Installation Manual
SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED type
INVERTER
SERVICE
INSTRUCTION
Models
R410A
Indoor unit
Outdoor unit
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
AOU9RLQ
AOU12RLQ
AOU18CL
AOU18RL
CONTENTS
1. SPECIFICATION
ASU9/12RLQ, AOU9/12RLQ, ASU18C/RL, AOU18C/RL............................................... 01-01
2. DIMENSIONS
ASU9/12RLQ, AOU9/12RLQ.......................................................................................... 02-01
ASU18C/RL, AOU18C/RL............................................................................................... 02-02
3. REFRIGERANT SYSTEM DIAGRAM
ASU9/12RLQ, AOU9/12RLQ.......................................................................................... 03-01
ASU18C/RL, AOU18C/RL............................................................................................... 03-02
4. CIRCUIT DIAGRAM
ASU9/12RLQ, AOU9/12RLQ........................................................................................... 04-01
ASU18C/RL, AOU18C/RL............................................................................................... 04-02
5. DESCRIPTION OF EACH CONTROL OPERATION
1. COOLING OPERATION..............................................................................................
2. HEATING OPERATION..............................................................................................
3. DRY OPERATION......................................................................................................
4. AUTO CHANGEOVER OPERATION.........................................................................
5. INDOOR FAN CONTROL...........................................................................................
6. OUTDOOR FAN CONTROL.......................................................................................
7. LOUVER CONTROL...................................................................................................
8. COMPRESSOR CONTROL........................................................................................
9. TIMER OPERATION CONTROL................................................................................
10. ELECTRONIC EXPANSION VALVE CONTROL........................................................
11. TEST OPERATION CONTROL..................................................................................
12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )................................
13. FOUR-WAY VALVE EXTENSION SELECT...............................................................
14. AUTO RESTART........................................................................................................
15. MANUAL AUTO OPERATION ( Indoor unit body operation ).....................................
16. FORCED COOLING OPERATION............................................................................
17. COMPRESSOR PREHEATING..................................................................................
18. COIL DRY OPEARTION CONTROL..........................................................................
05-01
05-02
05-03
05-04
05-05
05-07
05-08
05-09
05-10
05-12
05-12
05-12
05-12
05-12
05-13
05-13
05-13
05-13
19. DEFROST OPERATION CONTROL.......................................................................... 05-14
20. OFF DEFROST OPERATION CONTROL.................................................................. 05-16
21. VARIOUS PROTECTIONS......................................................................................... 05-17
6. REFRIGERANT CAUTION -R410A1. R410A TOOLS............................................................................................................ 06-01
2. PRECAUTION FOR INSTALLATION......................................................................... 06-02
3. PRECAUTION FOR SERVICING............................................................................... 06-04
4. NEW REFRIGERANT R410A..................................................................................... 06-05
5. DEFFERENCE FROM CONVENTIONAL MODEL(R22) AND PRECAUTIONS........ 06-08
7. TROUBLE SHOOTING
1. WHEN THE UNIT DOES NOT OPERATE AT ALL.................................................... 07-01
2. SELF DIAGNOSIS FUNCTION.................................................................................. 07-02
3. TROUBLE SHOOTING METHOD
4. SELF-DIAGNOSIS FUNCTION AND CHECKING POINTS....................................... 07-03
5. SERIAL SIGNAL DIAGNOSIS.................................................................................... 07-07
6. IPM PROTECTION..................................................................................................... 07-08
7. TROUBLE SHOOTING OF REFRIGERANT CYCLE................................................. 07-09
8. APPENDING DATA
1. JUMPER SETTING OF INDOOR UNIT AND OUTDOOR UNIT................................ 08-01
2. OUTDOOR UNIT PRESSURE VALUE AND TOTAL ELECTRIC
CURRENT CURVE................................................................................................... 08-02
3. THERMISTOR RESISTANCE VALUES..................................................................... 08-06
4. CAPACITY/INPUT DATA........................................................................................... 08-07
9. REPLACEMENT PARTS
1. EXPLODED VIEW...................................................................................................... 09-01
2. INVERTER ASSEMBLY SPECIFICATION................................................................. 09-07
10. INSTALLATION MANUAL
R410A
WALL MOUNTED type
INVERTER
1 . SPECIFICATIONS
SP ECIF ICAT IO NS
ASU9RLQ ASU12RLQ ASU18CL
AOU9RLQ AOU12RLQ AOU18CL
MODEL NAME
POWER SOURCE
PHASE
Ph
1
1
1
1
FREQUENCY
Hz
60
60
60
60
VOLTAGE
V
208-230
208-230
208-230
208-230
2.64
3.51
5.28
5.28
(1.05~3.51)
(1.11~4.26)
(1.62~5.58)
(1.62~5.58)
9,000
12,000
18,000
18,000
kW
CAPACITY (230V)
Btu /h
POWER CONSUMPTION (230V)
W
960
1,730
1,730
(200~1,500)
(250~2,000)
(250~2,000)
3.05
3.93
3.66
3.05
13.4
12.5
10.4
10.4
Btu /(h.W)
21.00
21.00
19.00
19.00
RUNNING CURRENT
A
3.2
4.5
7.7
7.7
POWER FACTOR
%
90
93
98
98
MAXIMUM CURRENT
A
6.0
7.0
9.0
9.0
L /hr
1.3
1.8
2.8
2.8
Pt /h
2.7
3.8
5.9
5.9
HI
dB
39
41
44
44
ME
dB
34
35
38
38
LO
dB
29
29
32
32
QUIET
dB
20
20
25
25
dB
47
47
50
50
3.51
4.68
-
6.30
(0.87~5.28)
(0.90~6.18)
-
(1.32~8.52)
12,000
16,000
-
21,600
-
(4,600~29,000)
MOISTURE REMOVAL
OPERATING NOISE
(SOUND PRESSURE)
INDOOR UNIT
OUTDOOR UNIT
kW
CAPACITY
Btu /h
POWER CONSUMPTION
W
(3,000~18,000) (3,000~21,000)
830
1,250
-
1,930
(200~1,800)
(200~2,140)
-
(250~2,930)
3.28
W /W
4.25
3.75
-
Btu /(h.W)
14.5
12.8
-
11.2
Btu /(h.W)
11.00
10.55
-
10.00
RUNNING CURRENT
A
3.9
5.7
-
8.6
POWER FACTOR
%
92
95
-
98
MAXIMUM CURRENT
A
8.5
10.0
-
13.5
COP
HSPF
OPERATING NOISE
(SOUND PRESSURE)
INDOOR UNIT
HI
dB
40
41
-
42
ME
dB
35
35
-
37
LO
dB
28
28
-
32
QUIET
dB
21
21
-
27
dB
47
48
-
50
-
Rotary
Rotary
Rotary
Rotary
OUTDOOR UNIT
COMPRESSOR
TYPE
OUTPUT
INDOOR UNIT
AIR CIRCULATION
(FAN MODE)
OUTDOOR UNIT
OTHER
INDICATION
670
(200~1,200)
W /W
SEER
HEATING
PERFORMANCE
(3,600~12,000) (3,800~14,500) (5,500~19,000) (5,500~19,000)
Btu /(h.W)
EER
COOLING
PERFORMANCE
ASU18RL
AOU18RL
W
750
750
1,100
1,100
m3 /h
560
595
700
700
cfm
329
374
412
412
m3 /h
2,060
1,850
2,000
2,000
cfm
1,211
1,088
1,176
1,176
STARTING CURRENT
A
3.9
5.7
7.7
8.6
MINIMUM CIRCUIT AMPACITY
A
10
12
16
16
MAXIMUM OVERCURRENT PROTECTION
A
20
20
20
20
HIGH SIDE
PSI(MPa)
450(3.10)
450(3.10)
450(3.10)
450(3.10)
LOW SIDE
PSI(MPa)
240(1.65)
240(1.65)
240(1.65)
240(1.65)
°F
14~115
14~115
14~115
14~115
°C
-10~46
-10~46
-10~46
°F
5~75
5~75
-10~46
-
°C
-15~24
-15~24
-
-15~24
DESIGN PRESSURE
COOLING
PERMISSIBLE OUTDOOR
TEMPERATURE
HEATING
01-01
5~75
SP ECIF ICAT IO NS
MODEL NAME
CONNECTING METHOD
LIQUID SIDE
PIPE SIZE
GAS SIDE
STANDARD PIPE LENGTH
MAXIMUM PIPE LENGTH
INSTALLATION
CHARGE LESS PIPE LENGTH
AMOUNT OF ADDITIONAL CHARGE
MAXIMUM HEIGHT DIFFERENCE
NUMBER OF WIRE
DRAIN HOSE LENGTH
INDOOR UNIT
NET
OUTDOOR UNIT
WEIGHT
INDOOR UNIT
GROSS
(PACKAGING WEIGHT)
OUTDOOR UNIT
HEIGHT
INDOOR UNIT WIDTH
DEPTH
MAIN UNIT
DIMENSIONS
HEIGHT
OUTDOOR UNIT WIDTH
DEPTH
OTHER
INDICATION
HEIGHT
INDOOR UNIT WIDTH
DEPTH
PACKAGE
DIMENSIONS
HEIGHT
OUTDOOR UNIT WIDTH
DEPTH
KIND OF REFRIGERANT
Refrigerant
AMOUNT OF CHARGING
01-02
ASU9RLQ ASU12RLQ ASU18CL
AOU9RLQ AOU12RLQ AOU18CL
ASU18RL
AOU18RL
-
Flare
Flare
Flare
Flare
mm
6.35
6.35
6.35
6.35
in.
1/4
1/4
1/4
1/4
mm
9.52
9.52
12.7
12.7
in.
3/8"
3/8"
1/2"
1/2"
m
7.5
7.5
7.5
7.5
ft.
25
25
25
25
m
20
20
20
20
ft.
66
66
66
66
m
15
15
15
15
ft.
49
49
49
49
g /m
20
20
20
20
oz. /ft.
