Sharp AH-X108E User manual

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
1
SHARP CORPORATION
Page
SPECIFICATIONS .......................................................................................................................................... 2
EXTERNAL DIMENSIONS............................................................................................................................... 4
WIRING DIAGRAMS....................................................................................................................................... 5
ELECTRICAL PARTS .................................................................................................................................... 10
BLOCK DIAGRAM ......................................................................................................................................... 12
MICROCOMPUTER CONTROL SYSTEM.................................................................................................... 14
FUNCTIONS ................................................................................................................................................. 25
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES ............................................................. 30
BREAKDOWN DIAGNOSIS PROCEDURE .................................................................................................. 32
REFRIGERATION CYCLE........................................................................................................................... 34
PERFORMANCE CURVES .......................................................................................................................... 36
DISASSEMBLING PROCEDURE .................................................................................................................. 38
OPTION ......................................................................................................................................................... 45
REPLACEMENT PARTS LIST....................................................................................................................... 46
TABLE OF CONTENTS
S6831AYX138E/
SERVICE MANUAL
INDOOR UNIT
AH-X108E AY-X108E
AH-X138E AY-X138E
AU-X108E AE-X108E
AU-X138E AE-X138E
OUTDOOR UNIT
Intheinterestsofuser-safety(Requiredbysafetyregulationsinsome
countries) thesetshouldberestoredtoitsoriginalconditionandonly
parts identical to those specified should be used.
MODELS
SPLITTYPE
ROOM AIR CONDITIONERS

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
2
SPECIFICATIONS
Models INDOOR UNIT OUTDOOR UNIT
AH-X108E AH-X138E AU-X108E AU-X138E
Cooling capacity kW 2.8 (0.9 3.2) 3.6 (0.9 3.9) 2.8 (0.9 3.2) 3.6 (0.9 3.9)
Moisture removal Liters/h 1.1 1.3 1.1 1.3
Electrical data
Phase - Single
Rared frequency Hz 50
Rated voltage range V 198 to 264
Rated voltage V 220 - 240
Rated current A 4.5 - 4.1 6.2 - 5.9 4.5 - 4.1 6.2 - 5.9
Rated input W 930 1220 930 1220
Power factor % 94 - 95 89 - 86 94 - 95 89 - 86
Compressor Type Hermetically sealed rotary type
Model HV237A1-S15DK
Oil charge 455cc(SUNISO 4GSD)
Refrigerant Evaporator Grooved tube type
system Condenser Corrugate Fin and Grooved tube type
Control Capillary tube
Refrigerant volume 850g 870g 850g 870g
Noise level High dB(A) 39 42 43 48
(at cooling) Med. dB(A) 33 36 - -
Low dB(A) 28 30 - -
Fan system
Drive Direct drive
Air flow High m3/min. 10.0 11.0 25.0 26.0
quantity Med. m3/min. 6.6 7.4 - -
(at cooling) Low m3/min. 5.1 5.9 - -
Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4" 1/2", 1/4" 3/8", 1/4" 1/2", 1/4"
Drain pipng mm (Inches) O.D ø 18 (45/64)
Others
Safety device Compressor: Thermal protector
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filter Polypropylene net (Washable)
Net Width mm 790 (31-3/32) 728 (28-21/32)
dimensions Height mm 270 (10-5/8) 530 (20-7/8)
Depth mm 188 (7-13/32) 250 (9-27/32)
Net weight kg 9 9 32 39
Note: The condition of star(
) marked item are 'IEC 378'.

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
3
Models INDOOR UNIT OUTDOOR UNIT
AY-X108E AY-X138E AE-X108E AE-X138E
Cooling capacity kW 2.8 (0.9 3.2) 3.6 (0.9 3.9) 2.8 (0.9 3.2) 3.6 (0.9 3.9)
Heat pump kW 3.7 (0.9 5.0) 4.8 (1.0 6.2) 3.7 (0.9 5.0) 4.8 (1.0 6.2)
Heating capacity
Moisture removal Liters/h 1.1 1.3 1.1 1.3
Electrical data
Phase - Single
Rared frequency Hz 50
Rated voltage range V 198 to 264
Rated voltage V 220 - 240
Rated current Cool A 4.5 - 4.1 6.2 - 5.9 4.5 - 4.1 6.2 - 5.9
Heat A 5.0 - 4.6 7.4 - 6.9 5.0 - 4.6 7.4 - 6.9
Rated input Cool W 930 1220 930 1220
Heat W 1050 1500 1050 1500
Power factor Cool % 94 - 95 89 - 86 94 - 95 89 - 86
Heat % 95 - 95 92 - 91 95 - 95 92 - 91
Compressor Type Hermetically sealed rotary type
Model HV237A1-S15DK
Oil charge 455cc(SUNISO 4GSD)
Refrigerant Evaporator Grooved tube type
system Condenser Corrugate Fin and Grooved tube type
Control Capillary tube
Refrigerant volume 850g 870g 850g 870g
De-Ice system Micro computer controled reverse system
Noise level High dB(A) 39 42 43 48
(at cooling) Med. dB(A) 33 36 - -
Low dB(A) 28 30 - -
Fan system
Drive Direct drive
Air flow High m3/min. 10.0 11.0 25.0 26.0
quantity Med. m3/min. 6.6 7.4 - -
(at cooling) Low m3/min. 5.1 5.9 - -
Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4" 1/2", 1/4" 3/8", 1/4" 1/2", 1/4"
Drain pipng mm (Inches) O.D ø 18 (45/64)
Others
Safety device Compressor: Thermal protector
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filter Polypropylene net (Washable)
Net Width mm 790 (31-3/32) 728 (28-21/32)
dimensions Height mm 270 (10-5/8) 530 (20-7/8)
Depth mm 188 (7-13/32) 250 (9-27/32)
Net weight kg 9 9 32 39
Note: The condition of star(
) marked item are 'IEC 378'.

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
4
Figure E-1. INDOOR UNIT
Figure E-2. OUTDOOR UNIT
790 188
270
800
58 18
19.5
182
Length unit (mm)
EXTERNAL DIMENSIONS
250
280
304
525
10.5
38
58
5
76.5
141.5
515
530
15
728
98 60
59.5
69.5
Length unit (mm)

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
5
Figure W-1. Wiring Diagram for AH-X108E, AH-X138E, AY-X108E and AY-X138E
WIRING DIAGRAMS
11
N
L
N
2
N
2
OUTDOOR UNITINDOOR UNIT
CONTROL BOARD UNIT
BLACK
RED
RED
TERMINAL BOARDTERMINAL BOARDTERMINAL BOARD
GREEN-YELLOW
Blink steps Malfunction part or abnormal condition
Short circuit of the outdoor thermistor Overheat of the compressor Abnormal AC current Compressor lock Open circuit of the outdoor thermistor Power module(PM1) abnormality AC overcurrent 4 way valve abnormality Open circuit of serial signal line Short circuit of serial signal line Abnomal fan motor of indoor unit
: LED blink
<LED yellow blinking> LED yellow blinks 5 times in 10 seconds.
< Indication of the abnormal condition > LED yellow and LED red indicate automatically, if the set is in abnormal condition.
<LED red blinking> abnormal condition is indicated by the blinking pattern of LED red.
BLUE
BROWN
YELLOW
ORANGE
BROWN RY1
In Out
CN3NR1 CN4 CN1 CN2
CN7 CN8
TR
C1
SSR1
A A
S
M
C
BLUE BLUE
BLUE
BLACK
4 3 2 1
POWER SUPPLY SINGLE PHASE
LOUVER MOTOR
TH1 ROOM TEMP THERMISTOR
SERIAL SIGNAL CIRCUIT
PIPE TEMP THERMISTOR TH2
RECEIVER BOARD UNIT
FAN MOTOR CAPACITOR 430V 1.5µF
R.P.M. SIGNAL
DISPLAY BOARD UNIT
FUSE 250V 2.5A T
FAN MOTOR
FAN MOTOR COMPRESSOR
CONTROL BOARD UNIT
UNIT TO UNIT CORD
531
LED INDICATION FOR SELF-DIAGNOSIS
x x x x x x x
x x x
x x x x x
x x x x x x x xx x
xx
x x
x : LED no blink
x x x x x

