Sharp AH-S22DP2 User manual

1
AH-S22DP2
AH-S25DP2
AH-S32DP2
S3313AHS32DP2
SPLIT TYPE
ROOM AIR CONDITIONERS
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.
SERVICE MANUAL
Page
SPECIFICATIONS ............................................................................................................................................. 2
EXTERNAL DIMENSIONS ................................................................................................................................. 3
WIRING DIAGRAMS ......................................................................................................................................... 4
ELECTRICAL PARTS ......................................................................................................................................... 6
BLOCK DIAGRAM .............................................................................................................................................. 7
MICROCOMPUTER CONTROL SYSTEM ......................................................................................................... 9
FUNCTIONS .................................................................................................................................................... 15
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES ............................................................... 22
BREAKDOWN DIAGNOSIS PROCEDURE .................................................................................................... 24
REFRIGERATION CYCLE .............................................................................................................................. 27
PERFORMANCE CURVES ............................................................................................................................. 28
DISASSEMBLING PROCEDURE .................................................................................................................... 29
OPTION ........................................................................................................................................................... 36
REPLACEMENT PARTS LIST ........................................................................................................................ 38
TABLE OF CONTENTS
MODELS
SHARP CORPORATION
AH-S22DP2
AH-S25DP2
AH-S32DP2
OUTDOOR UNIT
INDOOR UNIT
AU-S22DP2
AU-S25DP2
AU-S32DP2

2
AH-S22DP2
AH-S25DP2
AH-S32DP2
SPECIFICATIONS
MODEL
I NDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
ITEMS AH-S22DP2 AU-S22DP2 AH-S25DP2 AU-S25DP2 AH-S32DP2 AU-S32DP2
Cooling capacity(Min. ~ Max.) k/W 2.0 (1.0 - 2.6) 2.1 (1.0 - 2.9) 2.7 (0.9 - 3.7)
Moisture removal Liters/h 0.7 0.8 0.9
Electrical data
Phase Single
Rated frequency Hz 60
Rated voltage V 220
Rated current A3.6 3.74.5
Rated input (Min. - Max.) W 720(400 - 1050) 730(400 - 1200) 900(330 - 1500)
Power factor %91 9091
Type Hermetically sealed rotary type
Compressor Model 2RV110N5EA04 HV237A1-S15DK
Oil charge ATMOS M60 or SUNISO 4GDID 260 cm3 SUNISO 4GSD 455 cc
Evaporator Bare tube type Grooved tube type Grooved tube type
Refrigerant system Condenser Louver Fin and Grooved tube type
Control Capillary tube
Refrigerant volume 510g 530g 750g
Noise level High dB(A) 35 43 36 43 38 48
(at cooling) Med. dB(A) 31 – 32 – 33 -
Low dB(A) 26 – 27 – 29 -
Fan system
Drive Direct drive
Air flow quantity High m3/min. 7.5 29 8.0 29 9.4 32
(at cooling) Med. m3/min. 6.5 – 7.0 – 8.0 –
Low m3/min. 5.1 – 5.2 – 6.5 –
Fan Cross flow fan Propeller fan Cross flow fan Propeller fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4" 1/2", 1/4"
Drain piping mm O.D ø 18
Others
Compressor: Thermal protector
Safety device Fan motors: Thermal fuse
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Width mm 815 780 815 780 815 780
Net dimensions Height mm 278 540 278 540 278 540
Depth mm 198 269 198 269 198 269
Net weight kg 9 31 9 33 10 38
Note: The condition of star " " marked item are 'CNS14464 B 7291 : T1'.

3
AH-S22DP2
AH-S25DP2
AH-S32DP2
EXTERNAL DIMENSIONS
Figure E-1. INDOOR UNIT
Figure E-2. OUTDOOR UNIT
269
179.5
182.5
136
81
780
70
540
310 335
540
12
37.5
4.5
58
158
16
815
278
198
Length unit (mm)
22.0
58
CRMC-A442JBE0
R03(AAA) 2PCS.
SHARP CORPORATION
INVERTER AIR CONDITIONER
18.5
175
1700
Power supply cord

4
AH-S22DP2
AH-S25DP2
AH-S32DP2
WIRING DIAGRAMS
Figure E-3. INSTALLATION DIMENSIONS
815 (unit size)
More than 50mm
E
Center of wall hole:
Leftward piping
Center of wall hole: Backward piping
Outline of indoor unit
55 95
80 55
AJ
IF
ED
D
FA
C
J
H
I
GB
21
278 (unit size)
38
Ceiling
E
Figure W-1. Wiring Diagram for AH-S22DP2/S25DP2/S32DP2