3 /16
3 /16
3 /16
3 /16
m
15
15
15
15
ft.
49
49
49
49
-
4
4
4
4
mm
580
580
580
580
in.
22-13/16"
22-13/16"
22-13/16"
22-13/16"
kg
9.5
9.5
9
9
lbs.
21
21
20
20
kg
35
37
40
40
lbs.
77
82
88
88
kg
12
12
12
12
lbs.
26
26
26
26
kg
39
41
44
44
lbs.
86
90
97
97
mm
283
283
275
275
10-13/16"
in.
11-1/8"
11-1/8"
10-13/16"
mm
790
790
790
790
in.
31-1/8"
31-1/8"
31-1/8"
31-1/8"
mm
230
230
215
215
in.
9-1/16"
9-1/16"
8-7/16"
8-7/16"
mm
540
540
578
578
in.
21-1/4"
21-1/4"
22-3/4"
22-3/4"
mm
790
790
790
790
in.
31-1/8"
31-1/8"
31-1/8"
31-1/8"
mm
290
290
300
300
in.
11-7/16"
11-7/16"
11-13/16"
11-13/16"
mm
316
316
290
290
in.
12-7/16"
12-7/16"
11-7/16"
11-7/16"
mm
835
835
835
835
in.
32-7/8"
32-7/8"
32-7/8"
32-7/8"
mm
360
360
345
345
in.
14-3/16"
14-3/16"
13-9/16"
13-9/16"
mm
625
625
648
648
in.
24-5/8"
24-5/8"
25-1/2"
25-1/2"
mm
919
919
910
910
in.
36-3/16"
36-3/16"
35-13/16"
35-13/16"
mm
385
385
380
380
in.
15-3/16"
15-3/16"
14-15/16"
14-15/16"
R410A
-
R410A
R410A
R410A
kg
0.95
1.05
1.15
1.15
lbs.
2-2/16
2-5/16
2-9/16
2-9/16
R410A
WALL MOUNTED type
INVERTER
2 . DIMENSIONS
DIMENSIONS
(unit : mm)
Models : ASU9RLQ / AOU9RLQ
ASU12RLQ / AOU12RLQ
INDOOR UNIT
790
283
230
OUTDOOR UNIT
290
790
56
288
540
17
356
02-01
DIMENSIONS
(unit : mm)
Models : ASU18CL / AOU18CL
ASU18RL / AOU18RL
790
275
215
48
508
320
347
20
540
10
578
790
02-02
125
66
300
R410A
WALL MOUNTED type
INVERTER
3 . REFRIGERANT SYSTEM DIAGRAM
REFRIGERANT SYSTEM DIAGRAM
Models : ASU9RLQ / AOU9RLQ
ASU12RLQ / AOU12RLQ
3-Way
valve
Heat exchanger
( INDOOR )
Muffler
Compressor
Muffler
2-Way
valve
4-Way valve
Strainer
Expansion valve
Heat exchanger
( OUTDOOR )
AOU9RLQ
(2Pass)
AOU12RLQ
(4Pass)
Cooling
Heating
03-01
Strainer
REFRIGERANT SYSTEM DIAGRAM
Models : ASU18CL / AOU18CL
ASU18RL/ AOU18RL
3-Way
valve
Heat exchanger
( INDOOR )
Compressor
Muffler
Sub-heat
exchanger
( INDOOR )
2-Way
valve
4-Way valve
Sub-accumulator
Strainer
Expansion valve
Heat exchanger
( OUTDOOR )
Cooling
Heating
03-02
Strainer
R410A
WALL MOUNTED type
INVERTER
4 . CIRCUIT DIAGRAM
C I R C U I T D I A GR A M
Models : ASU9RLQ / AOU9RLQ
ASU12RLQ AOU12RLQ
WHITE
4 4
5 5
RED
6 6
FAN MOTOR
CN4
BLUE
1 1
YELLOW
2 2
WHITE
3 3
BLACK
CN10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
CN2
1
2
3
4
5
6
7
8
9
1
2
3
4
5
CN6
RED
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
CN1
F. M.
1
2
3
4
5
6
7
8
9
CN3
CN201
DISPLAY BOARD
INDOOR UNIT
1
2 BLACK
CN5
WHITE
1
YELLOW
2
RED
3
BLUE
4
1 BLACK
BLACK
1
2
3
4
5
RED
ORANGE
YELLOW
PINK
BLUE
OUTDOOR UNIT
04-01
1
2
3
4
5
M STEP MOTOR
2
ROOM TEMPERATURE THERMISTOR
W3
RED
3
G
GREEN / YELLOW
2
GREEN W4
BLACK W2
WHITE W1
TERMINAL
1
1
2
3
4
5
BLACK
FUSE
3.15A
THERMAL FUSE
102
RED
SWITCH
BARISTOR
2 2
1 1
CN7
GRAY
3
1
WHITE
1
1
YELLOW
2
2
3
3
RED
4
4
BLUE
5
5
PIPE TEMPERATURE THERMISTOR
SW
POWER CIRCUIT
GRAY 3 3
4
2
1
2
3
4
5
AIR CLEAN UNIT
CONTROL BOARD
C I R CUI T DI AG RAM
Models : ASU18CL / AOU18CL
ASU18RL / AOU18RL
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
CN3
BLUE
RED
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
CN1
CN201
FM
3
CONTROLLER PCB ASSY
CN2
CN10
1
2
3
4
5
1
2
G
CN6
1
2
3
4
5
CN5
1
2
VARISTOR
FUSE
3.15A
W3
1
2
3
4
5
6
2
RED
W2
1
YELLOW
2
WHITE
3
BLACK
4
5
6
1
TO OUTDOOR UNIT
BLACK
SW
POWER CIRCUIT
CN7
W1
WHITE
INDICATOR PCB ASSY
RED
GRAY
3 3
2 2
1 1
GRAY
THERMAL FUSE
102
TERMINAL
FAN MOTOR
INDOOR UNIT
1
2
3
4
5
1
2
3
4
5
1
2
3 M
4
5
STEP MOTOR
PIPE TEMPERATURE
THERMISTOR
ROOM TEMPERATURE
THERMISTOR
RED
ORANGE
YELLOW
PINK
BLUE
BLACK
BLACK
BLACK
BLACK
GREEN /
YELLOW
OUTDOOR UNIT
YELLOW
YELLOW
REACTOR
RED
2 1
2 1
WHITE
RED
W7
W8
W9
W10
W11
1
2
CN801 3
4
5
6
PIPE TEMP. THERMISTOR
BLACK
BLACK
BROWN
BROWN
1
2
3
4
RED
WHITE
BLACK
1
2
3 CN71
4
R(R)
1 1
2 2
3 3
WHITE
S(S)
BLACK
1
2
3
4
5
6
C M COMPRESSOR
C(T)
RED
BLACK
WHITE
YELLOW
BLUE
FM
FAN MOTOR
EV
EXPANSION VALVE
4WV
4-WAY VALVE
DISCHARGE PIPE TEMP. THERMISTOR
CONTROLLER PCB ASSY
OUTDOOR TEMP. THERMISTOR
BLACK
BLACK
1 1
2 2 CN70
3 3
WHITE
RED
WHITE
FUSE
5A-250V
TERMINAL
1
2
3
CN40
CN30
1 1
2 2
3 3 BLACK
W4
4 5
(L) (N)
1
2
3
4
5
6
W2
W1
FUSE 20A-250V
GREEN
BLACK
BLACK
BLACK
BLACK
RED
BROWN
BLUE
ORANGE
YELLOW
WHITE
1
2
3
4
5
6
BLACK
W3
G
TO INDOOR UNIT POWER SUPPLY
04-02
R410A
WALL MOUNTED type
INVERTER
5 . DESCRIPTION OF EACH
CONTROL OPERATION
1. COOLING OPERATION
1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is 4°F(2°C) higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is 5°F(2.5°C) lower than a set temperature, the compressor will be
stopped.
* When the room temperature is between +4°F(+2°C) to -5°F(-2.5°C) of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
However, the maximum frequency is limited in the range shown in Figure 1 based on the
fan speed mode and the outdoor temperature.
( Table 1 : Compressor Frequency Range )
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
minimum
frequency
18Hz
18Hz
18Hz
18Hz
maximum
frequency
61Hz
80Hz
70Hz
70Hz
maximum
frequency
80Hz
96Hz
90Hz
90Hz
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outside air
temperature
Outside air
temperature
9RLQ
97°F(36°C)
93°F(34°C)
A zone
90°F(32°C)
86°F(30°C)
B zone
12RLQ
70°F(21°C)
66°F(19°C)
C zone
54°F(12°C)
50°F(10°C)
D zone
36°F(2°C)
32°F(0°C)
18CL
E zone
F zone
18RL
A zone
B zone
C zone
D zone
E zone
F zone
A zone
B zone
C zone
D zone
E zone
F zone
A zone
B zone
C zone
D zone
E zone
F zone
A zone
B zone
C zone
D zone
E zone
F zone
Hi
80Hz
80Hz
80Hz
51Hz
51Hz
51Hz
96Hz
96Hz
96Hz
57Hz
57Hz
57Hz
90Hz
90Hz
90Hz
58Hz
58Hz
58Hz
90Hz
90Hz
90Hz
58Hz
58Hz
58Hz
Me
61Hz
61Hz
61Hz
42Hz
42Hz
42Hz
61Hz
61Hz
61Hz
42Hz
42Hz
42Hz
45Hz
45Hz
45Hz
38Hz
38Hz
38Hz
45Hz
45Hz
45Hz
38Hz
38Hz
38Hz
Lo
51Hz
51Hz
51Hz
36Hz
36Hz
36Hz
51Hz
51Hz
51Hz
36Hz
36Hz
36Hz
42Hz
42Hz
42Hz
34Hz
34Hz
34Hz
42Hz
42Hz
42Hz
34Hz
34Hz
34Hz
Quiet
33Hz
33Hz
33Hz
27Hz
27Hz
27Hz
33Hz
33Hz
33Hz
27Hz
27Hz
27Hz
30Hz
30Hz
30Hz
24Hz
24Hz
24Hz
30Hz
30Hz
30Hz
24Hz
24Hz
24Hz
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency .