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
6
N
1
N
2
1
14
3 2 1
3 5
N
2
L
TERMINAL BOARD
LED BLINKING
NO
1 2 3 4
LED indication pattern Mulfunction part or abnormal condition
LED turns on Slow flashing ( 1 time for 2 seconds)
Example : NO.2 Compressor lock
on off 1.0sec 1.0sec 1.0sec0.6sec 0.6sec 0.6sec
Quick flashing ( 3 times for 2 seconds)
TERMINAL BOARD OUTDOOR UNIT
TERMINAL BOARD
G(Y)
G(Y)
BR BL RE
RE
BK BL OR
THERMISTOR COMP. TEMP. TH1
CN1
WH
BK
RE
BL
YE
BL
FC1
YE
U V W
U(R) V(S) W(C )
COMPRESSOR
POWER TRANSISTOR MODULE (PM1)
TH2
RE
CONTROL BOARD UNIT
T1
T4
The voltage is high at C8, C9 (electronic capacitors) on outdoor unit. For mentenance discharge at C8, C9 to prevent electric shock. In case that WPE2 (protecter) has been fused, the voltage is kept high at C8, C9.
YE : YELLOW GN : GREEN
BK : BLACK BL : BLUE BR : BROWN GR : GRAY
RE : RED WH : WHITE OR : ORANGE G(Y) : GREEN YELLOW
CAUTION
T5
T7
BR OR
RE WH
YE
T12
T6
T8 T14
T13
L1
L2
REACTOR
REACTOR
RE
GR
C7A C6A
D4
D5 C8 C9
T9
T10
C6B
C7B
80µF 400V 235µF 250V
470µF 400V 470µF
400V
10A 250V
235µF 250V
80µF 400V
GR
WH
BL
BK
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
BL
T2 C11 C2
C3
C1
C5
CT1
NR2
RY2
CNR2
CN3
CN6
C4
L3 L4
SA1 NR1
T11 T3
WPE1
WPE2
WPE3 3A 250V
13A 250V
FAN MOTOR
FAN MOTOR CAPACITOR 2µF 430V
THERMISTOR PIPE TEMP.
UNIT TO UNIT CORD
SINGLE PHASE 220-240V 50/60Hz
LED INDICATION OF SELF-DIAGNOSIS ON OUTDOOR UNIT
FAN MOTOR
CONTROL BOARD UNIT
INDOOR UNIT
+
–
+
–
+ +
+
–
+
–
– –
Normal Abnormal signal line Compressor lock Overheat of the compressor Power module (PM1) abnormality
NO
6 5 7 8
LED indication pattern Mulfunction part or abnormal condition
Short circuit of the thermistor Open circuit of the thermistor AC abnormal current AC overcurrent
NO.3 Overheat of the compressor
1.0sec 1.0sec0.6sec 0.6sec 0.6sec0.6sec
Figure W-2. Wiring Diagram for AU-X108E

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
7
N
1
N
2
1
14
3 2 1
3 5
N
2
L
TERMINAL BOARD
LED BLINKING
NO
1 2 3 4
LED indication pattern Mulfunction part or abnormal condition
LED turns on Slow flashing ( 1 time for 2 seconds)
Example : NO.2 Compressor lock
on off 1.0sec 1.0sec 1.0sec0.6sec 0.6sec 0.6sec
Quick flashing ( 3 times for 2 seconds)
TERMINAL BOARD OUTDOOR UNIT
TERMINAL BOARD
G(Y)
G(Y)
BR BL RE
RE
BK BL OR
THERMISTOR COMP. TEMP. TH1
CN1
WH
BK
RE
BL
YE
BL
FC1
YE
U V W
U(R) V(S) W(C )
COMPRESSOR
POWER TRANSISTOR MODULE (PM1)
TH2
RE
CONTROL BOARD UNIT
T1
T4
The voltage is high at C8, C9 (electronic capacitors) on outdoor unit. For mentenance discharge at C8, C9 to prevent electric shock. In case that WPE2 (protecter) has been fused, the voltage is kept high at C8, C9.
YE : YELLOW GN : GREEN
BK : BLACK BL : BLUE BR : BROWN GR : GRAY
RE : RED WH : WHITE OR : ORANGE G(Y) : GREEN YELLOW
CAUTION
T5 BR OR
RE RE
BL WH
RE
WH
C6
BK
C7A C7B C8 C9
C24
150µF 400V 150µF 400V
2000µF 400V 2000µF 400V
50µF 200V
4700µF 63V
L1
L2
4
123
MRY1
YE
YE
GR
BR
YE T9
T7
T8 T10
20A 250V
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
GR
BL
PTC1
REACTOR
REACTOR
GR BL BL
GR
BL
T2 C11 C2
C3
C1
C5
CT1
NR2
RY2
CNR2
CN3
CN8
C4
L3 L4
SA1 NR1
T11 T3
WPE1
WPE2
WPE3 3A 250V
20A 250V
FAN MOTOR
FAN MOTOR CAPACITOR 2µF 430V
THERMISTOR PIPE TEMP.
UNIT TO UNIT CORD
SINGLE PHASE 220-240V 50/60Hz
LED INDICATION OF SELF-DIAGNOSIS ON OUTDOOR UNIT
FAN MOTOR
CONTROL BOARD UNIT
INDOOR UNIT
Normal Abnormal signal line Compressor lock Overheat of the compressor Power module (PM1) abnormality
NO
6 5 7 8
LED indication pattern Mulfunction part or abnormal condition
Short circuit of the thermistor Open circuit of the thermistor AC abnormal current AC overcurrent
NO.3 Overheat of the compressor
1.0sec 1.0sec0.6sec 0.6sec 0.6sec0.6sec
Figure W-3. Wiring Diagram for AU-X138E