5
AH-S22DP2
AH-S25DP2
AH-S32DP2
Figure W-2. Wiring Diagram for AU-S22DP2/S25DP2
Figure W-3. Wiring Diagram for AU-S32DP2

6
AH-S22DP2
AH-S25DP2
AH-S32DP2
For Model AH-S22DP2/S25DP2/S32DP2
DESCRIPTION MODEL REMARKS
Indoor fan motor ML-A901 220 - 240V, 50Hz 220 - 230V, 60Hz
Indoor fan motor capacitor – 430V or 450V, 2µF
Transformer – Primary; AC 220 - 240V, 50/60Hz
Secondary; AC19V
WPE1 – QFS-GA053JBZZ (2.5A, 250V)
For Model AU-S22DP2/S25DP2
DESCRIPTION MODEL REMARKS
Compressor 2RV110N5EA04 3-PHASE Induction motor
Outdoor fan motor ML-A902 220 - 240V, 50Hz 220 - 230V, 60Hz
Outdoor fan motor capacitor – 430V or 450V, 1.5µF
WPE1 – QFS-GA033JBZZ(15A, 250V)
WPE2 – QFS-GA015JBE0(10A, 250V)
WPE3 – QFS-GA054JBZZ (3.15A, 250V)
For Model AU-S32DP2
DESCRIPTION MODEL REMARKS
Compressor HV237A1-S15DK 3-PHASE Induction motor
Outdoor fan motor ML-A903 220 - 240V, 50Hz 220V, 60Hz
Outdoor fan motor capacitor – 430V or 450V, 2µF
WPE1 – QFS-GA014JBE0(20A, 250V)
WPE2 – QFS-GA019JBE0(20A, 250V)
WPE3 – QFS-GA054JBZZ (3.15A, 250V)
ELECTRICAL PARTS

7
AH-S22DP2
AH-S25DP2
AH-S32DP2
BLOCK DIAGRAMS
INDOOR UNIT
AC power
CPU
2.5A
protection
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louvre motor drive circuit(upper)
Louvre motor drive circuit(lower)
Remote controller signal reception circuit
Buzzer drive circuit
CPU reset circuit
CPU oscillator circuit
Room temp. detect circuit
Heat exchanger pipe thermo circuit
Compensation circuit/ select circuit
Compensation circuit
Switchover circuit
Serial I/O circuit
Compressor relay drive circuit
LED drive circuit
Auto restart circuit
Test run circuit
Auxiliary mode
Power on circuit
Cluster generator drive circuit
Cluster generator sensor circuit
Gas sensor circuit
Dust sensor circuit
Indoor fan motor
Fan motor pulse detect
Flow direction control (louver motor upper)
Flow direction control (louver motor lower)
Wireless remote control operation
Audible operation confirmation
Room temp. thermistor
Heat exchanger pipe thermistor
Blower temperature, fan speed, model select
Outdoor ratings
Wireless, preheat
Indoor/outdoor control signal I/O
Outdoor unit power supply on/off control
LED display
Test run (forced operation)
Auxiliary mode button ON/OFF
Self diagnostics, fault diagnosis
Cluster generator
Unit-unit wiring
(AC power and
serial signals)

8
AH-S22DP2
AH-S25DP2
AH-S32DP2
CPU
15 A
protection
Outdoor fan motor
4-way valve(except for
the AU-X08BE/X10BE)
Power transistor module
Compressor
Current transformer
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temperature thermistor
LED
3.15 A
protection
10 A
protection
Power supply circuit
(built into IPM)
CPU oscillator circuit
Outdoor fan motor relay drive circuit
4-way valve relay drive circuit
(except for the AU-X08BE/X10BE)
Power transistor module drive circuit
Serial I/O circuit
CPU reset circuit
DC overcurrent detection circuit
AC overcurrent detection circuit
Compressor thermo circuit
Heat exchanger pipe thermo circuit
Outdoor temp. thermo. circuit
LED drive circuit
Test mode circuit
Filter
circuit
Smoothing
circuit
Unit-unit wiring (AC power
and serial signals)
CPU
20 A
protection
Outdoor fan motor
4-way valve(except for
the AU-X13BE)
Power transistor module
Compressor
Current transformer
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temperature thermistor
LED
3.15 A
protection
20 A
protection
Power supply circuit
(built into IPM)
CPU oscillator circuit
DC overvoltage detection circuit
Outdoor fan motor relay drive circuit
4-way valve relay drive circuit
(except fot the AU-X13BE)
Power transistor module drive circuit
Serial I/O circuit
CPU reset circuit
DC overcurrent detection circuit
AC overcurrent detection circuit
Compressor thermo circuit
Heat exchanger pipe thermo circuit
Outdoor temp. thermo. circuit
LED drive circuit
Test mode circuit
Filter
circuit
Smoothing
circuit
Unit-unit wiring (AC power
and serial signals)
OUTDOOR UNIT for AU-S22DP2/S25DP2
OUTDOOR UNIT for AU-S32DP2

9
AH-S22DP2
AH-S25DP2
AH-S32DP2
MICROCOMPUTER CONTROL SYSTEM
Figure L-1. Electronic Control Circuit Diagram for AH-S22DP2/S25DP2/S32DP2