The room temperature is controlled 2°F(1°C) lower than the setting temperature for 40 minutes
after starting the operation.
After 40 minutes, it is controlled based on the normal setting temperature.
05-01
2. HEATING OPERATION
2-1 HEATING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is lower by 6°F(3°C) than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is higher 5°F(2.5°C) than a set temperatire, the compressor will be
stopped.
* When the room temperature is between +4°F(+2°C) to -6°F(-3°C) of the setting temperature,
the compressor frequency is controlled within the range shown in Table2.
However, the maximum frequency is limited in the range shown in Figure 2 based on the
fan speed mode and the outdoor temperature.
( Table 2 : Compressor Frequency Range )
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
minimum
frequency
18Hz
18Hz
18Hz
maximum
frequency
130Hz
130Hz
119Hz
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
Outside air
temperature
Outside air
temperature
9RLQ
66°F(19°C)
C zone
63°F(17°C)
12RLQ
54°F(12°C)
18CL
57°F(14°C)
B zone
A zone
18RL
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
Hi
130Hz
130Hz
130Hz
130Hz
130Hz
130Hz
119Hz
119Hz
119Hz
Me
96Hz
96Hz
96Hz
96Hz
96Hz
96Hz
90Hz
90Hz
90Hz
Lo
80Hz
80Hz
80Hz
80Hz
80Hz
80Hz
70Hz
70Hz
70Hz
Quiet
68Hz
54Hz
45Hz
68Hz
54Hz
45Hz
58Hz
58Hz
58Hz
* The room temperature is controlled 4°F(2°C) higher than the setting temperature for 60 minutes
after starting the operation.
After 60 minutes, it is controlled based on the normal setting temperature.
05-02
3. DRY OPERATION
3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to the temperature, set temperature,
and room temperature variation which the room temperature sensor of the indoor unit body has
detected as shown in the Table 3. However, after the compressor is driven, the indoor unit shall
run at operation frequency of 58Hz, for a minute.
( Table 3 : Compressor frequency )
Operating
frequency
33Hz
33Hz
24Hz
24Hz
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
( Fig.3 : Compressor Control based on Room Temperature )
room
temperature
compressor ON
room
temperature
Ts+3°F(1.5°C)
Ts+1°F(0.5°C)
compressor OFF
( Fig.4 : Indoor Fan Control )
Compressor
ON
OFF
Indoor fan
Dry air flow
S-Lo
OFF
10
30
60
180
60
180
60
10
30
When an IAQ works in 9/12LA models, it operate with S-LO without stopping.
05-03
(SEC)
4. AUTO CHANGEOVER OPERATION
When the air conditioner is set to the AUTO mode by remote cintrol, operation starts in the optimum
mode from amoung the HEATING, COOLING, DRY and MONITORING modes. During operation, the
optimum mode is automatically swiched in accordance with temperature changes. The temperature
can be set between 64°F(18°C) and 88°F(30°C) in 2°F(1°C) steps.
1 .When operation starts, only the indoor and outdoor fans are operated for 1 minute. After 1 minute,
the room temperature and outside air temperature are sensed and the operation mode is
selected in accordance with the table below.
( Fig.5 : Outside air temperature zone selection )
C zone
90°F(32°C)
B zone
14°F(-10°C)
A zone
( Table.4 Operation mode selection table)
Outside air temperature (TO)
A zone
B zone
C zone
Monitoring
Cooling
(automatic dry)
Cooling
(automatic dry)
Monitoring
Monitoring
Monitoring
*Heating
*Heating
Monitoring
Room temperature(TB)
TB > TS+4°F(2°C)
TS+4°F(2°C) TB
TS - 4°F(2°C)
TB<TS- 4°F(2°C)
*18CL is Monitoring
2 .When COOING was selected at 1 , the air conditioner operates as follow:
The same operation as COOLING OPERATION of item 1 above is performed.
When the room temperature has remained at (set tempareure -2°F(1°C)) for 8 minutes, operation is
automatically switched to DRY and the same operation as DRY OPERATION of item 3 above
is performed.
If the room temperature reaches (set temperature+4°F(2°C) during DRY operation, operation returns to
COOLING operation.
3 .When HEATING was selected at 1 , the same operation as HEATING OPERATION of item 2
above is performed.
4 When the compressor was stopped for 6 consecutive minutes by the temperature control function
after the COOLING or HEATING operation mode was selected at 1 above, operation is switched
to MONITORING and the operation mode is selected again.
05-04
5. INDOOR FAN CONTROL
(1).Fan speed
( Table 5 : Indoor Fan Speed )
ASU9RLQ
Operat ion mode
Heating
Cooling
Fan
ASU12RLQ
Air flow mode
Speed (rpm)
Hi
Me+
Me
Lo
Quiet
Cool air
prevention
S-Lo
Hi
Me
Lo
Quiet
1390
1350
1200
1000
760
Dry
Operation mode
Heating
760
480
1300
1120
950
700
700
Cooling
Fan
Heating
Cooling
Fan
Dry
Speed (rpm)
Hi
Me+
Me
Lo
Quiet
Cool air
prevention
S-Lo
Hi
Me
Lo
Quiet
1440
1350
1200
1000
760
Dry
ASU18CL
Operation mode
Air flow mode
760
480
1370
1150
950
700
700
ASU18RL
Air flow mode
Speed (rpm)
Hi
Me+
Me
Lo
Quiet
Cool air
prevention
S-Lo
Hi
Me
Lo
Quiet
-
Operation mode
Heating
480
1480
1260
1040
850
850
Cooling
Fan
Dry
Air flow mode
Speed (rpm)
Hi
Me+
Me
Lo
Quiet
Cool air
prevention
S-Lo
Hi
Me
Lo
Quiet
1480
1420
1300
1110
950
850
480
1480
1260
1040
850
850
(2).FAN OPERATION
The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH, while the indoor
fan only runs.
When Fan mode is set at (Auto), it operates on (MED) Fan Speed.
05-05
(3).COOLING OPERATION
Switch the airflow [AUTO], and the
indoor fan motor will run according
to a room temperature, as shown in
Figure 6.
On the other hand, if switched in
[QUIET], the indoor motor
[HIGH]
will run at a constant airflow of [COOL]
operation modes QUIET, LOW, MED,
HIGH, as shown in Table 5.
(Fig.6)
airflow change - over ( Cooling:AUTO )
When the room
temperature rises
HIGH mode
+5°F(+2.5°C)
+4°F(+2°C)
MED mode
+3°F (+1.5°C)
+2°F(+1°C)
LOW mode
When the room
temperature lowers
(4).DRY OPERATION
Refer to the table 4.
Durring the dry mode operation, the fan speed
setting can not be changed.
(Room temperature) D (Setting temperature)
(5).HEATING OPERATION
Switch the airflow [AUTO], and the
indoor fan motor will run according
to a room temperature, as shown in
Figure 7.
On the other hand, if switched
[QUIET], the indoor motor
[HIGH]
will run at a constant airflow of [HEAT]
operation modes QUIET, LOW, MED,
HIGH, as shown in Table 5.
(Fig.7)
airflow change - over ( Heating:AUTO)
When the room
temperature rises
LOW mode
-2°F(-1°C)
-3°F(-1.5°C)
MED mode
-4°F(-2°C)
-5°F(-2.5°C)
MED + mode
When the room
temperature lowers
(Room temperature) D (Setting temperature)
(6).COOL AIR PREVENTION CONTROL (Heating mode)
The maximum value of the indoor fan speed is set as shown in Figure 8, based on the detected
temperature by the indoor heat exchanger sensor on heating mode.
(Fig.8 : Cool Air Prevention Control)
Indoor heat exchanger
temperature
117°F(47°C)
104°F(40°C)
Indoor heat exchanger
temperature
Hi
Me+
104°F(40°C)
99°F(37°C)
93°F(34°C)
Lo
Cool air prevention
90°F(32°C)
86°F(30°C)
82°F(28°C)
S-Lo
05-06
6. OUTDOOR FAN CONTROL
(1). Fan Speed
( Table 6 : Outdoor fan speed )
ZONE
ASU9RLQ
A-D
E
F
ASU12RLQ
A-D
E
F
ASU18CL
A-D
E
F
ASU18RL
(rpm)
Cooling
Dry
800/760/470
500
400/280
400/280
200
200
800/760/470
500
400/280
400/280
250/200
250/200
860/820/670/500
500
400/340/280
400/340/280
280/250/230
280/250/230
860/820/670/500
500
E
400/340/280
400/340/280
F
280/250/230
280/250/230
A-D
Heating
760/680/470
760/680/470
-
820/750/670/450
Refer to Fig1.
(1). Fan Speed
* It runs at 500(A-D ZONE)/200(E,F ZONE) rpm for 20 seconds after starting up the outdoor fan.
* The outdoor fan speed mentioned avobe depends on the compressor frequency.
(When the compressor frequency increases, the outdoor fan speed also changes to the higher
speed. When the compressor frequescy decreases, the outdoor fan speed also changes to the
lower speed.)
* Outdoor temperature falls, and if it becomes E and F zone(Refer to Fig1), rotations of fan speed
will fall.
* After the defrost control is operated on the heating mode, the fan speed keeps at the higher speed
as table 7 without relating to the compressor frequency.
( Table 7 : Outdoor fan speed after the defrost )
Min
ASU9RLQ
800rpm
ASU12RLQ
900rpm
ASU18CL
ASU18RL
950rpm
05-07
7. LOUVER CONTROL
(1). VERTICAL LOUVER CONTROL
(Function Range)
Each time the button is pressed, the air direction range will change as follow:
(Fig 9: Air Direction Range)
(Operation Range)
Cooling / Dry mode
Heating mode
Fan mode
Use the air direction adjustments within the ranges shown above.