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
8
N
1
N
2
1
14
5 6 3 2 1
3
2 1 5
N
2
L
TERMINAL BOARD
LED BLINKING
NO
1 2 3 4
LED indication pattern Mulfunction part or abnormal condition
LED turns on Slow flashing ( 1 time for 2 seconds)
Example : NO.2 Compressor lock
on off 1.0sec 1.0sec 1.0sec0.6sec 0.6sec 0.6sec
Quick flashing ( 3 times for 2 seconds)
TERMINAL BOARD OUTDOOR UNIT
TERMINAL BOARD
G(Y)
G(Y)
BR BL RE
WH
RE
BK BL OR
GN
THERMISTOR COMP. TEMP. TH1
CN1
WH
BK
RE
BL
YE
BL
FC1
YE
U V W
U(R) V(S) W(C )
COMPRESSOR
POWER TRANSISTOR MODULE (PM1)
TH2 TH3
RE
CONTROL BOARD UNIT
T1
T4
The voltage is high at C8, C9 (electronic capacitors) on outdoor unit. For mentenance discharge at C8, C9 to prevent electric shock. In case that WPE2 (protecter) has been fused, the voltage is kept high at C8, C9.
YE : YELLOW GN : GREEN
BK : BLACK BL : BLUE BR : BROWN GR : GRAY
RE : RED WH : WHITE OR : ORANGE G(Y) : GREEN YELLOW
CAUTION
T5
T7
BR OR
RE WH
YE
T12
T6
T8 T14
T13
L1
L2
REACTOR
REACTOR
RE
GR
C7A C6A
D4
D5 C8 C9
T9
T10
C6B
C7B
80µF 400V 235µF 250V
470µF 400V 470µF
400V
10A 250V
235µF 250V
80µF 400V
GR
WH
BL
BK
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
BL
T2 C11 C2
C3
C1
C5
CT1
NR2
RY2
CNR2CNR1
CN3
CN6
C4
L3 L4
SA1 NR1
T11 T3
T15
WPE1
WPE2
WPE3 3A 250V
13A 250V
FAN MOTOR
4 WAY VALVE COIL
FAN MOTOR CAPACITOR 2µF 430V
THERMISTOR PIPE TEMP. THERMISTOR AIR TEMP.
UNIT TO UNIT CORD
SINGLE PHASE 220-240V 50/60Hz
LED INDICATION OF SELF-DIAGNOSIS ON OUTDOOR UNIT
FAN MOTOR
CONTROL BOARD UNIT
INDOOR UNIT
+
–
+
–
+ +
+
–
+
–
– –
RY1
Normal Abnormal signal line Compressor lock Overheat of the compressor Power module (PM1) abnormality
NO
6 5 7 8
LED indication pattern Mulfunction part or abnormal condition
Short circuit of the thermistor Open circuit of the thermistor AC abnormal current AC overcurrent
9 4 WAY VALVE error
NO.3 Overheat of the compressor
1.0sec 1.0sec0.6sec 0.6sec 0.6sec0.6sec
Figure W-4. Wiring Diagram for AE-X108E

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
9
N
1
N
2
1
14
3 5 6 2 1
3 5
N
2
L
TERMINAL BOARD
LED BLINKING
NO
1 2 3 4
LED indication pattern Mulfunction part or abnormal condition
LED turns on Slow flashing ( 1 time for 2 seconds)
Example : NO.2 Compressor lock
on off 1.0sec 1.0sec 1.0sec0.6sec 0.6sec 0.6sec
Quick flashing ( 3 times for 2 seconds)
TERMINAL BOARD OUTDOOR UNIT
TERMINAL BOARD
G(Y)
G(Y)
BR BL RE
WH
BK BL OR
THERMISTOR COMP. TEMP. TH1
CN1
WH
BK
RE
BL
YE
BL
FC1
YE
U V W
U(R) V(S) W(C )
COMPRESSOR
POWER TRANSISTOR MODULE (PM1)
TH2
RE
CONTROL BOARD UNIT
T1
T4
The voltage is high at C8, C9 (electronic capacitors) on outdoor unit. For mentenance discharge at C8, C9 to prevent electric shock. In case that WPE2 (protecter) has been fused, the voltage is kept high at C8, C9.
YE : YELLOW GN : GREEN
BK : BLACK BL : BLUE BR : BROWN GR : GRAY
RE : RED WH : WHITE OR : ORANGE G(Y) : GREEN YELLOW
CAUTION
T5 BR OR
RE RE
BL WH
RE
WH
C6
BK
C7A C7B C8 C9
C24
150µF 400V 150µF 400V
2000µF 400V 2000µF 400V
50µF 200V
4700µF 63V
L1
L2
4
123
MRY1
YE
YE
GR
BR
YE T9
T7
T8 T10
20A 250V
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
GR
BL
PTC1
REACTOR
REACTOR
GR BL BL
GR
BL
T2 C11 C2
C3
C1
C5
CT1
NR2
RY2
CN3
CN8
C4
L3 L4
SA1 NR1
T11 T3
WPE1
WPE2
WPE3 3A 250V
20A 250V
FAN MOTOR
FAN MOTOR CAPACITOR 2µF 430V
THERMISTOR PIPE TEMP.
UNIT TO UNIT CORD
SINGLE PHASE 220-240V 50/60Hz
LED INDICATION OF SELF-DIAGNOSIS ON OUTDOOR UNIT
FAN MOTOR
CONTROL BOARD UNIT
INDOOR UNIT
GN TH3
THERMISTOR AIR TEMP.
Normal Abnormal signal line Compressor lock Overheat of the compressor Power module (PM1) abnormality
NO
6 5 7 8
LED indication pattern Mulfunction part or abnormal condition
Short circuit of the thermistor Open circuit of the thermistor AC abnormal current AC overcurrent
9 4 WAY VALVE error
NO.3 Overheat of the compressor
1.0sec 1.0sec0.6sec 0.6sec 0.6sec0.6sec
2 1
RE
CNR2CNR1 T15
FAN MOTOR
4 WAY VALVE COIL
RY1
Figure W-5. Wiring Diagram for AE-X138E

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
10
ELECTRICAL PARTS
For Model AH-X108E and AU-X108E
DESCRIPTION MODEL REMARKS SITE
Indoor fan motor ML-A486 220 - 240V, 50Hz AH
Indoor fan motor capacitor – 430V, 1.5µF AH
Transformer – Primary; AC 230V, 50Hz AH
Secondary; AC14.5V, 50Hz
Fuse – 250V, 2.5A AH
Compressor HV237A1-S15DK 3-PHASE Induction motor AU
Outdoor fan motor ML-A720 220 - 240V, 50Hz AU
Outdoor fan motor capacitor – 430V, 2.0µF AU
WPE1 – QFS-GA015JBE0(10A, 250V) AU
WPE2 – QFS-AA047JBE0(13A, 250V) AU
WPE3 – QFS-GA008JBE0(3A, 250V) AU
For Model AY-X108E and AE-X108E
DESCRIPTION MODEL REMARKS SITE
Indoor fan motor ML-A486 220 - 240V, 50Hz AY
Indoor fan motor capacitor – 430V, 1.5µF AY
Transformer – Primary; AC 230V, 50Hz AY
Secondary; AC14.5V, 50Hz
Fuse – 250V, 2.5A AY
Compressor HV237A1-S15DK 3-PHASE Induction motor AE
Outdoor fan motor ML-A719 220 - 240V, 50Hz AE
Outdoor fan motor capacitor – 430V, 2.0µF AE
WPE1 – QFS-GA015JBE0(10A, 250V) AE
WPE2 – QFS-AA047JBE0(13A, 250V) AE
WPE3 – QFS-GA008JBE0(3A, 250V) AE

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
11
For Model AH-X138Eand AU-X138E
DESCRIPTION MODEL REMARKS SITE
Indoor fan motor ML-A486 220 - 240V, 50Hz AH
Indoor fan motor capacitor – 430V, 1.5µF AH
Transformer – Primary; AC 230V, 50Hz AH
Secondary; AC14.5V, 50Hz
Fuse – 250V, 2.5A AH
Compressor HV237A1-S15DK 3-PHASE Induction motor AU
Outdoor fan motor ML-A723 220 - 240V, 50Hz AU
Outdoor fan motor capacitor – 430V, 2.0µF AU
WPE1 – QFS-GA014JBE0(20A, 250V) AU
WPE2 – QFS-GA019JBE0(20A, 250V) AU
WPE3 – QFS-GA008JBE0(3A, 250V) AU
For Model AY-X138E and AE-X138E
DESCRIPTION MODEL REMARKS SITE
Indoor fan motor ML-A486 220 - 240V, 50Hz AY
Indoor fan motor capacitor – 430V, 1.5µF AY
Transformer – Primary; AC 230V, 50Hz AY
Secondary; AC14.5V, 50Hz
Fuse – 250V, 2.5A AY
Compressor HV237A1-S15DK 3-PHASE Induction motor AE
Outdoor fan motor ML-A697 220 - 240V, 50Hz AE
Outdoor fan motor capacitor – 430V, 2.0µF AE
WPE1 – QFS-GA014JBE0(20A, 250V) AE
WPE2 – QFS-GA019JBE0(20A, 250V) AE
WPE3 – QFS-GA008JBE0(3A, 250V) AE

