Fujitsu ASU9RD User manual

HIGH POWER MULTI
AIR CONDITIONER
WALL MOUNTED type
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OUTLINE AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 3
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . . . 5
OUTDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . 6
PRINTED CIRCUIT BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . 7
DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Models Indoor unit Outdoor unit
ASU9RD AOU18RD

– 1 –
SPECIFICATIONS
INDOOR UNIT ASU9RD ASU9RD x 2
OUTDOOR UNIT AOU18RD
COOLING CAPACITY
(BTU/hr)
9,300 - 9,600 18,600 - 18,800
HEATING CAPACITY 10,300 - 10,700 20,500 - 21,500
POWER SOURCE (V) 208 - 230
FREQUENCY (Hz) 60
RUNNING CURRENT (A) COOLING 4.9 - 4.6 9.5 - 9.0
HEATING 4.6 - 4.4 8.5 - 8.1
INPUT WATTS (W) COOLING 1,000 - 1,030 1,950 - 2,000
HEATING 940 - 980 1,650 - 1,750
SEER 10.5 11.0
MOISTURE REMOVAL Pts/hr (R/hr) 2.1 (1.0) 2.1 (1.0) + 2.1 (1.0)
AIR CIRCULATION-Hi (m
3
/hr) 510 510 + 510
ELECTRICAL DATA
COMPRESSOR
FAN MOTOR
DIMENSIONS
TYPE Hermetic type, Permanent split condenser,
2 pole, Single phase, Induction motor
CODE QK151KAA
208 - 230V 60Hz
REFRIGERANT R-22 lbs (g) 1.98 (900) x 2
POWER SOURCE (V) 208 - 230
HI COOL/HEAT (r.p.m.) 1,320 ± 20 / 1,300 ± 20
INDOOR UNIT MED
COOL/HEAT (r.p.m.) 1,210 ± 20 / 1,200 ± 20
LO COOL/HEAT (r.p.m.) 1,100 ± 20 / 1,080 ± 20
QUIET COOL/HEAT (r.p.m.) 1,000 ± 20 / 960 ± 20
OUTDOOR UNIT (r.p.m.) 0,650 ±50 / 750 ± 50
INDOOR UNIT
H x W x D inch (mm)
11 (280) x 32-1/8 (815) x 7 (179)
OUTDOOR UNIT 25-6/16 (643) x 33-1/16 (840) x 13-3/16 (335)
WEIGHTS
INDOOR UNIT
GROSS / NET lbs (kg)
26 / 22 (12 / 10)
OUTDOOR UNIT 168 / 150 (76 / 68)

Models : ASU9RD / AOU18RD
32-1/8”(815) 7 (179)
11 (280)
– 2 –
OUTLINE AND DIMENSIONS
INDOOR UNIT
Unit : inch (mm)
OUTDOOR UNIT
33-1/16”
(840) 13-3/16” (336)
25-6/16”
(643)
13-3/16”
(333)
63/64” (25)
31-10/16” (804)
Mounting bolt pitch)

– 3 –
REFRIGERANT SYSTEM DIAGRAM
Models : ASU9RD x 2 / AOU18RD
COMPRESSOR-A
4-WAY
VALVE
2-WAY
VALVE
2-WAY
VALVE
3-WAY
VALVE
3-WAY
VALVE
ED
SC
HEAT COOL
THERMISTOR-A
(DISCHARGE PIPE)
COMPRESSOR-B THERMISTOR-B
(DISCHARGE PIPE)
THERMISTOR-A
(CONDENSER)
THERMISTOR
(PIPE)
EVAPORATOR
EVAPORATOR
THERMISTOR-B
(CONDENSER)
CAPILLARY
TUBE HEAT EXCHANGER
CAPILLARY
TUBE
STRAINER
STRAINER
OUTDOOR UNIT
INDOOR UNIT A
INDOOR UNIT B
UNIT A
THERMISTOR
(PIPE)
4-WAY
VALVE
E
S
D
CHEAT COOL
UNIT B
EXPANSION
VALVE-A
EXPANSION
VALVE-B