10
AH-S22DP2
AH-S25DP2
AH-S32DP2
Figure L-2 Printed Wiring Board for AH-S22DP2/S25DP2/S32DP2
TOCLUSTERGENERATOR
FROMCLUSTERGENERATOR
FROMDUSTSENSOR
BCN201
or
BCN401
FROM
TERMINALLOF
TERMINALBOARD3
P
(BROWN)
FROM
TERMINAL1OF
TERMINALBOARD4
P
(BLACK)
TO
TERMINALNOF
TERMINALBOARD4
P
(BLUE)
TO
TERMINAL2OF
TERMINALBOARD4
P
(RED)
FROM
FANMOTOR
FROMFANMOTOR
FROMLOUVREMOTOR(TOP)
FROMLOUVREMOTOR(BOTTOM)
FROMTHERMISTOR

11
AH-S22DP2
AH-S25DP2
AH-S32DP2
Figure L-3. Electronic Control Circuit Diagram for AU-S22DP2/S25DP2
DB1
DB2
WHITE
DB~ DB~
DB~ DB~
BLUE
BLUE
ORANGE
ORANGE ORANGE L1
ORANGE
C6
RED
200V 75∝F
420V 1500∝F
C8
TB (TERMINAL BOAOD)
1
N2
1
2
3
4
BROWN
BLUE
GREEN / YELLOW
RED
FC1
T2 T1 T4 T3
L3 L4
C31
275V 1∝F
C4
250V 2200pF
1
2
3
4
C2
275V 1∝F
C3
250V 2200pF
C34
250V 2200pF
WPE1
250V
15A
C1
275V 1∝F
C33
250V 2200pF R2 R1
1/4W
510K 1/4W
510K
CT1
T5
T6
MRY1
PTC
BLUE GRAY
GRAY
BLACK
RED
C30
25V 100∝F
C11
25V 0.1∝F
C18
50V 0.1∝F
R35
510
R36
510
BLUE
NOTE 1. MARK IS TEST POINT. 2. IF NOT SPECIFIED 1/4W (RESISTOR)
YELLOW
T9 T10
T7
C10
630V 0.33∝F
R39
1/2W
270K
250V
10A
WPE2
13V
5V
R40
1/2W
270K
T8
C32
250V 2200pF
1 : Red 2-10 : White
10
9 8 7 6 5 4 3 2 1
10 987654321
CN11 (CONTROL PWB)
U
V
W
QM1 (IPM) TM-31T
FC2
RED
WHITE
BLACK
U
V
W
R33 R32 R31 R30 R29 R28
390 U
390 X
390 V
390 Y
390 W
390 Z
6 5 4 3 2 1
BCN11
CN8
TH3
(THERMISTOR for OUTDOOR TEMP.)
TH2
(THERMISTOR for HEAT-EXCHANGER)
TH1
(THERMISTOR for COMPRESSOR)
R38
6.8K F
C26
16V 10 F
5V
C22
16V 10 F
C21
16V 10 F
R21
6.8K F
R20
6.8K F
C15
10V 220∝F
R10
6.8K F
R8
2.7K F
R9
1.00K F D2
1
2
3
1
2
3
5V
C23
50V 1∝F
PST
993D
IC3
OSC1 10MHz
5V 5V
C17
10V 100∝F
F
R46
10K
R34
10K
NC NC
5V
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
P27 P26 P25 P24 P23 P22 P21 P20 P17 P16 P15 P14 P13 P12 P11 P10 P07 P06 P05 P04 P03 P02 P01 P00 V
SS
P37 P36 P35 P34 P33 P32 V
CC
V
SS
XI X0 MOD1 MOD2 RST P60 P61 P62 P63 P64 AV
SS
AVR AV
CC
AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 P40 P41 P42 P43 P44 P45 P46 P47 P30 P31
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
IC1 MB89855
C16
25V 0.1∝F
C20
10V 100∝F
5V
R41 10K
R3
2.2K
5V
LED1
C5
430V or 450V 1.5 µF
WPE3
250V
3.15A
NR2
Fan
Motor
5 3 1
CN3
T11
RY1
CNR1
(WINTER KIT)
C12
250V 4700pF
C14
50V 1000pF
C13
25V 0.01∝F
R4
D1
3.3K
R6
2.7K
R5
5.6K R7
4.7K
PC817X7
PC1
PC2
PC853H
1
23
4
1 23
4
5V
R11
2W 1.0K
R12
2W 1.0K
R13
2W 1.0K
R17
10K
R16
10K
13V
RY1
D6
Q1
MRY1
D8
Q3
5V
NR1 SA1
TEMPERATURE FUSE 103˚C
CN9
JP1
2 1