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
12
BLOCK DIAGRAMS
INDOOR UNIT for AH-X108E / AY-X108E / AH-X138E / AY-X138E
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louver motor drive circuit
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
Power select circuit
Flow direction control
(louver motor)
Wireless remote control
operation
Audible operation confirmation
Room fan motor
Fan motor pulse detect
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)
Self diagnostics,
fault diagnosis
Power select switch H/L
AC power
Unit-unit
wiring (AC
power and
serial
signals)
CPU
FUSE
Auxiliary mode Auxiliary mode button ON/OFF
2.5 A

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
13
OUTDOOR UNIT for AE-X108E / AE-X138E / AU-X108E / AU-X138E
CPU
Test mode circuit
LED drive circuit
Winter kit circuit (option)
Heat exchanger pipe 
thermo circuit
Compressor thermo circuit
CPU reset circuit
Serial I/O circuit
Power transistor module 
drive circuit
4-way valve drive circuit
(except for AU-X138E,AU-X108E) (except for AU-X138E,AU-X108E)
Outdoor fan relay drive
circuit
Power supply
circuit (built
into IPM)
CPU oscillator circuit
AC overcurrent detection
circuit
DC overcurrent detection
circuit
LED
Heat exchanger pipe
thermistor
Compressor thermistor
Current transformer
Outdoor temperature
thermo circuit[except for the
AU-X138E and AU-X108E]
Outdoor temperature
thermistor[except for the 
AU-X138E and AU-X108E]
Compressor
Power 
transistor module
4-way valve
Outdoor fan
Smoothing
circuit Passive filter circuit
Filter
circuit Unit-unit
wiring (AC
power and
serial
signals)
protection
20A : AU-X138E, AE-X138E
13A : AU-X108E, AE-X108E
AU-X108E, AE-X108E
20A : AU-X138E, AE-X138E
10A :
protection
3 A
protection
Heat exchanger pipe
thermistor(option)
Outdoor temperature
thermistor(option)
[except for the AU-X138E 
and AU-X108E]

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
14
MICROCOMPUTER CONTROL SYSTEM
Figure L-1. Electronic Control Circuit Diagram for AH-X108E
1 2 3 4 5
C101
C102 0.1µ25v
C80 25v 0.1µC8
16v 0.01µ
C10 25v0.1µ
C17 10v 100µ
NC
JP5
JP4 JP3 JP2
JP1
5v
5v SW1
5v
5v
5v 5v
5v
5v
5v
5v
5v
5v
MODEL 5
MODEL 4 MODEL 3 MODEL 2 MODEL 1
RATING COOL RATING HEAT FAN L FAN M FAN H
AUX.
(TEST RUN)
CN1 CN2
CN3CN301
CN201
CN101
RED
GRAY
GRAY
11
7 6
1 2 3 4 5 8 9
10
7 6 1 2 3 4 5 8 9
10
33 2
CN8 CN701
CN7
1 2
12
3
2
JP99 
POWER ON
RED LED101
RED GREEN
YELLOW LED102
IC201
+
–
R9 10k
R12 10k
R29 680
R31 R33 R46 R35 R37 R39
R30 R32 R45 R34 R36 R38
PHOTO DETECTOR UNIT
R10 680 R11 330 R55 180
JP11
R54 180 R53 180 R52 180 R51 180
SW2
HL
5v
POWER
SELECT R8
10k
33 P27 34 P26 35 P25 36 P24 37 P23 38 P22 39 P21 40 P20 41 K1 42 P17 43 P16 44 P15 45 P14 46 P13 47 P12 48 P11 49 P10 50 P07 51 P06
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
P41 P42 P43 P44 P45 P46 F RESET CK1 CK2 AGND P30 P31 P32 P33 P50 P51 P52 P53
19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
TEST
OSC out
OSC in
P60
P61
P62
GND
P63
P64
P65
P66
KH
P40
32
31
30
29
28
27
26
25
24
23
22
21
20
NC
NC
NC
NC
8
IC2
12v
12v
12v
12v
12v
12v
12v
5 4 3 2 1
9
LOUVER MOTOR
RY1
R16
1.8k
2SSR1
+
–
8 7 6 5
1 2 3 4
C9
50v
1000P
R1 470 1/2W
IC80
R81 1k
R80 6.8k
R4 33k
R5 33k
3
BZ
C6
10v
100µ
ZD2
C5 25v 47µ
+
–
+
–
+
–
C18
35v
100µ
+
–
OUT IN
7805
IC4 OUT IN
7812 IC3
HEAT SINK
GNDGND C4
25v 0.1µ
C13 25v 0.1µ
C2 AC 250v 0.1µ
C14 50v 1µ
C3 25v 1000µ
5v
5v
R7 20k
R6 3.3k
3
12
Q1
C7 50v 1000P
JP9 JP8 JP6 JP7
SIGNAL IN SIGNAL OUT
WIRELESS
TEST MODEL 6 PREHEAT
1 2
3
OSC
8MHz
5v
5v
1
3IC5
C16 16v 0.01µ
C15 16v 0.01µ
D5
R22 1.2k
R21 3.3k
R18 2.7k
R20 33k
R19 4.7k
IC1
RED GREEN RED GREEN RED GREEN RED GREEN
LED201 LED202 LED203 LED204 LED205
R205 470 R204 470 R203 470 R202 470 R201 470
TRANSFORMER
D1 D2 D3 D4
(CN9)
JP10
TR C21
250VAC 0.01µ
C1
430VAC
1.5µ
NR1
NF1
FU1
2.5A 250v T
CNR1
13 11
S201D01 SSR1
1
3
5
1
5
6
3 4 2
FAN MOTOR
D6 (D9)
(R90) 2W 12K
(R91) 2W 12K
R26 2W 11k R23
100k R24
22k
R25 4.7k
R44 2W 680 X 5 R43 R42 R41 R40
R27 2W 11k C19
50v 0.047µ
C20
250v
0.01µ
HZ24-2
C12
16v
10µ
+
–
R15 10.0kF
C11
16v
10µ
+
R14 10.0kF CN4
4
3
2
1
5v TH2
TH1
PIPE TEMP. 15k (25°C) ROOM TEMP. 10k (25°C)
IN OUT
POWER SUPPLY SINGLE PHASE
1 N 2
OUTDOOR UNIT
TERMINAL BOARD
A S
D7
SERIAL SIGNAL
1 23
4
PC2
4 3
1 2PC1
5v
FUNC-
TION
IC1 PIN
No. 16(P44) 19(P41) 36(P24) 35(P25) 34(P26) 33(P27) 29(P60) 17(P43) 8(P30) 7(P31) 5(P33) 4(P50) 3(P51) 2(P52)
JP7SYMBOL JP9 JP1 JP2 JP3 JP4 JP5 JP6 R30, R31 R32, R33 R45, R46 R34, R35 R36, R37 R38, R39
NONESET USE R30: 15K
R31: 13K
R32: JP R33: NONE
R45: JP R46:
NONE
R34: 33K R35:
13K
R36:
NONE
R37: JP R38: JP
R39:
NONE
PREHEAT
NONE/ON
WIRE-
LESS
NORMAL/
CHANGE
MODEL1
fmin UP
ON/
NORMAL
MODEL2
AH/AY
MODEL3
HOT K.
NORMAL/
ON
MODEL4
13/10
MODEL5
FAN
LATTICE
NONE/ON
MODEL6 RATED f
COOL RATED f
HEAT FAN L
SPEED
1~5
FAN M
SPEED
6~10
FAN H
SPEED
11~12
USENONE NONE NONE NONE NONE
NOTE: 1. : TEST POINT
RPM
RY1
EVAPORATOR
10v 33µ
+
–
S M 8 3 1
3
2
5V Q2
3
2
5V
Q3