– 4 –
CIRCUIT DIAGRAM
Models : ASU9RD x 2 / AOU18RD
12345
12 12 12
22
11
345
12345
123456789
123456789
6789
3
2
1
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
2
1
PURPLE
BLUE
GREEN
YELLOW
ORANGE
RED
WHITE BLACK RED
BLACK
GREEN
RED BLACK
123
WHITE
YELLOW WHITE
ORANGE
ORANGE
WHITE RED WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE
BROWN
1
2
1
2
M
FM
FM
FAN MOTOR
FAN
CAPACITOR
COMPRESSOR
CAPACITOR B
ELECTRIC
VALVE
COIL A
SOLENOID
COIL A
COMPRESSOR
MOTOR B
POWER
RELAY B
TERMINAL
TERMINAL
POWER SOURCE
230 - 208V 60Hz
OVERLOAD
PROTECTOR
BLACK
BLACK BLACK
WHITE
RED
BLUE
RED
BROWN
BLUE
ORANGE
YELLOW
WHITE
ELECTRIC
VALVE
COIL B
THERMISTOR
(OUTDOOR TEMP.)
RED
BROWN
BLACK
RED
BLUE
BROWN
S
R
CBLACK
SOLENOID
COIL B
BLACK
BLACK
WHITE
BLACK
BLACK
BLACK PINK BLACK
WHITE
WHITE WHITE BLUE
RED
GREEN
RED
RED
PURPLE
PURPLE
BLUE
ORANGE
YELLOW
YELLOW
WHITE
THERMAL
FUSE
FUSE
F1 T3.15A 250V
FUSE (3A)
G
TRANSFORMER
PRINTED
CIRCUIT
BOARD
RED
RED
BLUE
BLUE
BLACK
BROWN
PINK
GREEN
YELLOW
UNIT A UNIT B POWER
THERMISTOR A
(COND. TEMP.)
THERMISTOR B
(COND. TEMP.)
THERMISTOR A
(DIS. TEMP.)
THERMISTOR B
(DIS. TEMP.)
WHITE
WHITE BLACK
WHITE
BLACK WHITE
COMPRESSOR
CAPACITOR A
COMPRESSOR
MOTOR A
STEP MOTOR
CONTROL BOARD
POWER
SUPPLY
BOARD
THERMISTOR
(ROOM TEMP.)
(LOUVER U)
LOUVER Z
DIFFUSER
TEST
POWER
RELAY A
OVERLOAD
PROTECTOR
RED
WHITE
BROWN
RED
ORANGE
YELLOW
GREEN
BLACK
BLACK
BLACK
WHITE GRAY PURPLE BLUE
BROWN
S
R
C
BLACK
GREEN/
YELLOW
1
2
3
4
5
6
7
8
9
10
1
12345
12345
2
3
4
5
6
7
8
9
10
M
54321
54321
()
THERMISTOR
(PIPE TEMP.)
PRINTED CIRCUIT
BOARD (DISPLAY)
FAN MOTOR
CAPACITOR
TERMINAL THERMAL
PROTECTOR
GRAY
GRAY
12345
12 12 12
22
11
345
12345
123456789
123456789
6789
3
2
1
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
2
1
PURPLE
BLUE
GREEN
YELLOW
ORANGE
RED
WHITE BLACK RED
BLACK
GREEN
RED BLACK
123
WHITE
YELLOW WHITE
ORANGE
ORANGE
WHITE RED WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE WHITE
BROWN
1
2
1
2
M
FM
STEP MOTOR
CONTROL BOARD
POWER
SUPPLY
BOARD
THERMISTOR
(ROOM TEMP.)
(LOUVER U)
LOUVER Z
DIFFUSER
TEST
UNIT A
INDOOR UNIT OUTDOOR UNIT
UNIT B
BROWN
RED
ORANGE
YELLOW
GREEN
BLACK
BLACK
BLACK
WHITE GRAY PURPLE BLUE
GREEN/
YELLOW
1
2
3
4
5
6
7
8
9
10
1
12345
12345
2
3
4
5
6
7
8
9
10
M
54321
54321
()
THERMISTOR
(PIPE TEMP.)
PRINTED CIRCUIT
BOARD (DISPLAY)
FAN MOTOR
CAPACITOR
TERMINAL THERMAL
PROTECTOR
GRAY
GRAY
CN1
CN7
CN101 CN103
W104W105W106W101
CN104
CN6 CN5CN4
CN11
1
2
12
3
4
5
6
EV
4WV
CN12
1
2
1
2
CN7
1
2
3
4
5
6
CN8
W2 W1
1
2
3
4
CN9
1
2
3
4
5
6
7
8
9
10
EV
1234
CN3CN2
CN4
4WV
1
2
CN5
1
2
1
CN1
E
1
2
CN18
3
1
2
CN10
3
2345678
12345
CN3
CN2
CN1
CN7
CN101
CN102 CN102
CN103
W104W105W106W101
CN104
CN6 CN5CN4
12345
CN3
CN2

– 5 –
INDOOR PRINTED CIRCUIT BOARD
CIRCUIT DIAGRAM
Model : ASU9RD
(RED)
(GREEN)
(WHITE) (WHITE) (ORANGE) (ORANGE)
(BROWN)
(BROWN)
(BLACK)
(BLACK)
(GRAY)
(GRAY)
PIPE TEMPERATURE
THERMISTOR
ROOM TEMPERATURE
THERMISTOR
(RED)
(ORANGE)
(PURPLE)
(RED)
(
ORANGE )
(YELLOW)
(YELLOW)
(GREEN)
(GREEN)
(BLUE)
(BLUE) OPERATE (RED)
TIMER (GREEN)
SWING (ORANGE)
(PURPLE)
(GRAY)
(WHITE)
(BLACK)
LOUVER U
LOUVER Z
(DIFFUSER)
INDICATOR PCB
CONTROLLER PCB ASSEMBLY (MAIN PCB)
THERMAL
FUSE
FAN
CAPACITOR
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(WHITE)
(RED)
(RED)
(RED)
(BLACK)
(BLACK) (WHITE)
MODEL CHANGING CODE
AUTO CHANGE OVER
HEATING CORRECTION
SWITCHING
AUTO RESTART
REMOTE CONTROL CUSTOM
CODE RESERVE
(WHITE)
(BLACK) POWER SUPPLY PCB

– 6 –
OUTDOOR PRINTED CIRCUIT BOARD
CIRCUIT DIAGRAM
Model : AOU18RD

– 7 –
INDOOR P.C. BOARD LAYOUTS
CONTROLLER P.C. BOARD ASSEMBLY (MAIN PCB)
(Viewed from the solder side)
INDICATOR P.C. BOARD ASSEMBLY
(Viewed from the solder side) POWER SUPPLY P.C. BOARD ASSEMBLY
(Viewed from the solder side)

– 8 –
CONTROLLER P.C. BOARD ASSEMBLY (MAIN PCB)
(Viewed from the component side)
INDICATOR P.C. BOARD ASSEMBLY
(Viewed from the component side) POWER SUPPLY P.C. BOARD ASSEMBLY
(Viewed from the component side)

– 9 –
OUTDOOR P.C. BOARD LAYOUTS
CONTROLLER P.C. BOARD ASSEMBLY
(Viewed from the solder side)
(Viewed from the component side)