12
AH-S22DP2
AH-S25DP2
AH-S32DP2
Figure L-4. Electronic Control Circuit Diagram for AU-S32DP2
DB1
DB2
WHITE
DB~ DB~
DB~ DB~
BLUE
BLUE
ORANGE
ORANGE ORANGE L1
ORANGE
C6
RED
200V 90µF
400V 2000µF
C8
TB (TERMINAL BOARD)
TEMPERATURE FUSE 103˚C
21
N
1
2
3
4
BLUE
OWN
RED
FC1
T2 T1 T4 T3
L3 L4
C31
275V 1∝F
C4
250V 2200pF
1
2
3
4
C2
275V 1∝F
C3
250V 2200pF
C34
250V 2200pF
WPE1
250V
20A
C1
275V 1∝F
C33
250V 2200pF R2 R1
1/4W
510K 1/4W
510K
CT1
T5
T6
MRY1
PTC
BLUE GRAY
GRAY
BLACK
RED
C30
25V 100∝F
C11
25V 0.1∝F
C18
50V 0.1∝F
R35
510
R36
510
BLUE
NOTE 1. MARK IS TEST POINT. 2. IF NOT SPECIFIED 1/4W (RESISTOR)
YELLOW
T9 T10
T7
C10
630V 0.33∝F
R39
1/2W
270K
250V
20A
WPE2
13V
5V
R40
1/2W
270K
T8
C32
250V 2200pF
1 : Red 2-10 : White
10
9 8 7 6 5 4 3 2 1
10 987654321
CN11 (CONTROL PWB)
U
V
W
QM1 (IPM) TM-35
FC2
RED
WHITE
BLACK
U
V
W
R33 R32 R31 R30 R29 R28
430 U
430 X
430 V
430 Y
430 W
430 Z
6 5 4 3 2 1
BCN11
CN8
TH3
(THERMISTOR for OUTDOOR TEMP.)
TH2
(THERMISTOR for HEAT-EXCHANGER)
TH1
(THERMISTOR for COMPRESSOR)
R38
6.8K F
C26
16V 10 F
5V
C22
16V 10 F
C21
16V 10 F
R21
6.8K F
R20
6.8K F
C15
10V 220∝F
R10
6.8K F
R8
2.7K F
R9
1.00K F D2
1
2
3
1
2
3
5V
C23
50V 1∝F
PST
993D
IC3
OSC1 10MHz
5V 5V
C17
10V 100∝F
F
R46
10K
R34
10K
NC NC
5V
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
P27 P26 P25 P24 P23 P22 P21 P20 P17 P16 P15 P14 P13 P12 P11 P10 P07 P06 P05 P04 P03 P02 P01 P00 V
SS
P37 P36 P35 P34 P33 P32 V
CC
V
SS
XI X0 MOD1 MOD2 RST P60 P61 P62 P63 P64 AV
SS
AVR AV
CC
AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 P40 P41 P42 P43 P44 P45 P46 P47 P30 P31
NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
IC1 MB89855
C16
25V 0.1∝F
C20
10V 100∝F
5V
R41 10K
R3
2.2K
5V
LED1
C5
430V or 450V 2.0µF
WPE3
250V
3.15A
NR2
Fan
Motor
5 3 1
CN3
T11
RY1
CNR1
(WINTER KIT)
C12
250V 4700pF
C14
50V 1000pF
C13
25V 0.01∝F
R4
D1
3.3K
R6
2.7K
R5
5.6K R7
4.7K
PC817X7
PC1
PC2
PC853H
1
23
4
1 23
4
5V
R11
2W 1.0K
R12
2W 1.0K
R13
2W 1.0K
R17
10K
R16
10K
13V
RY1
D6
Q1
MRY1
D8
Q3
5V
NR1 SA1
CN9
JP1
2
1