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
15
Figure L-2. Electronic Control Circuit Diagram for AU-X108E
+ –
RE WH
YE
T12
T5 T7
T8 T14
T13
L1
L2
REACTOR
REACTOR
RE
GR
C7A C6A
D4
D5C8 C9
T9
T10
C6B
C7B
80µF 400V
235µF 250V
470µF 400V 470µF
400V
10A 250V
235µF 250V
80µF 400V
GR
WH
BL
BK
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
WPE2
+
–
+
–
+ +
+
–
+
–
– –
NC NC
NC
NC NC NC NC NC NC NC NC NC NC NC NC
1 P31
IC1
MB89855
2 P30 3 P47 4 Z 5 Y 6 X 7 W 8 V 9 U
10 P40 11 AN0 12 AN1 13 AN2 14 AN3 15 AN4 16 AN5 17 AN6 18 AN7 19 AVCC 20 AVR 21 AVSS 22 DTTI 23 P63 24 P62 25 P61 26 P60 27 RESET 28 MOD2 29 MOD1 30 X0 31 X1 32 VSS
64VCC 63P32 62P33 61P34 60P35 59P36 58P37 57VSS 56P00 55P01 54P02 53P03 52P04 51P05 50P06 49P07 48P10 47P11 46P12 45P13 44P14 43P15 42P16 41P17 40P20 39P21 38P22 37P23 36P24 35P25 34P26 33P27
5V
5V
LED1
R30 2.2k
4.7K R12
R13 2.7K PC1:PC817X7
PC2:PC853H
1000P C14 R10
3.3K C13
0.1µ 25V
C12 4700P 250V
IC3
C23 OSC1
IC1
1µ 50v
5V
+ –
PST993D
2W 680 2W 680 2W 680 2W 680 2W 680 13V
Q5 KRC106M Q4
DTD113ZS
D7 RY2 D6 MRY1
50V
R11
56K PC2 R9
R8 R7 R6 R5
4 3
4 3
1 2
1 2
5V
5V
R31 10K
10K
R32
PC1 D1 B
0.1µ
250v
C45
100µ
10v
C46
A
5V
5V5V 13V
R52 10K
R51 10K JP1
R50 13K
F
R20 IC2
7805 C17
+ –100µ
10µ
1W 47
+
–
+
–
C16 0.1µ
25V
R33
R21 1.0K 1/2W
680 C44
100µ/25V
10
9 8 7 6 5 4
4 2 1
1 3 5
3 2 1
1 2 3 4
R14 330 R15 330 R16 330 R17 330 R18 330 R19 330
LW HW LV HV LU HU GND Vin1 Vcc1 ARM C15
1000P
CN1 (1PM)25V
5V
CN10 WINTER KIT
R40 10K
C22
10µ 16V
10µ 16V
+
–
C21R27
6.8KF
6.8KF
R26
3
TH1 TH2 R22
330K
CN8 (THERMISTOR)
TH1 : COMPRESSOR TH2 : HEAT-EXCHANGER
CNR2
RY2
NR2
1
N
2
WPE3 3A 250V
GREEN/YELLOW
GREEN/YELLOW
C5
5V
2µ430V
CN3 FAN MOTOR
T11
T4 NR1 SA1
13A
WPE1
T1 T2 T3
C11 0.47µ 250V
L3
C3,C4:4700P AC250V
1 3 2 4 C4
C3
C2
L4
1 3 2 4 R2
R59 2.7KF
D9
YELLOW
FC1
IPM
COMPRESSOR
U
WV
BLUE
C43 220µ 16V
R61 10KF
R60 1.00KF
R1
C1
CT1
TERMINAL BOARD
B A
BROWN BLUE RED
250V 1.0µ
250V. R1, R2:510K0.22µ
1/4W 250V +
–