The vertical airflow direction is set automatically as shown, in accordance with the type of operation
selected.
Cooling / Dry mode Horizontal flow
Heating mode
Downward flow
When the temperature of the air being blown out is low at the start of heating operation or during
defrosting, the airflow direction temporarily becomes
to prevent cold air being blown onto the body.
During use of the Cooling and Dry modes, do not set the Air Flow Direction Louver in the Heating
range (
) for long period of time, since water vapor many condense near the outlet louvers and
drop of water may drip from the air conditioner. During the Cooling and Dry modes, if the Air Flow
Direction Louvers are left in the hating range for more than 30minutes, they will automatically
return to position .
During Monitor operation in AUTO CHANGEOVER mode, the airflow direction automatically
becomes , and it cannot be adjusted.
(2). SWING OPERATION
When the swing signal is received from the remote controller, the vertical louver starts to
swing.
(Swinging Range)
Cooling mode / Dry mode / Fan mode(
Heating mode / Fan mode(
)
)
When the indoor fan is either at S-lo or Stop mode, the swinging operation is interrrupted
and the louver stops at the memorized position.
05-08
8. COMPRESSOR CONTROL
(1). OPEARTION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the table 8.
(Table 8 : Compressor Operation Frequency Range)
Cooling
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
Heating
Dry
Min
Max
Min
Max
18Hz
18Hz
18Hz
18Hz
80Hz
96Hz
90Hz
90Hz
18Hz
18Hz
18Hz
130Hz
130Hz
119Hz
33Hz
33Hz
24Hz
24Hz
(2). OPEARTION FREQUENCY CONTROL AT START UP
The compressor frequency soon after the start-up is controlled as shown in the figure 10.
(Fig.10 : Compressor Control at Start-up)
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Time
Time
Time
Time
Time
Time
(Frequency)
Frequency
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
56Hz
56Hz
40Hz
40Hz
Frequency
74Hz
74Hz
59Hz
59Hz
Frequency
Frequency
Frequency
Frequency
87Hz
87Hz
72Hz
72Hz
97Hz
97Hz
80Hz
80Hz
108Hz
108Hz
101Hz
101Hz
119Hz
119Hz
110Hz
110Hz
Time
Time
Time
Time
Time
60sec
60sec
40sec
40sec
60sec
60sec
40sec
40sec
180sec
180sec
60sec
60sec
60sec
60sec
150sec
150sec
(Time)
Time
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
80sec
80sec
60sec
60sec
05-09
60sec
60sec
60sec
60sec
9. TIMER OPEARTION CONTROL
The table 9 shows the available timer setting based on the product model.
(Table 9 : Timer Setting)
ON TIMER / OFF TIMER
PROGRAM TIMER
SLEEP TIMER
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
(1). OPEARTION FREQUENCY RANGE
OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
Operation mode
Stop mode
Set time of timer
ON timer : When the clock reaches the set time, the air conditioner will be turned on.
Operation mode
Stop mode
Set time of timer
(2). PROGRAM TIMER
The program timer allows the OFF timer and ON timer to be used in combination one time.
Operation mode
Operation mode
Operation mode
Stop mode
Stop mode
Set time
Set time
Set time
Stop mode
Set time
Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest
to the clock's current timer setting. The order of operations is indicated by the arrow in the remote
control unit's display.
SLEEP timer operation cannot be combined with ON timer operation.
05-10
(3). SLEEP TIMER
If the sleep is set, the room temperature is monitored and the operation is stopped automatically.
If the operation mode or the set temperature is change after the sleep timer is set, the operation is
continued according to the changed setting of the sleep timer from that time ON.
In the cooling operation mode
When the sleep timer is set, the setting temperature is increased 2°F(1°C).
It increases the setting temperature another 2°F(1°C) after 1 hour.
After that, the setting temperature is not changed and the operation is stopped at the time
of timer setting.
Set temperature rises
( Ts : Set temperature )
+4°F(+2°C)
+2°F(+1°C)
Ts
Stop of operation
Set
60min
In the heating operation mode
When the sleep timer is set, the setting temperature is decreased 2°F(1°C).
It decreases the setting temperature another 2°F(1°C) every 30 minutes.
Upon lowering 8°F(4°C), the setting temperature is not changed and the operation stops at
the time of timer setting.
Set temperature lowers
( Ts : Set temperature )
Ts
-2°F(-1°C)
-4°F(-2°C)
-6°F(-3°C)
-8°F(-4°C)
Stop of operation
Set
30min
05-11
30min 30min
10. ELECTRONIC EXPANSION VALVE CONTROL
The most proper opening of the electronic expansion valve is calculated and controlled under the
present operating condition based on the following values.
The compressor frequency, the temperatures detected by the discharge temperature sensor, the
indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature
sensor.
The pulse range of the electronic expansion valve control is between 60 to 480 pulses.
The expansion valve is set at 480 pulses after 110 seconds of stopping compressor.
At the time of supplying the power to the outdoor unit, the initialization of the electronic
expansion valve is operated (528 pulses are input to the closing direction).
11. TEST OPERATION CONTROL
Under the condition where the air conditioner runs, press the test operation button of the remote
control, and the test operation control mode will appear. During test running, the operation lamp
and timer lamp of the air conditioner body twinkle simultaneously. Set the test operation mode,
and the compressor will continue to run regardless of whether the room temperature sensor detects.
The test operation mode is released if 60 minutes have passed after setting up the test operation.
12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is
stopped, even if any operation is given.
13. FOUR-WAY VALVE EXTENSION SELECT
At the time when the air conditioner is switched from the cooling mode to heating mode, the
compressor is stopped, and the four-way valve is switched in 2 minutes and 20 seconds later after
the compressor stopped.
14. AUTO RESTART
When the power was interrupted by a power failure, etc. during operation, the operation contents
at that time are memorized and when power is recovered, operation is automatically started with
the memorized operation contents.
When the power is interrupted and recovered during timer operation, since the timer operation time
is shifted by the time the power was interrupted, an alarm is given by blinking (7 sec ON/2 sec OFF)
the indoor unit body timer lamp.
[Operation contents memorized when the power is interrupted]
Operation mode
Set temperature
Set air flow
Timer mode and timer time
Set air flow Direction
Swing
Air clean(Only 9/12LA model)
05-12
15. MANUAL AUTO OPERATION (Indoor unit body operation)
If MANUAL AUTO Button is set, the operation is controlled as shown in Table 10.
If the remote control is lost or battery power dissipated, this function will work without the remote
control.
(Table 10)
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
Manual auto operation
Auto changeover
Auto
Continuous (No timer setting available)
75°F(24°C)
Standard
OFF
Forced cooling operation
Cooling
Hi
Room Temp is not controlled
Horizontal
OFF
16. FORCED COOLING OPERATION
Forced cooling operatio is started when pressing MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON
and 1 second OFF on both operation LED and timer LED (same as test operation).
Forced cooling operation is released after 60 minutes of starting operation.
The FORCED COOLING OPERATION will start as shown in Table10.
17. COMPRESSOR PREHEATING
When the outdoor heat exchanger temperature is lower than temperature and the heating operation has
been stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started, and when the outdoor temperature rises to temperature or greater, preheating
is ended.
(Table 11 : Preheating Operation / Release Temperature)
Temperature Temperature
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
41°F(5°C)
41°F(5°C)
41°F(5°C)
45°F(7°C)
45°F(7°C)
45°F(7°C)
18. COIL DRY OR AIR CLEAN OPERATION CONTROL
(1). COIL DRY OPERATION CONTROL (ASU18RL model only)
The coil-dry operation functions by pressing COIL DRY button on the remote controller.
The coil-dry operation is consisted of 3 cycles of [Fan operation 3 minutes / Heating operation
2 minutes], and Fan operates for 3 minutes at last before ending the air conditioner operation.
(It takes 18 minutes to complete the coil-dry operation.)
(2). AIR CLEAN OPERATION CONTROL (ASU9/12RLQ model only)
The coil-dry operation functions by pressing AIR CLEAN button on the remote controller.
It continues from COIL DRY operation, it turns on electricity to AIR CLEAN UNIT, sterilization is
performed for 15 minutes.
Indoor unit fan motor operation under AIR CLEAN operation : The cycle of 480rpm Fixation
5 sec ON /1 min OFF is repeated.
(It takes 33 minutes to complete the AIR CLEANING operation.)
(Table 12 : COIL-DRY or AIR-CLEAN Operating Functions)
Indoor Fan Speed
ASU9RLQ
ASU12RLQ
ASU18RL
900rpm
900rpm
900rpm
480rpm
480rpm
-
Compressor
Frequency
36Hz
36Hz
34Hz
05-13
Louver
Position
Main Unit
Indication
COIL-DRY or AIR-CLEAN indication : ON
Other indication : OFF
19. DEFROST OPERATION CONTROL
(1). CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts when the outdoor heat exchanger temperature sensor detects
the temperature lower than the values shown in Table 13.
(Table 13 : Condition of starting Defrost Operation)
1ST time defrosting
after starting
operation
Defrosting after 2 nd
time upon starting
operation
Compressor operating time
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
Less than 20 minutes 20 to 60 minutes 60 minutes to 4 hours
After 4 hours
- 16°F(-9°C)
- 16°F(-9°C)
- 16°F(-9°C)
- 27°F(-3°C)
- 27°F(-3°C)
- 27°F(-3°C)
Does not operate
- 23°F(-5°C)
- 23°F(-5°C)
- 23°F(-5°C)
Compressor operating time
Less than 35 minutes
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
Does not operate
35 minutes to
4 hours
- 21°F(-6°C)
- 21°F(-6°C)
- 21°F(-6°C)
(2). CONDITION OF THE DEFROST OPERATION COMPLETION
Defrost operation is released when the conditions become as shown in Table 14.
(Table 14 : Defrost Release Condition)
Release Condition
ASU9RLQ
Outdoor heat exchanger temperature sensor value is higher than 61°F(16°C) or
Compressor operation time has passed 15 minutes.