13
AH-S22DP2
AH-S25DP2
AH-S32DP2
T5(DB1~)
(BLACK)
C5
NR2
WPE3
R2 R1
CT1
3A 250V
RY1
CNR1
T11
(GRAY)
T10
T9
WPE2 20A 250V
(BLUE)
(YELLOW)
IPM
R33
R32
R31
R30
R29
R28
C10
R40
R39
JP1
R46
C33
Q2
C1
SA1
D7
JP2
JP17
JP19
JP18
(FAN MOTOR)
CN3
15
IPM
(RED)
(BLUE)
T7
CB
T8
CB
JP16
JP20
C17
R35
R36
JP25
C18
C23
R20
C21
R13
R12 R11
C22
C26
R21
R38
F
JP21
R10
JP22
IC3
C15 OSC1
R4
C12
C31
D1
R16
C13
R17 JP12
R7 C14
JP13
R6
R5
R5
PC2
PC1
C3
3
4
1
2
2
1
4
3
L3
C4
L4
C34
C2
NR1
WPE1
25A 250V
OUT
32
33
32
IC1
1
CN8
(THERMISTOR)
16
64
C20
LED1
R59
D8
C30
E
C
B
B
C
E
B
C
E
Q4
R3
R41
C12
JP7
JP6 R9
D2
R8
JP3
JP5
JP4
R60
121
BCN11 (IPM)
JP8
JP9
JP10
JP11
C16
Q3
Cool/40Hz
QPWBFB399JBZZ
DPWBFA
JBKZ
0
MRY1
PTC
(BLUE)
IN
(GRAY)
(DB1~)
(RED)
(BLUE)
(BROWN)
(GREEN/
YELLOW)
T3
T2
2
N
1
T1
T4
DIP
T6(GRAY)
PTC
R34
C32
JP14
JP15
GND
13V
5V
TERMINAL
FUSE
FROM
FAN MOTOR
FROM
POWER TRANSISTOR
MODULE QM1 " "
FROM
POWER TRANSISTOR
MODULE QM1 " "
FROM
ELECTLYTIC
CAPACITOR
C8 " "
FROM
ELECTLYTIC
CAPACITOR
C8 " "
FROM
THERMISTOR
FROM
TERMINAL
BOARD " N "
FROM
TERMINAL
BOARD " 2 "
FROM
TERMINAL
BOARD " 1 "
FROM
CONTROL BOX
FROM
DIODE BRIDGE
DB1 " ~ "
FROM
DIODE BRIDGE
DB1 " ~ "
FROM
PTC1
TO
TRANSISTOR
MODULE QM1
SHORT WIRE
T5(DB1~)
(BLACK)
C5
NR2
WPE3
R2 R1
CT1
3A 250V
RY1
CNR1
WINTER KIT
(OPTION)
T11
(GRAY)
T10
T9
WPE2 10A 250V
(BLUE)
(YELLOW)
IPM
13V
R33
R32
R31
R30
R29
R28
BCN11 (IPM)
JP2
C32
C10
R40
R39
JP20
JP1
R46
R34 JP14
JP15 JP16 JP12
LED1
JP10
Q3
C33
Q1
C1
SA1
D6
JP9 JP8
JP7 JP4
JP6 JP5
JP3
IC2
C11
C16
JP21
JP17 JP18
R41
(FAN MOTOR)
CN3
15
10 12
E&J
V&W2
IPM
(RED)
(BLUE)
T7
CB
T8
CB
JP22
JP19
C17
R35
JP25
C18
C23
R20
C21
R13
R12 R11
C22
C26
R21
R38
R36
F
JP23
JP24
CN912
TERMINAL
FUSE
ONLY
W2
IC3
OSC1
R4
C12
C31
D1
R16
C13
R17
JP16
C14
R1
R6
R5
PC2
PC1
C3
3
4
1
2
2
1
4
3
L3
C4
L4
C34
C2
NR1
WPE1
15A 250V
OUT
32
33
IC1
1
CN8
(THERMISTOR)
16
64
R3
C15
R10
D8
JP11
C30 R8
D2
R9
E
C
B
E
C
B
C20 BCE
Q4
Cool/40Hz
QPWBFB397JBZZ
DPWBFA JBKZ
0
MRY1
PTC
(BLUE)
IN
(GRAY)
(DB1~) (RED)
(BLUE)
(BROWN)
(GREEN/
YELLOW)
T3
T2
2
N
1
T1
T4
DIP
T6(GRAY)
PTC
5V
GND
FROM
FAN MOTOR
TO
POWER TRANSISTOR
MODULE QM1
FROM
POWER TRANSISTOR
MODULE QM1 " "
FROM
POWER TRANSISTOR
MODULE QM1 " "
FROM
ELECTLYTIC
CAPACITOR
C8 " "
FROM
ELECTLYTIC
CAPACITOR
C8 " "
FROM
THERMISTOR
SHORT WIRE
FROM
TERMINAL
BOARD " N "
FROM
TERMINAL
BOARD " 2 "
FROM
TERMINAL
BOARD " 1 "
FROM
CONTROL BOX
FROM
DIODE BRIDGE
DB1 " ~ "
FROM
DIODE BRIDGE
DB1 " ~ "
FROM
PTC1
Figure L-5 Printed Wiring Board for AU-S22DP2/S25DP2
Figure L-6 Printed Wiring Board for AU-S32DP2