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
16
Figure L-3. Electronic Control Circuit Diagram for AH-X138E
1 2 3 4 5
C101
C102 0.1µ25v
C80 25v 0.1µC8
16v 0.01µ
C10 25v0.1µ
C17 10v 100µ
NC
JP5
JP4 JP3 JP2
JP1
5v
5v SW1
5v
5v
5v 5v
5v
5v
5v
5v
5v
5v
MODEL 5
MODEL 4 MODEL 3 MODEL 2 MODEL 1
RATING COOL RATING HEAT FAN L FAN M FAN H
AUX.
(TEST RUN)
CN1 CN2
CN3CN301
CN201
CN101
RED
GRAY
GRAY
11
7 6
1 2 3 4 5 8 9
10
7 6 1 2 3 4 5 8 9
10
33 2
CN8 CN701
CN7
1 2
12
3
2
JP99 
POWER ON
RED LED101
RED GREEN
YELLOW LED102
IC201
+
–
R9 10k
R12 10k
R29 680
R31 R33 R46 R35 R37 R39
R30 R32 R45 R34 R36 R38
PHOTO DETECTOR UNIT
R10 680 R11 330 R55 180
JP11
R54 180 R53 180 R52 180 R51 180
SW2
HL
5v
POWER
SELECT R8
10k
33 P27 34 P26 35 P25 36 P24 37 P23 38 P22 39 P21 40 P20 41 K1 42 P17 43 P16 44 P15 45 P14 46 P13 47 P12 48 P11 49 P10 50 P07 51 P06
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
P41 P42 P43 P44 P45 P46 F RESET CK1 CK2 AGND P30 P31 P32 P33 P50 P51 P52 P53
19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
TEST
OSC out
OSC in
P60
P61
P62
GND
P63
P64
P65
P66
KH
P40
32
31
30
29
28
27
26
25
24
23
22
21
20
NC
NC
NC
NC
8
IC2
12v
12v
12v
12v
12v
12v
12v
5 4 3 2 1
9
LOUVER MOTOR
RY1
R16
1.8k
2SSR1
+
–
8 7 6 5
1 2 3 4
C9
50v
1000P
R1 470 1/2W
IC80
R81 1k
R80 6.8k
R4 33k
R5 33k
3
BZ
C6
10v
100µ
ZD2
C5 25v 47µ
+
–
+
–
+
–
C18
35v
100µ
+
–
OUT IN
7805
IC4 OUT IN
7812 IC3
HEAT SINK
GNDGND C4
25v 0.1µ
C13 25v 0.1µ
C2 AC 250v 0.1µ
C14 50v 1µ
C3 25v 1000µ
5v
5v
R7 20k
R6 3.3k
3
12
Q1
C7 50v 1000P
JP9 JP8 JP6 JP7
SIGNAL IN SIGNAL OUT
WIRELESS
TEST MODEL 6 PREHEAT
1 2
3
OSC
8MHz
5v
5v
1
3IC5
C16 16v 0.01µ
C15 16v 0.01µ
D5
R22 1.2k
R21 3.3k
R18 2.7k
R20 33k
R19 4.7k
IC1
RED GREEN RED GREEN RED GREEN RED GREEN
LED201 LED202 LED203 LED204 LED205
TRANSFORMER
D1 D2 D3 D4
(CN9)
JP10
TR C21
250VAC 0.01µ
C1
430VAC
1.5µ
NR1
NF1
FU1
2.5A 250v T
CNR1
13 11
S201D01 SSR1
1
3
5
1
5
6
3 4 2
FAN MOTOR
D6 (D9)
(R90) 2W 12K
(R91) 2W 12K
R26 2W 11k R23
100k R24
22k
R25 4.7k
R44 2W 680 X 5 R43 R42 R41 R40
R27 2W 11k C19
50v 0.047µ
C20
250v
0.01µ
HZ24-2
C12
16v
10µ
+
–
R15 10.0kF
C11
16v
10µ
+
R14 10.0kF CN4
4
3
2
1
5v TH2
TH1
PIPE TEMP. 15k (25°C) ROOM TEMP. 10k (25°C)
IN OUT
POWER SUPPLY SINGLE PHASE
1 N 2
OUTDOOR UNIT
TERMINAL BOARD
A S
D7
SERIAL SIGNAL
1 23
4
PC2
4 3
1 2PC1
5v
FUNC-
TION
IC1 PIN
No. 16(P44) 19(P41) 36(P24) 35(P25) 34(P26) 33(P27) 29(P60) 17(P43) 8(P30) 7(P31) 5(P33) 4(P50) 3(P51) 2(P52)
JP7SYMBOL JP9 JP1 JP2 JP3 JP4 JP5 JP6 R30, R31 R32, R33 R45, R46 R34, R35 R36, R37 R38, R39
NONESET USE R30: 15K
R31: 13K
R32: JP R33: NONE
R45: JP R46:
NONE
R34: JP R35:
NONE
R36:
NONE
R37: JP R38: JP
R39:
NONE
PREHEAT
NONE/ON
WIRE-
LESS
NORMAL/
CHANGE
MODEL1
fmin UP
ON/
NORMAL
MODEL2
AH/AY
MODEL3
HOT K.
NORMAL/
ON
MODEL4
13/10
MODEL5
FAN
LATTICE
NONE/ON
MODEL6 RATED f
COOL RATED f
HEAT FAN L
SPEED
1~5
FAN M
SPEED
6~10
FAN H
SPEED
11~12
USE USENONE NONE NONE NONE
NOTE: 1. : TEST POINT
RPM
RY1
EVAPORATOR
10v 33µ
+
–
S M 8 3 1
R205 470 R204 470 R203 470 R202 470 R201 470 3
2
5V Q2
3
2
5V
Q3

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
17
Figure L-4. Electronic Control Circuit Diagram for AU-X138E
+ –
NC NC
NC
NC NC NC NC NC NC NC NC NC NC NC NC
1 P31
IC1
MB89855
2 P30 3 P47 4 Z 5 Y 6 X 7 W 8 V 9 U
10 P40 11 AN0 12 AN1 13 AN2 14 AN3 15 AN4 16 AN5 17 AN6 18 AN7 19 AVCC 20 AVR 21 AVSS 22 DTTI 23 P63 24 P62 25 P61 26 P60 27 RESET 28 MOD2 29 MOD1 30 X0 31 X1 32 VSS
64VCC 63P32 62P33 61P34 60P35 59P36 58P37 57VSS 56P00 55P01 54P02 53P03 52P04 51P05 50P06 49P07 48P10 47P11 46P12 45P13 44P14 43P15 42P16 41P17 40P20 39P21 38P22 37P23 36P24 35P25 34P26 33P27
5V
5V
LED1
R30 2.2k
4.7K R12
R13 2.7K PC1:PC817X7
PC2:PC853H
1000P C14 R10
3.3K C13
0.1µ 25V
C12 4700P 250V
IC3
C23 OSC1
IC1
1µ 50v
5V
+ –
PST993D
2W 680 2W 680 2W 680 2W 680 2W 680 13V
Q5 KRC106M Q4
DTD113ZS
D7 RY2 D6 MRY1
50V
R11
56K PC2 R9
R8 R7 R6 R5
4 3
4 3
1 2
1 2
5V
5V
R31 10K
10K
R32
PC1 D1 B
0.1µ
250v
C45
100µ
10v
C46
A
5V
5V5V 13V
R52 10K
R50 43K R51 10K JP1
F
R20 IC2
7805 C17
+ –100µ
10µ
1W 47
+
–
+
–
C16 0.1µ
25V
R33
R21 1.0K 1/2W
680 C44
100µ/25V
10
9 8 7 6 5 4
4 2 1
1 3 5
3 2 1
1 2 3 4
R14 330 R15 330 R16 330 R17 330 R18 330 R19 330
LW HW LV HV LU HU GND Vin1 Vcc1 ARM C15
1000P
CN1 (1PM)25V
5V
CN10 WINTER KIT
R40 10K
C22
10µ 16V
10µ 16V
10µ 16V
+
–
C21R27
6.8KF 6.8KF
R26
+
–
C20
3
TH1 TH2 R22
330K
CN8 (THERMISTOR)
TH1 : COMPRESSOR TH2 : HEAT-EXCHANGER
CNR2
RY2
NR2
1
N
2
WPE3 3A 250V
GREEN/YELLOW
GREEN/YELLOW
C5 2µ430V
CN3 FAN MOTOR
T11
T4 NR1 SA1
20A
WPE1
T1 T2 T3
C11 0.47µ 250V
L3
C3,C4:4700P AC250V
1 3 2 4 C4
C3
C2
L4
1 3 2 4 R2
R59 1.8KF
D9
BLUE
BLUE
GRAY GRAYL1
T5
MRY1
DB1
RED RED
200V 50 µ
L2
43
2
C6
DB2
C8
RED
BLACK
WHITE WHITE
YELLOW
YELLOW
YELLOW
FC1
IPM
COMPRESSOR
U
WV
C24 T7 T9
T10
R3
R4 20A 250V
270K 1/2W WPE2 270K 1/2W
T8
BLUE
BLUE
BROWN
BROWN
BLUE
GRAY GRAY
GRAY
150µ 400v 150µ 400v
2000µ
400v
2000µ 400v
63V
1
ORANGE BROWN
C7A
+ –+
–C9
+
+
–
–
+ –
C7B
C43 220µ 16V
R61 6.49KF
R60 1.00KF
R1
C1
CT1
TERMINAL BOARD
B A
BROWN BLUE RED
250V 1.0µ
250V. R1, R2:510K0.22µ
1/4W 250V +
–
4700µ