ASU12RLQ
Outdoor heat exchanger temperature sensor value is higher than 61°F(16°C) or
Compressor operation time has passed 15 minutes.
ASU18RL
Outdoor heat exchanger temperature sensor value is higher than 50°F(10°C) or
Compressor operation time has passed 15 minutes.
05-14
After 4 hours
- 27°F(-3°C)
- 27°F(-3°C)
- 27°F(-3°C)
Defrost Flow Chart
The defrosting shall proceed by the integrating operation time and outdoor heat exchanger
temperature as follows.
Heating operation start : Compressor ON
(Not defrosted for 10 minutes)
(In case of 1st defrost)
(In case of 2nd and later defrost)
Compressor integrating
operation:
Over 20 minutes to
below 60 minutes
Compressor integrating
operation:
Over 60 minutes to
below 240 minutes
Compressor integrating
operation:
Over 240 minutes
Compressor integrating
operation:
Over 35 minutes to
below 240 minutes
Outdoor heat exchanger
temperature:
Below - 16°F(-9°C)
Outdoor heat exchanger
temperature:
Below - 23°F(-5°C)
Outdoor heat exchanger
temperature:
Below - 27°F(-3°C)
Outdoor heat exchanger Outdoor heat exchanger
temperature:
temperature:
Below - 21°F(-6°C)
Below - 27°F(-3°C)
Defrost start
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Compressor OFF
Outdoor fan motor OFF
30 sec later four - way valve OFF
36 sec later compressor ON
Outdoor heat exchanger temperature:
Over 50°F(10°C) / 61°F(16°C)
or
Compressor ON time:
Over 15 minutes
Defrost end
05-15
Compressor integrating
operation:
Over 240 minutes
20. OFF DEFROST OPEARTION CONTROL
When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat
exchanger, the defrost operation will proceed automatically. In this time, if indoor unit operation
lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost,
and then stop.
(1). OFF DEFROST OPERATION CONDITION
In heating operation, the outdoor heat exchanger temperature is less than - 25°F(-4°C), and
compressor operation integrating time lasts for more than 30 minutes.
(2). OFF DEFROST END CONDITION
Release Condition
ASU9RLQ
Outdoor heat exchanger temperature sensor value is higher than 61°F(16°C) or
Compressor operation time has passed 15 minutes.
ASU12RLQ
Outdoor heat exchanger temperature sensor value is higher than 61°F(16°C) or
Compressor operation time has passed 15 minutes.
ASU18RL
Outdoor heat exchanger temperature sensor value is higher than 50°F(10°C) or
Compressor operation time has passed 15 minutes.
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature:
Below - 25°F(-4°C)
and
Compressor integrating operation:
Over 30 minutes
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 50°F(10°C) / 61°F(16°C)
or
Compressor ON time:
Over 15 minutes
Defrost end
05-16
21. VARIOUS PROTECTIONS
(1). DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas
temperature.
When the discharge temperature becomes higher than Temperature ,the compressor frequency
is decreased 20 Hz, and it continues to decrease the frequency for 20 Hz every 120 seconds until
the temperature becomes lower than Temperature .
When the discharge temperature becomes lower than Temperature ,the control of the control of the
compressor frequency is released.
When the discharge temperature becomes higher than Temperature
and the indoor unit LED starts blinking.
,the compressor is stopped
(Table 15 : Discharge Temperature Over Rise Prevension Control / Release Temperature)
Temperature
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
Temperature
Temperature
219°F(104°C)
219°F(104°C)
219°F(104°C)
219°F(104°C)
214°F(101°C)
214°F(101°C)
214°F(101°C)
214°F(101°C)
230°F(110°C)
230°F(110°C)
230°F(110°C)
230°F(110°C)
(2). CURRENT RELEASE CONTROL
The compressor frequency is controlled so that the outdoor unit input current does not exceeds
the current limit velue that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
(Table 16 : Current Release Operation Value / Release Value)
[ Heating ] OT : Outdoor Temperature
ASU9RLQ
ASU12RLQ
ASU18CL
OT (Control / Release)
OT (Control / Release)
OT (Control / Release)
6.5A / 6.0A
63°F(17°C)
6.5A / 6.0A
63°F(17°C)
8.0A / 7.5A
54°F(12°C)
8.0A / 7.5A
8.0A / 7.5A
[ Cooling / Dry ]
/
8.5A / 8.0A
8.0A / 7.5A
7.0A / 6.5A
63°F(17°C)
54°F(12°C)
41°F(5°C)
OT (Control / Release)
/
63°F(17°C)
54°F(12°C)
41°F(5°C)
ASU18RL
9.0A / 8.5A
54°F(12°C)
/
41°F(5°C)
9.5A / 9.0A
10.5A / 10.0A
41°F(5°C)
/
12.0A / 11.5A
OT : Outdoor Temperature
ASU9RLQ
OT (Control / Release)
ASU12RLQ
OT (Control / Release)
3.5A / 3.0A
115°F(46°C)
4.0A / 3.5A
ASU18RL
OT (Control / Release)
4.5A / 4.0A
115°F(46°C)
5.0A / 4.5A
104°F(40°C)
5.5A / 5.0A
OT (Control / Release)
4.0A / 3.5A
115°F(46°C)
104°F(40°C)
ASU18CL
4.5A / 4.0A
115°F(46°C)
6.0A / 5.5A
104°F(40°C)
6.5A / 6.0A
8.5A / 8.0A
05-17
6.0A / 5.5A
104°F(40°C)
8.5A / 8.0A
(3). ANTIFREEZING CONTROL (Cooling and Dry mode)
The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than Temperature .
Then, the anti-freezing control is released when it becomes higher than Temperature .
(Table 17 : Anti-freezing Protection Operation / Release Temperature)
Temperature
Temperature
39°F(4°C)
39°F(4°C)
A-D
E,F
45°F(7°C)
55°F(13°C)
(4). COOLING PRESSURE OVERRISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to temperature
compressor is stopped and trouble display is performed.
or greater, the
(Table 18 : Cooling Pressure Over Rise Protection Function Temperature)
Temperature
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
153°F(67°C)
153°F(67°C)
153°F(67°C)
153°F(67°C)
(5). HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )
On heating mode, the compressor frequency is controlled as following based on the
detection value of the indoor heat exchanger temperature sensor.
Temp
[ Control System ]
Indoor heat exchange
temperature
Refer to below
Temperature
Temperature
The compressor frequency is
precisely controlled so that
it does not exceeds Temperature .
ASU9RLQ
ASU12RLQ
ASU18CL
ASU18RL
Temp
Temp
Temp
131°F(55°C) 127°F(53°C) 126°F(52°C) 122°F(50°C)
131°F(55°C) 127°F(53°C) 126°F(52°C) 122°F(50°C)
131°F(55°C) 127°F(53°C) 126°F(52°C) 122°F(50°C)
Temperature
Temperature
It returns to the normal operation
Compressor Operation
[ ASU9/12RLQ ]
45Hz
46Hz or greater
Frequency down every 120 seconds
39 45Hz
26 38Hz
25Hz
18 25Hz
OFF
05-18
[ ASU18RL ]
39Hz or greater
30 38Hz
19 29Hz
18Hz
38Hz
Frequency down every 120 seconds
18Hz
OFF
R410A
WALL MOUNTED type
INVERTER
6 . REFRIGERANT CAUTION -R410A-
2. PRECAUTION FOR INSTALLATION
Precaution for installation
Pipe diameter, recommended material and wall thickness
Nominal diameter
(in)
Outside diameter
(mm)
1/4"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1 1/8" 1 1/4" 1 3/8" 1 1/2"
6.35
9.52
12.70 15.88 19.05 22.22 25.40 28.58 31.75 34.92 38.10
COPPER
Material
JIS H3300-C1220T-O or equivalent
Wall thickness 3)
(mm)
0.8
0.8
0.8
1.0
COPPER
1)
1.2
JIS H3300-C1220T-H or equivalent
1.0
1.0
1.0
1.1
1.2
2)
1.3
> 33 (N/mm2 ); 2) Allowable tensile stress > 61 (N/mm2 ); 3) Design pressure 4.2MPa.
1) Allowable tensile stress =
=
The pipe must be properly pressure rated for R410A
The pipe must be an air-conditioning refrigerant pipe.
Flare and flare nuts
Diameter
1/4 ” (6.35mm)
Refrigerant R410A
R22
/R407C
3/8 ” (9.52mm)
1/2 ” (12.7mm)
R410A
R22
/R407C
R410A
R22
/R407C
3/8 ” (15.88mm)
R410A
R410A
R22
/R407C
19.4
24
29
23.7
A
9.1
9.0
13.2
13.0
16.6
B
13
12
20
15
13
16.2
20
19.7
25
C
12
11
16
12.5
19
16
22
23
20
26
24
29
27
Nut width
17
22
B
A
C
Do not use existing (for R22) pipes
•
Be sure to use new pipes when replacing
conventional (R22) model with HFC
(R407C, R410A) model.
•
If you use existing pipes, it may cause
resolution of compressor oil by remaining
mineral oil.
06-02
3/4 ” (19.05mm)
R22
/R407C
29
24
24
36
Always use the flare nut that is packed
with the product.
3. PRECAUTION FOR SERVICING
Feature 1 Refrigerant oil is different from before.
Refrigerant oil for
New Refrigerant
Synthetic oil
Ether
Esther
Previously it was
mineral oil.
Precaution on Tools
Different point from
previous one
Absorbent character
is high.
Contamination occurs
when mixed withe other
kind of oil.
Use the gauge manifold and charge hose
for New Refrigerant(HFC), which shall
be segregated from those of R22.
Attach the stop valve on the vacuum pump
and avoid the oil from reverse frow.
It is necessary to use the vacuum pump
which can obtain the high vacuum condition.
R410A
R22
Feature 2 New Refrigerant has Approx 1.6 times higher pressure than previous refrigerant.
R410A
High Pressure
1.6 times of R22.