14
AH-S22DP2
AH-S25DP2
AH-S32DP2
FUNCTIONS
1. INDOOR UNIT
1-1 Temperature Adjustment
(1) Cooling
When the room temperature is higher than the preset
temperature by 2˚Cor more, the unit runs at the
maximum operation frequency until the temperature
comes down to the preset temperature.
When reaching the preset temperature, the unit
runs at the frequency calculated by the fuzzy
operation and switches to the normal control.
(2) Dry
After operation begins, 2 minutes of the room
temperature is stored in memory, and that becomes
the set value.
1-2 Indoor fan control
The fan speed can be selected from "Auto", "Soft",
"Low",and "HIgh".When "Soft", "Low" or "HIgh" is
selected, the fanspeed is constant regardless of the
room temperature.When "Auto" is selected, the fan
speed automatically changes between "Soft" and
"HIgh" depending on the difference
between the room and preset temperature.
Control for indoor freezing prevention
If the temperature of the indoor heat exchanger stays
below approximately 1˚C for four minutes during
cooling or dry, this control stops the compressor.
Over 3˚C the compressor will run again.
1-3 Automatic operation
The operating mode and temperature setting are
determined by the room temperature and the external
air temperature.
The operating mode will changeover automatically
with the following condition.
When the set temperature is adjusted within the
range of ±2˚C by the remote control's key. ( ),
Cooling
(24˚C)
(Room temperature
- 2°C)
Cooling
(25˚C)
Cooling
(26˚C)
(Dry)
Room
temperature
(˚C)
29
28 34
Outdoor
temperature (°C)
Cooling
Set temperature
By fuzzy computing
Set the shift up time
Final ( Cooling setting + 1°C)
Dry Same as above
(Final setting + 1°C)
1°C
Stops
Timer set time
1
hour
Timer operation starts
Room
temperature
the changeover judgement room temp. will also be
shifted within the range of ±2˚C.
1-4 ON-timer
The ON-timer is set by pressing the ON-timer button.
In order to attain the set temperature at the set time,
the operation starting time is corrected by fuzzy
computing one hour before the set time.
1-5 OFF-timer
The OFF-timer is set by pressing the OFF-timer
button. Operation is as follows:
*During Cooling / Dry
1-6 Swing louvre
The louvre is moved by a stepping motor to perform
swing and fixing in the set position.
If the "FLOW DIRECTION" button is prossed during
swing, it will stop. If the "FLOW DIRECTION" button
is pressed while it is stopped, it will swing.
The vertical adjustment louvre will change its angle
continuously.
Press the SWING button again when the vertical
adjustment louvre is at the desired position.
•The louvre will stop moving within the range shown
in the diagram.
• The adjusted position will be memorized and will
be automatically set to the same position when
operated the next time.
1-7 Restart control
Once the compressor stops, this control prevents it
from starting again for 3 minutes. It also prevents
starting for 80 seconds immediately following plugging
into the power outlet.
1-8 One-hour operation
If this button is pressed when operation is stopped,
operation will begin and then stop after 1 hour. If
pressed when it is operating, will stop after one hour.
1-9 Full power operation
Immediately begins cooling or heating at maximum
power and air flow.
(During cooling) Operates at setting of 18°C.
COOL and DRY modes FAN ONLY mode
The adjustment range
is narrower the SWING
range in order to pre-
vent condensation from
dripping.
The range is wide so the
air flow can be directed
toward the floor.
Adjustment range

15
AH-S22DP2
AH-S25DP2
AH-S32DP2
ON
OFF
ON
ON
Air conditioner
operation
Compressor
relay
100 sec.
ON
OFF
OFF
Air conditioner
operation
Compressor
relay
100 sec.
ON
ON
ON
OFF
ON
OFF
Air conditioner
operation
Compressor
relay
100 sec. 80 sec.
ON
1-10 Power ON start
If a jumper wire is inserted into the place indicated
JP99 on the indoor control board, and the power
plug is inserted. Cooling mode will be automatically
determined by the room temperature sensor on the
main unit, and operation will begin.
1-11 Compressor relay
(1) It is ON during operation, and when operation is
stopped, goes OFF after a delay of 100 seconds
(not immediately).
Power select Cooling
HAH-S32DP2 8.5 A
L 6.7 A
(2) The minimum OFF time of the relay is 80 seconds.
It will not go ON again before 80 seconds elapses.
(3) If air conditioner operation is turned on again
during the 100 second delay before the
compressor relay goes off, the compressor relay
will stay on.
1-12 Power selector [AH-S32DP2]
Operation power "H " (High) or "L" (Low) can be
selected by switching the POWER SELECTOR
slide switch located above the AUX. button.
1-13 Auto Restart
When power failure occures, after power is
recovered, the unit will automatically restart in the
same setting which were active before the power
failure.
Operating mode (Cool, Dry)
Temperature adjustment (within 2˚C range)
automatic operation
Temperature setting
Fan setting
Air flow direction
Power ON/OFF
Automatic operation mode setting
Swing louver
Setting not memorized
Timer setting
Full power setting
1-14 Indoor/outdoor temperature display
Every time the Temperature check button is
pressed on the remote control, the display changes
in the order of indoor temperature outdoor
temperature no display. The temperature is
displayed on the temperature indicator on the main
unit to be referred to for energy saving.
(When the unit is not running, the display changes
between indoor temperature and no display.)Indoor
temperature is the temperature of the suction air
measured by the room thermistor, and outdoor
temperature is that measured by the outdoor
temperature thermistor. When indoor temperature
is displayed, the indoor LED on the main unit is lit,
and when outdoor temperature is displayed, the
outdoor LED is lit. For 90 seconds after the
operation starts, - - is displayed instead of the
actual outdoor temperature since it is still being
measured.Because of the effect of the exchanger,
the unit cannot confirm the exact indoor
temperature right after the operation is terminated.
Therefore, for one hour since the operation is
stopped, the indoor temperature immediately before
the operation is stopped is displayed. After over
one hour since it is stopped, the unit displays the
actual room temperature at that point.
1-15 Error diagnostic display
(a) Indoor unit
(1) When an error is detected, all relays are
turned off. At the same time, the details of the
error are displayed by flashing the number
corresponding to the type of the error. The
details can also be displayed by pressing down
the emergency operation switch for 5 seconds
or more in the state of operation stop.However,
if the operation is continued only in the serial
open state and the state remains unchanged
after that, the main relay is turned off in 8
minutes. In the serial short state, the error is
not displayed and the operation is continued. If
the unit stays in the same state, the main relay
is turned off in 8 minutes. Although the error is
not displayed, it is memorized and can be
displayed when it is recalled.
(2) If the operation is stopped and the emergency
operation button is pressed down for 5 seconds
or more, the self-diagnosis memory can be
recalled.
(3) Details of self-diagnosis (error mode) are
informed by the flashing number as well as the
lighting pattern of the operation lamp which
flashes with the timer lamp.(For details, refer to
Error diagnostic method.)