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
18
Figure L-5. Electronic Control Circuit Diagram for AY-X108E
1 2 3 4 5
C101
C102 0.1µ25v
C80 25v 0.1µC8
16v 0.01µ
C10 25v0.1µ
C17 10v 100µ
NC
JP5
JP4 JP3 JP2
JP1
5v
5v SW1
5v
5v
5v 5v
5v
5v
5v
5v
5v
5v
MODEL 5
MODEL 4 MODEL 3 MODEL 2 MODEL 1
RATING COOL RATING HEAT FAN L FAN M FAN H
AUX.
(TEST RUN)
CN1 CN2
CN3CN301
CN201
CN101
RED
GRAY
GRAY
11
7 6
1 2 3 4 5 8 9
10
7 6 1 2 3 4 5 8 9
10
33 2
CN8 CN701
CN7
1 2
12
3
2
JP99 
POWER ON
RED LED101
RED GREEN
YELLOW LED102
IC201
+
–
R9 10k
470 R205 470 R204
R12 10k
R29 680
R31 R33 R46 R35 R37 R39
R30 R32 R45 R34 R36 R38
PHOTO DETECTOR UNIT
R10 680 R11 330 R55 180
JP11
R54 180 R53 180 R52 180 R51 180
470 R203 470 R202 470 R201
SW2
HL
5v
POWER
SELECT R8
10k
33 P27 34 P26 35 P25 36 P24 37 P23 38 P22 39 P21 40 P20 41 K1 42 P17 43 P16 44 P15 45 P14 46 P13 47 P12 48 P11 49 P10 50 P07 51 P06
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
P41 P42 P43 P44 P45 P46 F RESET CK1 CK2 AGND P30 P31 P32 P33 P50 P51 P52 P53
19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
TEST
OSC out
OSC in
P60
P61
P62
GND
P63
P64
P65
P66
KH
P40
32
31
30
29
28
27
26
25
24
23
22
21
20
NC
NC
NC
NC
8
IC2
12v
12v
12v
5v
1
23
Q3
12v
12v
12v
12v
5 4 3 2 1
9
LOUVER MOTOR
RY1
R16
1.8k
2SSR1
+
–
8 7 6 5
1 2 3 4
C9
50v
1000P
R1 470 1/2W
IC80
R81 1k
R80 6.8k
R4 33k
R5 33k
3
BZ
C6
10v
100µ
ZD2
C5 25v 47µ
+
–
+
–
+
–
C18
35v
100µ
+
–
OUT IN
7805
IC4 OUT IN
7812 IC3
HEAT SINK
GNDGND C4
25v 0.1µ
C13 25v 0.1µ
C2 AC 250v 0.1µ
C14 50v 1µ
C3 25v 1000µ
5v
5v
R7 20k
R6 3.3k
3
12
Q1
C7 50v 1000P
JP9 JP8 JP6 JP7
SIGNAL IN SIGNAL OUT
WIRELESS
TEST MODEL 6 PREHEAT
1 2
3
OSC
8MHz
5v
5v
1
3IC5
C16 16v 0.01µ
C15 16v 0.01µ
D5
R22 1.2k
R21 3.3k
R18 2.7k
R20 33k
R19 4.7k
IC1
RED GREEN RED GREEN RED GREEN RED GREEN
LED201 LED202 LED203 LED204 LED205
TRANSFORMER
D1 D2 D3 D4
(CN9)
JP10
TR C21
250VAC 0.01µ
C1
430VAC
1.5µ
NR1
NF1
FU1
2.5A 250v T
CNR1
13 11
S201D01 SSR1
1
3
5
1
5
6
3 4 2
FAN MOTOR
D6 (D9)
(R90) 2W 12K
(R91) 2W 12K
R26 2W 11k R23
100k R24
22k
R25 4.7k
R44 2W 680 X 5 R43 R42 R41 R40
R27 2W 11k C19
50v 0.047µ
C20
250v
0.01µ
HZ24-2
C12
16v
10µ
+
–
R15 10.0kF
C11
16v
10µ
+
R14 10.0kF CN4
4
3
2
1
5v TH2
TH1
PIPE TEMP. 15k (25°C) ROOM TEMP. 10k (25°C)
IN OUT
POWER SUPPLY SINGLE PHASE
1 N 2
OUTDOOR UNIT
TERMINAL BOARD
A S
D7
SERIAL SIGNAL
1 23
4
PC2
4 3
1 2PC1
5v
FUNC-
TION
IC1 PIN
No. 16(P44) 19(P41) 36(P24) 35(P25) 34(P26) 33(P27) 29(P60) 17(P43) 8(P30) 7(P31) 5(P33) 4(P50) 3(P51) 2(P52)
JP7SYMBOL JP9 JP1 JP2 JP3 JP4 JP5 JP6 R30, R31 R32, R33 R45, R46 R34, R35 R36, R37 R38, R39
NONESET USE R30: 15K
R31: 13K
R32: 15K R33: 13K
R45: 2.4K R46:
10K
R34: 33K R35:
13K
R36:
NONE
R37: JP R38: JP
R39:
NONE
PREHEAT
NONE/ON
WIRE-
LESS
NORMAL/
CHANGE
MODEL1
fmin UP
ON/
NORMAL
MODEL2
AH/AY
MODEL3
HOT K.
NORMAL/
ON
MODEL4
13/10
MODEL5
FAN
LATTICE
NONE/ON
MODEL6 RATED f
COOL RATED f
HEAT FAN L
SPEED
1~5
FAN M
SPEED
6~10
FAN H
SPEED
11~12
USENONE NONE NONE NONE NONE
NOTE: 1. : TEST POINT
RPM
RY1
EVAPORATOR
10v 33µ
+
–
S M 8 3 1
5v
1
23
Q2

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
19
Figure L-6. Electronic Control Circuit Diagram for AE-X108E
+ –
RE WH
YE
T12
T5 T7
T8 T14
T13
L1
L2
REACTOR
REACTOR
RE
GR
C7A C6A
D4
D5C8 C9
T9
T10
C6B
C7B
80µF 400V
235µF 250V
470µF 400V 470µF
400V
10A 250V
235µF 250V
80µF 400V
GR
WH
BL
BK
DB1 DB2
DIODE BRIDGE DIODE BRIDGE
WPE2
+
–
+
–
+ +
+
–
+
–
– –
NC NC
NC
NC NC NC NC NC NC NC NC NC NC NC NC
1 P31
IC1
MB89855
2 P30 3 P47 4 Z 5 Y 6 X 7 W 8 V 9 U
10 P40 11 AN0 12 AN1 13 AN2 14 AN3 15 AN4 16 AN5 17 AN6 18 AN7 19 AVCC 20 AVR 21 AVSS 22 DTTI 23 P63 24 P62 25 P61 26 P60 27 RESET 28 MOD2 29 MOD1 30 X0 31 X1 32 VSS
64VCC 63P32 62P33 61P34 60P35 59P36 58P37 57VSS 56P00 55P01 54P02 53P03 52P04 51P05 50P06 49P07 48P10 47P11 46P12 45P13 44P14 43P15 42P16 41P17 40P20 39P21 38P22 37P23 36P24 35P25 34P26 33P27
5V
5V
LED1
R30 2.2k
4.7K R12
R13 2.7K PC1:PC817X7
PC2:PC853H
1000P C14 R10
3.3K C13
0.1µ 25V
C12 4700P 250V
IC3
C23 OSC1
IC1
1µ 50v
5V
+ –
PST993D
2W 680 2W 680 2W 680 2W 680 2W 680 13V
13V
Q5 KRC106M Q4
DTD113ZS
D7 RY2 D6 MRY1
Q4 DTD113ZS
D6
D12 D10
D3
D11
MRY1
Q12 DTD123TS
Q11 DTB123YS Q8
DTB123YS
Q7 DTC124ESA Q9
DTD123TS
CN4 (4-WAY VALVE)
Q10 DTC124P5A
50V
R11
56K PC2 R9
R8 R7 R6 R5
4 3
4 3
1 2
1 2
5V
5V
R31 10K
10K
R32
PC1 D1 B
0.1µ
250v
C45
100µ
10v
C46
A
5V
5V5V 13V
R52 10K
R50 22K R51 10K JP1
F
R20 IC2
7805 C17
+ –100µ
10µ
1W 47
+
–
+
–
C16 0.1µ
25V
R33
R21 1.0K 1/2W
680 C44
100µ/25V
10
9 8 7 6 5 4
4 2 1
1 3 5
3 2 1
1 2 3 4
R14 330 R15 330 R16 330 R17 330 R18 330 R19 330
LW HW LV HV LU HU GND Vin1 Vcc1 ARM C15
1000P
CN1 (1PM)25V
5V
CN10 WINTER KIT
R40 10K
C22
10µ 16V
10µ 16V
+
–
C21
10µ 16V
+
–
C20R27
6.8KF6.8KF
R25
6.8KF
R26
3
TH1 TH2
6
1
2
5
TH3
R22 330K
CN8 (THERMISTOR)
TH1 : COMPRESSOR TH2 : HEAT-EXCHANGER TH3 : OUTDOOR TEMP.
CNR2 CNR1
RY2 RY1
T15
NR2
1
N
2
WPE3 3A 250V
GREEN/YELLOW
GREEN/YELLOW
C5
5V
2µ430V
CN3 FAN MOTOR
T11
T4 NR1 SA1
13A
WPE1
T1 T2 T3
C11 0.47µ 250V
L3
C3,C4:4700P AC250V
1 3 2 4 C4
C3
C2
L4
1 3 2 4 R2
R59 2.7KF
D9
YELLOW
FC1
IPM
COMPRESSOR
U
WV
BLUE
C43 220µ 16V
R61 10KF
R60 1.00KF
R1
C1
CT1
TERMINAL BOARD
B A
BROWN BLUE RED
250V 1.0µ
250V. R1, R2:510K0.22µ
1/4W 250V +
–

AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
20
Figure L-7. Electronic Control Circuit Diagram for AY-X138E
1 2 3 4 5
C101
C102 0.1µ25v
C80 25v 0.1µC8
16v 0.01µ
C10 25v0.1µ
C17 10v 100µ
NC
JP5
JP4 JP3 JP2
JP1
5v
5v SW1
5v
5v
5v 5v
5v
5v
5v
5v
5v
5v
MODEL 5
MODEL 4 MODEL 3 MODEL 2 MODEL 1
RATING COOL RATING HEAT FAN L FAN M FAN H
AUX.
(TEST RUN)
CN1 CN2
CN3CN301
CN201
CN101
RED
GRAY
GRAY
11
7 6
1 2 3 4 5 8 9
10
7 6 1 2 3 4 5 8 9
10
33 2
CN8 CN701
CN7
1 2
12
3
2
JP99 
POWER ON
RED LED101
RED GREEN
YELLOW LED102
IC201
+
–
R9 10k
470 R205 470 R204
R12 10k
R29 680
R31 R33 R46 R35 R37 R39
R30 R32 R45 R34 R36 R38
PHOTO DETECTOR UNIT
R10 680 R11 330 R55 180
JP11
R54 180 R53 180 R52 180 R51 180
470 R203 470 R202 470 R201
SW2
HL
5v
POWER
SELECT R8
10k
33 P27 34 P26 35 P25 36 P24 37 P23 38 P22 39 P21 40 P20 41 K1 42 P17 43 P16 44 P15 45 P14 46 P13 47 P12 48 P11 49 P10 50 P07 51 P06
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
P41 P42 P43 P44 P45 P46 F RESET CK1 CK2 AGND P30 P31 P32 P33 P50 P51 P52 P53
19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
TEST
OSC out
OSC in
P60
P61
P62
GND
P63
P64
P65
P66
KH
P40
32
31
30
29
28
27
26
25
24
23
22
21
20
NC
NC
NC
NC
8
IC2
12v
12v
12v
5v
1
23
Q3
12v
12v
12v
12v
5 4 3 2 1
9
LOUVER MOTOR
RY1
R16
1.8k
2SSR1
+
–
8 7 6 5
1 2 3 4
C9
50v
1000P
R1 470 1/2W
IC80
R81 1k
R80 6.8k
R4 33k
R5 33k
3
BZ
C6
10v
100µ
ZD2
C5 25v 47µ
+
–
+
–
+
–
C18
35v
100µ
+
–
OUT IN
7805
IC4 OUT IN
7812 IC3
HEAT SINK
GNDGND C4
25v 0.1µ
C13 25v 0.1µ
C2 AC 250v 0.1µ
C14 50v 1µ
C3 25v 1000µ
5v
5v
R7 20k
R6 3.3k
3
12
Q1
C7 50v 1000P
JP9 JP8 JP6 JP7
SIGNAL IN SIGNAL OUT
WIRELESS
TEST MODEL 6 PREHEAT
1 2
3
OSC
8MHz
5v
5v
1
3IC5
C16 16v 0.01µ
C15 16v 0.01µ
D5
R22 1.2k
R21 3.3k
R18 2.7k
R20 33k
R19 4.7k
IC1
RED GREEN RED GREEN RED GREEN RED GREEN
LED201 LED202 LED203 LED204 LED205
TRANSFORMER
D1 D2 D3 D4
(CN9)
JP10
TR C21
250VAC 0.01µ
C1
430VAC
1.5µ
NR1
NF1
FU1
2.5A 250v T
CNR1
13 11
S201D01 SSR1
1
3
5
1
5
6
3 4 2
FAN MOTOR
D6 (D9)
(R90) 2W 12K
(R91) 2W 12K
R26 2W 11k R23
100k R24
22k
R25 4.7k
R44 2W 680 X 5 R43 R42 R41 R40
R27 2W 11k C19
50v 0.047µ
C20
250v
0.01µ
HZ24-2
C12
16v
10µ
+
–
R15 10.0kF
C11
16v
10µ
+
R14 10.0kF CN4
4
3
2
1
5v TH2
TH1
PIPE TEMP. 15k (25°C) ROOM TEMP. 10k (25°C)
IN OUT
POWER SUPPLY SINGLE PHASE
1 N 2
OUTDOOR UNIT
TERMINAL BOARD
A S
D7
SERIAL SIGNAL
1 23
4
PC2
4 3
1 2PC1
5v
FUNC-
TION
IC1 PIN
No. 16(P44) 19(P41) 36(P24) 35(P25) 34(P26) 33(P27) 29(P60) 17(P43) 8(P30) 7(P31) 5(P33) 4(P50) 3(P51) 2(P52)
JP7SYMBOL JP9 JP1 JP2 JP3 JP4 JP5 JP6 R30, R31 R32, R33 R45, R46 R34, R35 R36, R37 R38, R39
NONESET USE R30: 5.1K
R31: 13K
R32: 15K R33: 13K
R45: 2.4K R46:
10K
R34: JP R35:
NONE
R36:
NONE
R37: JP R38: JP
R39:
NONE
PREHEAT
NONE/ON
WIRE-
LESS
NORMAL/
CHANGE
MODEL1
fmin UP
ON/
NORMAL
MODEL2
AH/AY
MODEL3
HOT K.
NORMAL/
ON
MODEL4
13/10
MODEL5
FAN
LATTICE
NONE/ON
MODEL6 RATED f
COOL RATED f
HEAT FAN L
SPEED
1~5
FAN M
SPEED
6~10
FAN H
SPEED
11~12
USE USENONE NONE NONE NONE
NOTE: 1. : TEST POINT
RPM
RY1
EVAPORATOR
10v 33µ
+
–
S M 8 3 1
5v
1
23
Q2