Different point from
previous one
Precaution on Tools
Diameter of Service port
has been changed from
1/4 Flare to 5/16 Flare.
JIS standard of flare
process It became lager
To keep thethickness of
copper tube.
(1/4,3/3=more than 0.8mm)
06-04
It requires the gauge manifold and charge
hose exclusively for R410A.
It requires the flare tool and torque wrench
that satisfies New JIS standard.
Previous flare tool + flare adapter can be used as well.
4. NEW REFRIGERANT R410A
* What is HFC ?
Phase-out schedule of HCFC according to Montreal protocol
(%)
100
100% =(HCFC consumption of 1989) +
(CFC consumption of 1989) x 2.8%
80
65%
60
total abolition
35%
40
20
only service use
started control
10%
0.5%
0
1996 2000
2004
2010
2015
06-05
2020
2030 (Year)
5. DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS
OIL
• Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils
conventionally used for R22.
• As these new synthetic oils are easily influenced by moisture and dusts, they must be treated more carefully than the conventional lubricating oils.
CAUTION
For installation/servicing, take more precautions than the case of conventional refrigerants to avoid moisture
and dusts entering the refrigerant circuit. Also, for storing parts, more precautions must be taken.
COMPRESSOR
• Use better grade of material for sliding parts for securing good lubrication of sliding part as HFC
refrigerant does not contain chloride.
• Review insulating materials
• Increase pressure resistance strength
CAUTION
Check if the compressor is suitable for the refrigerant (model) when replacing. Complete welding within 15
minutes after opening the cap when replacing.
HEAT EXCHANGER
• Review the water,contaminants controlling level
• Use thinner tube to increase pressure Increase capacity for resistance strength (only outdoor unit)
improving performance
CAUTION
During storage, due care must be taken so that foreign matters such as dust and water do not enter.
4-WAY VALVE
• Review materials
CAUTION
Check if the valve is suitable for the refrigerant (model) when replacing.
2, 3-WAY VALVE
• Review material O-ring, valve core seal for securing suitability with oil.
CAUTION
Check if the valve is suitable for the refrigerant (model) when replacing.
06-08
R410A
WALL MOUNTED type
INVERTER
7 . TROUBLE SHOOTING
1. When the unit does not operate at all (Operation lamp and Timer lamp do not light up)
2. Self Diagnosis Function (Either Operation lamp or Timer lamp is blinking)
* How to operate the self-diagnosis function
* Self- diagnosis table and Check points
3. Trouble shooting method
* Serial signal check
* IPM protection check
* Refrigeration cycle diagnosis
Does not operate at all (Operation Lamp and Timer Lamp do not light up)
[Check Point]
(1)
(2)
(3)
(4)
Is the input power voltage from the exclusive circuit AC outlet normal?
Is the AC plug inserted to the AC outlet securely and not loose?
Does not connected cable do wrong wiring?
Check if each connector is inserted securely.
[Checking Flow Chart]
NO
Is AC input voltage between terminal 1-2 normal ?
Fault of an input power supply.
(The power supply is not supplied to an outdoor unit
terminal board.)
(The connection mistake of an outdoor unit terminal board.)
(Outdoor unit F202 open)
YES (AC208/230V)
NO
Is AC voltage between VA 1 normal?
Power supply input circuit
(The temperature fuse in a terminal
board is open or F1, VA1 defective)
YES (AC208/230V)
NO
Is DC voltage between terminal of C5 normal?
Switching power circuit
(D1, R1, L1 defective)
YES (AC208/230V)
Is DC voltage between terminals of C13 and C19 normal?
NO
Switching power circuit
(IC5, T1 or IC8,11 defective)
YES (C13:DC13.5V
(C19:DC 8.0V
Is DC voltage between terminals of C22 normal?
YES (DC5V
NO
IC6 defective
0.25V)
Is DC voltage between terminals of C17 normal?
YES (DC15V
1V)
3V)
NO
IC7 defective
1V)
Is DC voltage between terminal 1,2 of IC10 normal?
YES (DC5Vp-p, Pulse wave of 60Hz)
Controller PCB defective
07-01
NO
IC4 defective
SELF-DIAGNOSIS FUNCTION
This function memorizes the self-diagnosis function (lamp display) in the in door control P.C.Board
when trouble occurs.
(The memory contents are not destroyed even when the power cord is unplugged from the AC outlet.)
The self-diagnosis function (lamp display) can also be switched between major classification display
and minor classification display and precise diagnosis can be made.
Self-diagnosis function [lamp display] (memory reading)
(1) When error occurs, it is indicated by blinking [Operation lamp (Red)] and [Timer lamp (Green)].
(2) Upon pulling out and inserting the AC plug, the starts to operates from remote control.
(At this state, a normal operation indication is performed.)
(3) By pressing [TEST] button of remote control, [Error Indication] is indicated only
during
[3 minutes ST].
(3 minutes ST : 2 minutes 20 seconds from the timing AC plug is ON)
[Lamp display]
3 minutes delay
Turn off
Operating
Error Indication
Normal indication after
3min.ST
Indication
AC Plug ON
Start operation Input TEST signal
How to erase Memory
(1)
While [Error indication] is ON by the self-diagnosis function, the memorized contents can be
erased by pressing [Forced Auto Button] on the main unit.
(Indoor unit buzzer beeps 3 seconds.)
07-02
07-03
0.5 sec
2 times
0.5 sec
2 times
OFF
0.5 sec
3 times
0.5 sec
2 times
0.5 sec
5 times
0.5 sec
4 times
0.5 sec
3 times
Timer
(GREEN)
Operation
(RED)
Error Indication
04
02
13
13
01
01
Wired remote
controller
Indoor heat exchanger
thermistor error
Room temperature thermistor defective
Serial forward transfer error
during the operation
Serial forward transfer error
at starting up operation
Serial reverse transfer error
during the operation
Serial reverse transfer error
at starting up operation
Error
(Protection)
Self - diagnosis function and Checking points
>Permanent stop after 30
[Diagnosis Point]
Check thermistor resistance value (Refer to "Themistor characteristics table").
Controller PCB defective.
The detection value of the indoor heat exchanger thermistor is either open or shoted when the power is ON. > Remote control dose
not operate.
[Diagnosis Point]
Check thermistor resistance value (Refer to "Themistor characteristics table").
Controller PCB defective.
The room temperature thermistor detective a abnormai temperature when the power was turned on. > Remote control does not
operate.
[Diagnosis Point]
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)
When the outdoor unit does not receive the signal for 10 consecutive seconds during the operation > Outdoor unit stops.
[Diagnosis Point]
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)
The outdoor unit does not receive the signal for 10 consecutive seconds from the time when the power relay was ON.
>Outdoor unit stops.
[Diagnosis Point]
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)
When the indoor unit does not receive the signal for 10 consecutive seconds during the operation
seconds.
[Diagnosis Point]
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)
At the start up, the indoor unit does not receive the signal for 10 consecutive seconds from the time when the power relay was ON.
>Permanent stop after 30 seconds.
Diagnosis Method
07-04
0.5 sec
4 times
0.5 sec
2 times
0.5 sec
3 times
0.5 sec
4 times
0.5 sec
3 times
0.5 sec
2 times
0.5 sec
4 times
0.5 sec
3 times
Timer
(GREEN)
Operation
(RED)
Error Indication
No Display
No Display
No Display
0A
06
00
Wired remote
controller
Power supply frequency
detection error
Main relay error
Forced auto switch error
Outdoor temperature thermistor error
Outdoor heat exchanger
thermistor error
Discharge thermistor error
Error
(Protection)
Self - diagnosis function and Checking points
[Diagnosis Point]
Controller PCB defective.
The power supply frequency can not be recognized after 4 seconds of power ON.
> Permanent stop.
[Diagnosis Point]
Main relay defective
Controller PCB defective.
After 2 minutes 20 seconds of stopping operation, the signal from outdoor unit is received even though the main relay is OFF.
> Main relay OFF continues (outdoor unit OFF command)
[Diagnosis Point]
Check if forced auto switch is kept pressed.
Forced auto switch defective.
Controller PCB defective.
Forced auto switch becomes ON for 30 consecutive seconds.
> It indicates the error but the operation continues.
[Diagnosis Point]
Check thermistor resistance value (Refer to "Thermistor characteristics table").
Controller PCB defective.
The detection value of the outdoor temperature thermistor is either open or shorted.
> Compressor, outdoor fan : OFF (It automatically releases when the normal value is detected.)
[Diagnosis Point]
Check thermistor resistance value (Refer to "Thermistor characteristics table").
Controller PCB defective.
The detection value of the outdoor heat exchanger thermistor is either open or shorted.
> Compressor, outdoor fan : OFF (It automatically releases when the normal value is detected.)
[Diagnosis Point]
Check thermistor resistance value (Refer to "Thermistor characteristics table").
Controller PCB defective.
The detection value of the discharge thermistor is either open or shorted.
> Compressor, outdoor fan : OFF (It automatically releases when the normal value is detected.)
Diagnosis Method
07-05
0.5 sec
5 times
0.5 sec
7 times
0.5 sec
4 times
0.5 sec
6 times
0.5 sec
5 times
0.5 sec
3 times
0.5 sec
2 times
0.5 sec
8 times
Timer
(GREEN)
Operation
(RED)
Error Indication
1B
1A
18
17
21
No Display
Wired remote
controller
Outdoor fan error
(DC motor)
Compressor location error
CT error
IPM protection
Reverde-VDD permanence
stop protection
(Electric air clean power
supply circuit abnormal)
VDD permanence stop
protection
(Electric air clean)
Error
(Protection)
Self - diagnosis function and Checking points
[Diagnosis Point]
Fan motor connector loose/ defective contact.
Fan motor defective.
Controller PCB defective.
Either the outdoor fan motor abnormal current or location error was detected.
> Permanent stop.
[Diagnosis Point]
Check if 2-way valve or 3-way valve is left open.
Check the compressor (Winding resistance value, loose lead wire).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle diagnosis")
The compressor speed does not synchronze with the control signal. (Including start up failure of the compressor).