16
AH-S22DP2
AH-S25DP2
AH-S32DP2
2. DESCRIPTION OF ODOR SENSOR
(1) Outline of the odor sensor
The odor sensor is used to cluster display during
operation. This odor sensor sensitively reacts to
the various air contaminations such as a volatile
organic solvent, fragrant materials and tabacco
burning gas. In the figure on the right, RS
indicates a sensor resistance, RL a load
resistance, VRS a sensor output voltage, and
VC a sensor power supply voltage. Their relation
is expressed in the following formula.
When the air contamination level increases, the
value of the sensor resistance RS drops, which
also lowers the value of the sensor output voltage.
While detecting contamination, the microcomputer
outputs the following pulse to the transistor Q8,
which drives the heater with the built-in odor sensor
using the pulse.
Basic circuit
Microcomputer
output
Microcomputer
input
Odor sensor
3
1
2
R
RL
C31
R41
R65
R64
R52
C32
Q7
Q8
R66
5V
S
V
RS
V
C
VRS = C
RV S
RL + RS
512(µs)
12.8(ms)

17
AH-S22DP2
AH-S25DP2
AH-S32DP2
High (85%)
Standard (80%)
Low (75%)
15kΩ
15kΩ13kΩ
13kΩ
R7 R6
P.W.B.
What to Odor Sensor react to ?
Odor Sensor also may react to vapour of insecticides, cosmetics, alcohol, hemicals and the like, and to extreme change
of temperature / humidity.
(2) Detection of the air contamination by the fluctuation ratio of sensor resistance
The output voltage from the odor sensor is input into the microcomputer to detect the air contamination.
This method detects the air contamination by converting sensor output voltage into the sensor resistance value
and calculating its fluctuation ratio per unit of time. Therefore, the sensor determines that the air is contaminated
when the sensor resistance value drops abruptly.
Clean
Contaminated
Reference value (R0) Smoking start
Determined value K
New reference value (R0)
Additional operation
1 min.
Time
Determined
clean
Determined
contaminated
(3) Operation of the microcomputer
When the air conditioner is power on, the microcomputer starts operating and, after 1 minute, starts detecting the air
contamination.
(4) Switching sensitivity of the odor sensor
The sensitivity of the odor sensor can be adjusted when the sensor is too
responsive or unresponsive.
It is set as standard at the factory.
Sensitivity is divided into three levels: high, standard, and low.
The contamination is detected when the sensor resistance drops below
following percentages compared to the reference value in a clean state.
(This is equal to the description of the resistance of the allergen sensor.)
3. DESCRIPTION OF THE OPTIAL ALLERGEN SENSOR
(1) Outline of the optical allergen sensor
As with the odor sensor, this sensor is used to display cluster during the operation. The pulse signal is output
from the microcomputer into the basic circuit show in the figure below, and the sensor signal is input into the
microcomputer according to the size or amount of the dust.
Output
Output
R39
1
2
3
4
5
6
12V
C29
C30
Q6
R38
R40
R72
Input
Input
60Hz : 16.6 ms
Basic circuit
Allergen
sensor

