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

6
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

8
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

9
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.

11
AH-M098E
AU-M188E
Room temperature(C˚)
Preset temperature (C˚)
Room
temperature
transition
C3
C2
C1
States 1 & 5 :"M"
States 2 & 4 : "L"
State 3 : "UL"
1
2
3
4
5
6. Timer
6-1 24-HOURS PROGRAMMABLE ON/OFF TIMER
ON-TIMER or OFF-TIMER can be independently
programmed.
The unit operaater at the preset temperature
during one hour after the OFF-time is set, and
then preset tempeerture is automatically shifted
up (+1˚C in cool operation and dry operation).
When the ON-timer is set in cool operation,
operation starts befor 0 to 30 minutes (depends
on the room temperature), so that prset
temperature is obtaind at set time.
6-2 ONE-HOUR TIMER
When ONE-HOUR TIMER is set, the unit turns
off automatically after one hour. The ONE-
HOOUR TIMER operation has priority over other
time operation, such as the TIMER ON and
TIMER OFF. If the button One-HOUR TIMER is
pressed again during operation, the unit will
operate additionally for another one hour.
7.Automatic air conditioning
When automatic air conditioning is selected, the
operation mode and preset temperature are set
automatically according to the room temperature on
starting operation. Table H-3
Room temperature Operation Preset
of operation start Mode temperature.
Above 28˚C 26˚C
26 to 28˚C COOL 25˚C
24 to 26˚C 24˚C
Below 24˚C DRY Room
temperature at
operation start
8. Automatic fan speed control
If the automatic fan speed is selected in cool operation,
the fan speed is automaatically shanged according to
the thermostat line C1 C2, snd C3.
Figure H-5
9. Outputs at each operation mode
Table H-4
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
ON
L/UL
UL/D
D/OFF
OFF OFF ON
Cooling
Dehumidifying
Circulating
DRY
Compressor Outdoor
Fan motor Indoor Fan motor
FAN ONLY
COOL Cooling
Circulating
10.Power on start
If the connecting wire "Power ON"(JP8) is cut on the
PWB ass’y, when the power is supplied by turning on
a circuit breaker, the air conditioner automatically starts
of operation in “AUTO” .
11.AUTO restart
If the connecting wire "MEMORY" (JP9)is cut, and on
IC6 is soldered on the PWB ass'y, and power failure
occurs during operation, the unit will restart in the
same operation mode, after power recovery.

12
AH-M098E
AU-M188E
12.Trouble suspension
When indoor fan motor is out of order or compressor-lock occurs, the compressor, indoor fan motor, outdoor fan
motor, and louver are all stopped and the operation LED(red) turns off and the timer LED(yellow) turns on or off
as follows.
13.Test mode
13-1 TEST 1(For control circuit operation checking)
Make terminals 1 and 2 of connector CN4 short-
circuited and supply the power.
Hereby the timer's period becomes shortened.
In this test mode, the control times are shortened
as follows.
The operation LED flicker's period:
in Test run : not shortened
The protector timer:
The protector timer:
Other controls: 1/60(ex.: 3 min. to 3 sec.)
ON
OFF
1sec.
1sec. 4sec.
Timer LED
(yellow)
13-2 TEST 2 (For output of each operation checking)
Keep pushing both the buttons, "AUX." and :
"TEST RUN" and supply the power, the system
will go to the test 2 mode.
In this mode, the output of operation is switched
by pushing the button "TEST RUN" on the unit
or the button "0/I" on the remote controller.
Use the button "AUX." to back to step 1.
Normal outputs are shown in Table H-5, H-6.

13
AH-M098E
AU-M188E
Table H-5
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Output for outdoor unit Lamps
RED YELLOW Indoor
Fan motor Louver
OFF
(Back to step 1)
OFF OPEN
ON D OFFFlickering
M OFF
L CLOSE
D OFF
UL OFF
(ON) OFF
M OFF
L OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
ON
12
3
44
1
2
3
: 7˚C Room temp. 42˚C ON 
: 7˚C (Room temp.) or (Room temp.) 42˚C OFF
: –2˚C Pipe temp. 42˚C ON 
: –2˚C (Pipe temp.) or (Pipe temp.) 42˚C OFF
: When the Power on start is effective, timer LED (yellow) is OFF.
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
ON
ON
ON
4: When Auto Restart is effective, Operation LED (red) is OFF, and timer LED (yellow) is ON.
ON

14
AH-M098E
AU-M188E
TROUBLESHOOTING OF A CONTROL CIRCUIT
measure the secondary voltage
of transformer.
YES
NO
YES
NO
The machine does not function
at all with remote controller and
switches on the indoor unit.
Using a tester, measure the 
voltage between terminal " 1 "
and " 2 " of connector CN2 of 
Indoor's P.W.B. ass'y.
Is the measured value 
approx. 16.0 Vac ?
Replace the Indoor P.W.B. ass'y 
with a new one. Is the 2.5A fuse down ?
Replace the fuse and varistor 
with new ones. Replace the transformer with
a new one.
Å@