> permanent stop.
[Diagnosis Point]
Check if CT wire is open.
Controller PCB defective.
The current value during the operation after 1 minute from starting up the compressor is 0A.
> permanent stop.
[Diagnosis Point]
Heat radiation is blocked (inlet/outlet).
Check if outdoor fan is defetcive (does not rotate).
Controller PCB defective (Refer to after mentioned "IPM diagnosis").
Refrigeration cycle defective (Refer to after mentioned "refrigeration cycle diagnosis").
Abnormal current value of IPM is detected.
> Permanent stop.
[Diagnosis Point]
Electric air clean defective.
Controller PCB defective.
The air clean operation signal was detected for 1 minute at the time of air clean mode OFF.
> All stop. Not operate remote controller.
[Diagnosis Point]
The front panel is closed.
The foreign body such as dust doesn't adhere.
When the air cleanness monitor trial protection operates 4 times.
> Only clean air permanent stop.
Diagnosis Method
07-06
0.5 sec
8 times
0.5 sec
7 times
0.5 sec
2 times
0.5 sec
6 times
0.5 sec
4 times
0.5 sec
3 times
0.5 sec
2 times
0.5 sec
3 times
Timer
(GREEN)
Operation
(RED)
Error Indication
25
24
0F
No Display
No Display
Wired remote
controller
PFC circuit error
Excessive high pressure
protection on cooling
Discharge temperature
error
Indoor fan speed error
Indoor fan lock error
Error
(Protection)
Self - diagnosis function and Checking points
[Diagnosis Point]
Controller PCB defective (Refer to after mentioned "PFC circuit diagnosis")
Excessive voltage of DC voltage on PFC circuit in inverter PCB is detected, or the excessive current in the circuit is detected.
> Permanent stop.
[Diagnosis Point]
Heat radiation is blocked (Inlet /outlet).
Check if outdoor fan is defective (does not rotate).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle disagnosis").
Excessive high pressure protection on cooling mode has been activated.
> Compressor, outdoor fan : Off (It releases after 3 minute ST).
[Diagnosis Point]
Check if 2-way valve or 3-way valve is left open.
Heat radiation is blocked (Inlet /outlet).
Check if outdoor fan is defective (does not rotate).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle disagnosis").
The discharge temperature error is activated.
> Permanent stop.
[Diagnosis Point]
Fan motor connector loose /defective contact.
Fan motor defective
Controller PCB defective.
The indoor fan speed is 1/3 of the target frequency after 56 seconds from starting operation or from the time the fan mode was
changed. > Operation stop. (It releases by sending the operation stop signal from the remote controller).
[Diagnosis Point]
Fan motor connector loose /defective contact.
Fan motor defective
Controller PCB defective.
The indoor fan speed is 0 rpm after 56 seconds from starting operation or from the time the fan mode was changed.
> Operation stop. (It releases by sending the operation stop signal from the remote controller).
Diagnosis Method
Serial Signal Receiving Error
[Check Point] Check which has a cause of error, either Indoor unit or Outdoor unit.
* Remove indoor unit front panel and cable xlampers and keep the terminal block clear so that it can be
measured with a meter.
* Remove AC power and reset the power, and press Test Operation switch on remote control.
[Check Procedure]
CAUTION: Keep out hands from terminal base and electrical components. Voltage is
applied on them and you may get electric shock.
[Indoor Unit Check]
NO
Does indoor unit start to operate?
Conduct the inspection on "no operation at all".
YES
Does voltage AC208 to 230V appear between NO NO
terminal 1 and 2 of indoor unit terminal base?
YES
Measure voltage between terminal 2 and 3 of
indoor unit terminal base. Is it normal?
Check cable wiring of terminal base.
Check cable wiring of terminal base of indoor
and outdoor unit correctly connected as numbered.
NO
Indoor unit controller PCB IC10 failure.
YES
Indoor unit control unit is normal.
YES
Check outdoor unit control unit.
[Outdoor Unit Check]
Does voltage AC208 to 230V appear between
terminai 4 and 5 of outdoor unit terminal base?
NO
Check power supply connection.
YES
Does voltage AC208 to 230V appear at NO
DC voltage terminal?
NO
YES
Outdoor unit controller PCB board failure.
07-07
Check broken fuse, wiring connection.
IPM Protection
[Checking Points]
Check the following points and locae the cause in the outdoor unit.
[Cause]
㵘(1) Compressor failure
㵘(2) Refrigeration cycle failure
㵘(3) PC Board defective
㵘(4) IPM defective
㵘(5) Incorrect wiring
[First step]
Measure the DC voltage at terminals (between Electrolytic Capacitor and discharge resistance)
in the Inverter Controller Assy, and make sure it is lower than DC5V.
If it is higher than 5V, wait until the discharging is over.
Check point (1)
No(Abnormal)
Incorrect wiring > Correct and recheck
Parts touched > Correct and recheck
Parts broken > Change the broken part
Open the Inverter Controller Assy
and check if there is abnormal points.
Yes(Normal)
Go to Check point (2)
No(Not rotating)
Check point (2)
Turn on the power and press TEST button
on Remote Control.
Is the outdoor fan rotating?
IPM or PCB defective > Replace PCB
Yes(Rotating)
Go to Check point (3)
Check point (3)
No(Not operating)
Operate the unit for certain time and
check if the compressor is operating.
IPM or PCB defective > Replace PCB
Yes(Operating)
The unit is normal.
Recheck
Operate the unit for certain time and
check if the compressor is operating.
Yes(Operating) > Check completed
No(Not operating) > Return to the start
07-08
Trouble Shooting of Refrigerant Cycle
[Diagnosis Table for Defective Component]
: Item of most possible cause
IPM Protection
Compressor
Location error
Discharge
Temperature Error
Cooling High
Pressure
Protection
Refrigerant leak
Compressor failure(*)
EEV failure (*)
Thermistor failure (*)
(*) Trouble Shooting Method
(1) Checking method of the compressor failure
Insert the AC plug and start up the cooling operation. Input Test operation signal and check if the
compressor operates.
If it does not operate, measure the resistance value of compressor windings between U-V, V-W,
W-U.
If any of the resistance value between U-V, V-W, W-U is not same as others, the compressor is
defective.
Compressor Failure
NORMAL
ASU9/12RLQ
ASU18CL/RL
Compressor Case Temperature at 68°F(20°C): 0.710 ohm
Compressor Case Temperature at 68°F(20°C): 0.730 ohm
(The above resistance value is a typical value. There is some distribution. As it also changes by the
compressor temperature, the measured value may be much different from the above table when
measured right after stopping operation.)
(2) Checking method of EEV failure
- Insert the AC plug and start up the operation. Check if the EEV operates just before compressor is turned
on. (Touch EEV by hand and check it.)
If it does not operate, check if the coil or connector of EEV is removed or loose.
If it operates, check the discharge thermistor / outdoor heat exchanger thermistor / indoor heat
exchanger thermistor. (Refer to (3) for checking method.)
(3) Checking method of Thermistor
- Check each thermistor if it is removed or the connector is loose.
If there is no problem, remove the connector of the thermistor from the PCB and check the resistance
value (refer to the thermitor characteristics table).
07-09
R410A
WALL MOUNTED type
INVERTER
8 . APPENDING DATA
1. Jumper setting of Indoor unit and Outdoor unit
2. Outdoor unit Pressure Value and Total Electric Current Curve
3. Thermistor Resistance Values
4. Capacity/Input data
JP (Jumper) Setting
[Indoor Unit]
ASU9/12RLQ
ASU18CL/RL
- Remote control custom code
When multiple number of indoor units are installed in the same room, erroneous receipt of the signal can
be avoided by setting up the remote control custom code separately.
To set up the remote control custom code, always set up the same code on both indoor unit PCB and
remote control PCB.
(When the indoor unit PCB is changed to Code B, it can not receive the signal unless remote control PCB
is also changed to Code B.)
Indoor Unit
Remote Control
JM3(JP)
J4 (JP)
Code A (Default)
YES
YES
Code B
NO
NO
- Auto Restart
It is possible to disengage Auto Restart function if it is not needed.
Indoor Unit
JM2 (JP)
With Auto Restart function
YES
(Default)
Without
Auto
Restart
NO
function
[Outdoor Unit]
AOU9/12RLQ, AOU18CL/RL
Normal Preheat
Higher Preheat
JP
JM500
YES
NO
- it is possible to select the higher or standard level of preheating function.
- When it is set up at the higher level of preheat, the magnetic noise of the compressor becomes higher.
08-01
Outdoor Unit Low Pressure Value and Outdoor Total Electric Current Curve (Cooling)
Model Name : ASU9RLQ, ASU12RLQ
[Condition]
Ambient
Indoor / Outdoor - Same temperature
temperature
Refrigerant Standard amount
amount
Piping
length
7.5m (Height difference 1m)
Power
voltage
60Hz - 230V
Operation
condition
Measuring
method
TEST mode (Cooling), Hi Fan, Horizontal direction, Front air flow
Caution
Start operation with the condition of the Indoor Unit air filter clean.
Measure the low pressure with the pressure meter at the service valve. Measure the
outdoor unit overall current with the current clamp meter at Power Cable.