18
AH-S22DP2
AH-S25DP2
AH-S32DP2
Clean
Contaminated
Determined
clean
Determined
contaminated
Reference
value
High (2 sec.)
Med (3 sec.)
Low (4 sec.)
15kΩ
15kΩ13kΩ
13kΩ
R7 R6
(2) Dust detection by using the sensor
The output voltage from the optical allergen sensor is input into the indoor units microcomputer to detect the air
contamination (dust). This method inputs the sensor voltage per unit of time and calculates the relative fluctuation
to determine whether the air is contaminated or not.
(3) Operation of the indoor unit's microcomputer
As with the odor sensor, the microcomputer starts constantly detecting the air contamination level after 1 minute of
the operation start.
(4) Switching sensitivity of the optical allergen sensor
The sensitivity can be adjusted. However, both sensors will be adjusted
to the same level.
The air contamination is detected in the following seconds at each sensor
level.
ECO
ECO
TIPS ABOUT INDICATOR PANEL
The indicator panel will change each time you press
the DISPLAY button in the following manner.
The room temperature and
POWER MONITOR are displayed.
The outdoor temperature and
POWER MONITOR are displayed.
No display.
POWER MONITOR
When the room temperature or the outdoor temperature is displayed, the POWER MONITOR
will light up in 4 levels for COOL mode (3 levels for DRY mode), to indicate the
operation power. When the air conditioner is operating at maximum power in the COOL
mode, "Power" will light and "Eco" will turn off on the indicator panel.
NOTES:
•The displayed temperatures are rough estimates and may vary from the actual temperatures.
•Temperature display ranges
Room temperature: 0°C ~ 40°C ( is displayed when less than 0°C and when higher
than 40°C)
Outdoor temperature: -9°C ~ 45°C ( is displayed when less than -9°C and when higher
than 45°C)
•is displayed during the first 90 seconds of operation while the temperatures are being
detected.
•Only the room temperature can be displayed for 5 seconds when the unit is not in operation.
Room Temp.
Lamp Temperature
Indicator
POWER MONITOR
Outdoor Temp.
Lamp

19
AH-S22DP2
AH-S25DP2
AH-S32DP2
• The remote control displays " ".
•The red OPERATION lamp ( ) and the blue
PLASMACLUSTER lamp on the unit will light up.
• The unit will stop operation after forty minutes.
•The remaining operation time will be indicated on
the TEMPERATURE INDICATOR of the indoor
unit in minute decrements.
TO CANCEL
Press the SELF CLEAN button.
Or, turn the unit off by pressing the ON/OFF button.
•The red OPERATION lamp ( ),the blue
PLASMACLUSTER lamp and the TEMPERATURE
INDICATOR on the unit will turn off.
1During operation, press the PLASMACLUSTER
button to select the mode.
You can choose PLASMA CLUSTER AUTO OPERATION, AIR CLEAN OPERATION or
REFRESHING OPERATION
PLASMACLUSTER AUTO AIR CLEAN REFRESHING CANCEL
•In the AIR CLEAN operation, the blue
PLASMACLUSTER lamp on the unit will light up.
•In the REFRESHING operation, the green
PLASMACLUSTER lamp on the unit will light up.
TO CANCEL
Press the PLASMACLUSTER button until
PLASMACLUSTER symbol on the remote control
display goes off.
•The PLASMACLUSTER lamp on the unit will turn
off.
NOTE:
•You cannot set the temperature, fan speed, air flow direction or timer setting during the
SELF CLEAN operation.
NOTES:
•Setting of the PLASMACLUSTER operation will be memorized and will operate in the
same mode, the next time you turn on the air conditioner.
• To turn off the PLASMACLUSTER lamp, press the DISPLAY button.
PLASMA CLUSTER OPERATION
SELF CLEAN OPERATION
Press the SELF CLEAN button when the unit is not
operating.
1
1
1
1h

20
AH-S22DP2
AH-S25DP2
AH-S32DP2
The ionizer inside the air conditioner will release cluster ions, which are
collective mass of positive and negative ions, into the room.
The cluster ions reduce airborne mold fungus and deodorize/decompose odor-
causing molecules.
AIR CLEAN OPERATION
Cluster ions released into the air will reduce airborne mold fungus and deodorize/decompose
odor-causing molecules.
REFRESHING OPERATION
It is said that plenty of negative ions exist in places such as waterfalls or forests in natural
environment. In this operation mode, negative inos will be released in an increased rate, in order
to bring the room air close to this condition.
PLASMACLUSTER AUTO OPERATION
Dust sensor and odor sensor will detect foul air in the room.
Air Clean Operation will be performed for one minute after the air conditioner is operated to
detect foul air.
Air Clean Operation and Refreshing Operation will be selected and be performed automatically
depending on the air foul degree.
Air Clean Operation will be performed when the air is detected to be foul, Refreshing Operation
will be performed when the air is clean.
SELF CLEAN OPERATION
Plasmacluster Operation will be performed with FAN mode, in order to reduce the
growth of mold fungus, and dry inside of the air conditioner unit.
Utilize the operation at seasonal change over terms.
Mold fungus already grown can not be eliminated by this operation.
TIPS ABOUT DUST SENSOR AND ODOR SENSOR
What does Dust Sensor react to?
•Dust sensor reacts to mold fungus, plants/flowers pollen, dead ticks, dust, tobacco smoke etc.
What does Odor Sensor react to?
• Odor Sensor reacts to tobacco smoke, motor exhaust, odor emitted from animals, etc.
Dust and Odor Sensor also may react to vapour of insecticides, cosmetics, alcohol, chemicals
and the like, and to extreme change of temperature/humidity.
Ionizer
Cluster ions
Mold fungus
Odor
TIP ABOUT PLASMACLUSTER OPERATION