15
AH-M098E
AU-M188E
YES
NO
NO
YES
The machine does not function
with the remote controll.
Push the "OI(ON/OFF)"button on 
the wireless remote controll.
Is transmitting
indicator of the remote 
controller active ?
Is indicator lamp of
indoor unit proper ?
Replace the Indoor 
P.W.B. ass'y with a new one.
Does beep sound
from the indoor unit ?
Does connector
CN101 & CN6 connect 
in place ?
Using a tester,
measure the voltage
between terminals
of resistor R15
on the P.W.B. ass'y.
Push the button "OI".
Are batteries of the
wireless remote controll 
proper ?
Replace the batteries 
with new ones.
Replace the wireless
remote controll.
When the signal is
received, does the voltage
change ?
Replace the Indoor P.W.B. ass'y 
with a new one.
P.W.B. ass'y is normal.
Inspect the outdoor unit.
NO
YES
YES
NO
YES Replace the display unit 
with a new one.
Connect the 
connector 
properly.
NO
YES
NO
AH-L086V: 
"O/I" button
AH-L086V: R30

16
AH-M098E
AU-M188E
The room is not cooled at all
or not cooled.
The compressor does not operate.
Measure resistances of TH1 and TH2.
Push the "TEST RUN" button on 
the indoor unit, and wait 3 minutes.
Is the voltage
between terminal "N" and
"1" of the terminal board the
power supply voltage ?
Are the resistances
conformed Fig. 1 ?
Replace the thermistor ass'y with a new one.
NO
YES
YES
NO
Replace the Indoor's P.W.B. ass'y with a new one.
0
20
40
60
80
100
120
140
160
180
K
0 10 20 30 40˚C-10
CHARACTERISTIC OF TH1 & TH2
Fig. 1
10˚C
30K
Using a tester, measure voltage at
the terminals on the terminal board.
A

17
AH-M098E
AU-M188E
REFRIGERATION CYCLE
Figure R-1. Refrigeration Cycle
At Cooling
Figure R-2. Flow of Refrigerant
Indoor unit A Indoor unit B
Service port Service port
OUtdoor unit
Evaporator Evaporator
Flare coupling Flare coupling
Flare coupling
Muffler
Flare coupling
StrainerCondenser
Compressor A Capillary
tube
Strainer
Compressor A Capillary
tube
Flare coupling Flare coupling
Flare coupling Flare coupling
33
11
44
22
SS
Accumulator Accumulator
Muffler

18
AH-M098E
AU-M188E
Cycle temperature and service port pressure
ISO Cooling and Heatpump condition
Indoor side Outdoor side
Cooling Temperature (˚C) Relative humidity (%) Temperature (˚C)
27 47 35 40
Relative humidity (%)
Dimension of Capillary tube
O.D. I.D. L
Capillary tube ø 2.7 ø 1.5 700
1 unit running
73˚C
42˚C
12˚C
7˚C
0.50MPa
(ISO Cooling)
Service port pressure
Gauge pressure
1
2
3
4
2 unit running
71˚C
41˚C
12˚C
6˚C
0.50MPa
Cooling

19
AH-M098E
AU-M188E
Figure P-1. At Cooling for AH-M098E
(1 Unit running) Figure P-1. At Cooling for AH-M098E
(2 Unit running)
PERFORMMANCE CURVES
Indoor air temp. : 27˚C
Indoor humidity : 47RH%
Indoor fan speed : Hi
5100
6800
8500
10200
11900
Cooling capacity(BTU/h)
1.5
2.0
2.5
3.0
3.5
(KW)
500
16
15
Input(W)
14
13
12
11
10
9
8
Outside air temp.(˚C)
Outlet air temp.(˚C)
30 31 32 33 34 35 36 37 38 39
Power source : 1Ø 220V, 50Hz
Indoor air temp. : 27˚C
Indoor humidity : 47RH%
Indoor fan speed : Hi
5100
6800
8500
10200
11900
Cooling capacity(BTU/h)
2000
1.5
2.0
2.5
3.0
3.5
(KW)
1000
Input(W)
Outside air temp.(˚C)
Outlet air temp.(˚C)
30 31 32 33 34 35 36 37 38 39
Power source : 1Ø 220V, 50Hz
40 40
1500
1000 1500
Cooling capacity per 1 unit
16
15
14
13
12
11
10
9
8

20
AH-M098E
AU-M188E
REFRIGERANT PIPE INSTALLATIONWORKS
Refrigerant pipe length and level difference between the indoor and outdoor units.
STANDARD PEERMISSIBLE
LENGHT PEERMISSIBLE LEVEL DIFFERENCE
PIPE SIZE
3/8" 1/4" 7m (23.0ft) 5m (16.4ft)
GAS LIQUID
The shorter the refrigerant pipe, the higher the machine capability. Keep the pipe as short as possible.