) BK
BK
6
42318
57
RELAY
(B)
RE
RE
BL
BK
BK
RE
OR
G(Y)
OR BR
BR
RE
BL
YE
BK
BR
RE
OR
WH
GR
G(Y)
: BLUE
: YELLOW
: BLACK
: BROWN
: RED
: OR
: WHITE
: GRAY
: GREEN-
YELLOW
WH OR
RUNNING CAPACITOR (B)
370V 25µF
R
COM-
PRESSOR
MOTOR
S
G(Y) SURGE
ABSORBER
(A)
SURGE
ABSORBER
(B)
TERMINAL
BOARD
OUTDOOR UNIT
OVERLOARD
RELAY
CWH
RUNNING CAPACITOR
(A)
COMPRESSOR
MOTOR
460V 4µF
OVERLOAD
RELAY
370V 25µF
(BASIC DIAGRAM)
UNIT TO UNIT CORD
UNIT TO UNIT CORD
BASIC 
DIAGRAM
INDOOR
UNIT B
TERMINAL
BOARD
INDOOR
UNIT A
TERMINAL
BOARD
1
NN
1
1
2
N
L
N
UNIT B
L
UNIT A
6
42318
57

5
AH-M098E
AU-M188E
ELECTRICAL PARTS
For Model AH-M098E and AU-M188E
DESCRIPTION MODEL REMARKS SITE
Compressor 2PS154D3AA01 220 - 240V, 50Hz, 700W AU
Indoor fan motor ML-A411 220 - 240V, 50Hz AH
Outdoor fan motor ML-A457 220 - 240V, 50Hz AU
Indoor fan motor capacitor - 400V, 1µF AH
Outdoor fan motor capacitor - 460V, 4µF AU
Running capacitor - 370V, 25µF AU
Transformer - Primary; AC 220V, 50Hz AH
Secondary; AC16.1V, 50Hz
Fuse - 250V, 2.5A AH

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AH-M098E
AU-M188E
Figure L-1. Electronic Control Circuit Diagram
MICROCOMPUTER CONTROL SYSTEM

7
AH-M098E
AU-M188E
Figure L-2 -1. Printed Wiring

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AH-M098E
AU-M188E
Figure L-2-3. Printed Wiring Board of Switch Unit
Figure L-2-2. Printed Wiring Board of Receiver & LED Unit

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AH-M098E
AU-M188E
MICROCOMPUTER CONTROL SYSTEM
1. Temperature control characteristic
1-1 Operation COOL
In the mode “COOL”, the thermostat circuit is
controlled by four thermostat lines (C1 ~ C4).
2. Operation modes
2-1 Operation COOL
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-2
Room temperature( C)
Preset temperature(˚C)
18 32
D1
D2
D3
17.5
18.5
19.5
31.5
32.5
33.5
2-2 Operation DRY
On the switch on, the compressor always starts
to operate for 2 minutes with fan speed “D”
(slower than “UL”).
The microcomputer reads 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-3
Room temperature(C˚)
Preset temperature(C˚)
Room
temperature
transition
C3
C4
States 1 & 3 : Compressor ON
State 2 : Compressor OFF
1
2
3
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
Figure H-1
1-2 Operation DRY
In the mode “DRY”, the thermostat circuit is
controlled by three thermostat lines (D1 ~ D3).

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AH-M098E
AU-M188E
3. FAN speed
Fan speeds are given by the indoor fan motor, “M”
(fastest), “L”, and “UL”, which are available in the
following operation mode.
Table H-2
FAN Switch COOL FAN ONLY
HIGH M M
LOW L L
SOFT UL UL
Room temperature(C˚)
Preset temperature(C˚)
Room
temperature
transition
D3
D2
D1
States 1 & 5 : Cooling zone
States 2 & 4 : Dehumidifying zone
State 3 : Circulating zone
4
5
3
1
2
Figure H-4
Table H-1
CompressorFan
Speed
Cooling zone ON “UL”
Dehumidifying ON “D”
zone
Circulating zone OFF “D” or OFF
2-3 Operation FAN ONLY
The indoor fan motor always turns on.
4. Freeze preventive
When the indoor pipe temperature falls below -1˚C
during cool operation or dry operation, the compressor
is stopped.
5. Test run
If the “TEST RUN” button in the unit is pushed during
suspension of operation, cool test operation starts.
At this time, the fan speed is set to “AUTO”. If this
button is pushed during operation, the test operation
starts in current operation mode.
The operation LED (red) flickers during test run.
In the mode cool continuous (compressor ON)
operation is performed. In the mode dry operation os
in the operation dehumidifying zone. In the fan only
mode the indoor fan only mode the indoor fan motor
runs continuously.