[Constant Frequency Operation Method (Test mode)]
1. Operate on Colling mode, and press TEST button of remote control.
2. Operate continuously for 30 minutes. (After 60 minutes of operation, Test mode is released automatica
(1) Indoor/Outdoor Temperature - Outdoor Low Pressure Curve
ASU9RLQ series
ASU12RLQ series
1.2
1.30
Relative Humidity 50%
Relative Humidity 60%
Relative Humidity 70%
Outdoor High Pressure (MPa)
Outdoor High Pressure (Mpa)
1.40
1.20
1.10
1.00
0.90
1.15
Relative Humidity 50%
1.1
Relative Humidity 60%
Relative Humidity 70%
1.05
1
0.95
0.9
0.85
0.8
0.75
0.7
0.80
63.5
(17.5)
68
(20)
72.5
(22.5)
77
(25)
81.5
(27.5)
86
(30)
90.5
(32.5)
63.5
(17.5)
In/Outdoor ambient temperature °F(°C)
68
(20)
72.5
(22.5)
77
(25)
81.5
(27.5)
86
(30)
90.5
(32.5)
In/Outdoor ambient temperature °F(°C)
(2) Indoor/Outdoor Temperature - Outdoor Total Electric Current Curve
ASU9RLQ series
ASU12RLQ series
4.2
Relative Humidity 50%
2.60
2.50
Outdoor Total Electric Current (A)
Outdoor Total Electric Current (A)
2.70
Relative Humidity 60%
Relative Humidity 70%
2.40
2.30
2.20
2.10
2.00
63.5
(17.5)
Relative Humidity 50%
4
Relative Humidity 60%
Relative Humidity 70%
3.8
3.6
3.4
3.2
3
68
(20)
72.5
(22.5)
77
(25)
81.5
(27.5)
86
(30)
90.5
(32.5)
63.5
(17.5)
In/Outdoor ambient temperature °F(°C)
68
(20)
72.5
(22.5)
77
(25)
81.5
(27.5)
86
(30)
In/Outdoor ambient temperature °F(°C)
08-02
90.5
(32.5)
Outdoor Unit High Pressure Value and Outdoor Total Electric Current Curve (Heating)
Model Name : ASU9RLQ, ASU12RLQ
[Condition]
Indoor 15 - 23degC, Outdoor 2 - 12degC
Ambient
temperature
Refrigerant Standard amount
amount
Piping
7.5m (Height difference 1m)
length
Power
60Hz - 230V
voltage
Operation TEST mode (Heating), Hi Fan, Lower direction, Front air flow
condition
Measuring
method
Measure the high pressure with the pressure meter at the service valve. Measure the
outdoor unit overall current with the current clamp meter at Power Cable.
Caution
Start operation with the condition of the Indoor Unit air filter clean.
[Constant Frequency Operation Method (Test mode)]
1. Operate on Heating mode, and press TEST button of remote control.
2. Operate continuously for 30 minutes. (After 60 minutes of operation, Test mode is released automat
(1) Indoor/Outdoor Temperature - Outdoor High Pressure Curve
ASU9RLQ series
ASU12RLQ series
2.90
3.30
Indoor inlet temp 59°F(15°C)
Indoor inlet temp 68°F(20°C)
Outdoor High Pressure (Mpa)
Outdoor High Pressure (Mpa)
Indoor inlet temp 59°F(15°C)
2.80
Indoor inlet temp 74°F(23°C)
2.70
2.60
2.50
2.40
2.30
2.20
2.10
Indoor inlet temp 68°F(20°C)
3.20
Indoor inlet temp 74°F(23°C)
3.10
3.00
2.90
2.80
2.70
2.60
2.50
2.40
32
(0)
35.6
(2)
39.2
(4)
42.8
(6)
46.4
(8)
50
(10)
53.6
(12)
57.2
(14)
32
(0)
Outdoor ambient temperature °F(°C)
35.6
(2)
39.2
(4)
42.6
(6)
46.4
(8)
50
(10)
53.6
(12)
57.2
(14)
Outdoor ambient temperature °F(°C)
(2) Indoor/Outdoor Temperature - Outdoor Total Electric Current Curve
ASU9RLQ series
ASU12RLQ series
6.40
Indoor inlet temp 59°F(15°C)
Outdoor Total Electric Current (A)
Outdoor Total Electric Current (A)
4.40
Indoor inlet temp 68°F(20°C)
4.30
Indoor inlet temp 74°F(23°C)
4.20
4.10
4.00
3.90
3.80
3.70
3.60
Indoor inlet temp 59°F(15°C)
Indoor inlet temp 68°F(20°C)
6.20
Indoor inlet temp 74°F(23°C)
6.00
5.80
5.60
5.40
5.20
5.00
3.50
32
(0)
35.6
(2)
39.2
(4)
42.8
(6)
46.4
(8)
50
(10)
53.6
(12)
57.2
(14)
32
(0)
35.6
(2)
39.2
(4)
42.6
(6)
46.4
(8)
50
(10)
53.6
(12)
Outdoor ambient temperature °F(°C)
Outdoor ambient temperature °F(°C)
08-03
57.2
(14)
Outdoor Unit Low Pressure Value and Outdoor Total Electric Current Curve (Cooling)
Model Name : ASU18CL, ASU18RL
[Condition]
Ambient
Indoor / Outdoor - Same temperature
temperature
Refrigerant Standard amount
amount
Piping
7.5m (Height difference 1m)
length
Power
60Hz - 230V
voltage
Operation TEST mode (Cooling), Hi Fan, Horizontal direction, Front air flow
condition
Measuring Measure the low pressure with the pressure meter at the service valve. Measure the
method
outdoor unit overall current with the current clamp meter at Power Cable.
Start operation with the condition of the Indoor Unit air filter clean.
Caution
[Constant Frequency Operation Method (Test mode)]
1. Operate on Colling mode, and press TEST button of remote control.
2. Operate continuously for 30 minutes. (After 60 minutes of operation, Test mode is released automatically.)
(1) Indoor/Outdoor Temperature - Outdoor Low Pressure Curve
ASU18CL/RL series
Outdoor Low Pressure (Mpa)
1.3
Relative Humidity 50%
Relative Humidity 60%
1.2
Relative Humidity 70%
1.1
1
0.9
0.8
0.7
59
(15)
68
(20)
77
(25)
86
(30)
95
(35)
In/Outdoor ambient temperature °F(°C)
Outdoor Total Electric Current (A)
(2) Indoor/Outdoor Temperature - Outdoor Total Electric Current Curve
ASU18CL/RL series
6
Relative Humidity 50%
Relative Humidity 60%
5.5
Relative Humidity 70%
5
4.5
4
59
(15)
68
(20)
77
(25)
86
(30)
95
(35)
In/Outdoor ambient temperature °F(°C)
08-04
Outdoor Unit High Pressure Value and Outdoor Total Electric Current Curve (Heating)
Model Name : AS18RL
[Condition]
Ambient
Indoor 15 - 23degC, Outdoor 2 - 12degC
temperature
Refrigerant Standard amount
amount
Piping
7.5m (Height difference 1m)
length
Power
60Hz - 230V
voltage
Operation TEST mode (Heating), Hi Fan, Lower direction, Front air flow
condition
Measuring Measure the high pressure with the pressure meter at the service valve. Measure the
method
outdoor unit overall current with the current clamp meter at Power Cable.
Caution
Start operation with the condition of the Indoor Unit air filter clean.
[Constant Frequency Operation Method (Test mode)]
1. Operate on Heating mode, and press TEST button of remote control.
2. Operate continuously for 30 minutes. (After 60 minutes of operation, Test mode is released automatically.)
(1) Indoor/Outdoor Temperature - Outdoor High Pressure Curve
ASU18RL
High-pressure of outdoor unit (Mpa)
4
3.8
3.6
3.4
Indoor inlet temp :59°F(15°C)
Indoor inlet temp :68°F(20°C)
Indoor inlet temp :73°F(23°C)
3.2
3
32
(0)
41
(5)
50
(10)
59
(15)
Outdoor ambient temperature °F(°C)
(2) Indoor/Outdoor Temperature - Outdoor Total Electric Current Curve
ASU18RL
Outdoor Total Electric Current (A)
9
8.5
Indoor inlet temp :59°F(15°C)
Indoor inlet temp :68°F(20°C)
Indoor inlet temp :73°F(23°C)
8
7.5
7
6.5
32
(0)
41
(5)
50
(10)
59
(15)
Outdoor ambient temperature °F(°C)
08-05
Thermistor resistance values
Room temperature thermistor
Indoor heat exchanger thermistor
Voltage (V)
Temp °F(°C)
Resistance k
Characteristics of room temperature thermistor
Voltage (V)
40.00
35.00
32.00
(0.00)
33.62
1.15
32.00
(0.00)
176.03
1.10
41.00
(5.00)
25.93
1.39
41.00
(5.00)
134.23
1.36
)
Resistance k
30.00
50.00 (10.00)
20.18
1.66
50.00 (10.00)
103.34
1.63
25.00
59.00 (15.00)
15.84
1.94
59.00 (15.00)
80.28
1.92
68.00 (20.00)
12.54
2.22
68.00 (20.00)
62.91
2.21
77.00 (25.00)
10.00
2.50
77.00 (25.00)
49.70
2.51
Resistance (k
Temp °F(°C)
86.00 (30.00)
8.04
2.77
86.00 (30.00)
39.57
2.79
95.00 (35.00)
6.51
3.03
95.00 (35.00)
31.74
3.06
104.00 (40.00)
5.30
3.27
104.00 (40.00)
25.64
3.30
113.00 (45.00)
4.35
3.48
113.00 (45.00)
20.85
3.53
122.00 (50.00)
3.59
3.68
122.00 (50.00)
17.06
3.73
131.00 (55.00)
2.98
3.85
131.00 (55.00)
14.10
3.90
140.00 (60.00)
2.47
4.00
140.00 (60.00)
11.64
4.55
149.00 (65.00)
2.09
4.14
149.00 (65.00)
9.69
4.19
158.00 (70.00)
1.76
4.25
158.00 (70.00)
8.12
4.30
167.00 (75.00)
1.49
4.35
167.00 (75.00)
6.83
4.40
176.00 (80.00)
1.27
4.44
176.00 (80.00)
5.78
4.48
185.00 (85.00)
1.09
4.51
185.00 (85.00)
4.91
4.55
194.00 (90.00)
0.93
4.57
194.00 (90.00)
4.19
4.61
203.00 (95.00)
0.81
4.63
203.00 (95.00)
3.59
4.66
212.00 (100.00)
0.70
4.67
212.00 (100.00)
3.09
4.71
Discharge thermistor
Resistance k
20.00
15.00
10.00
5.00
0.00
32
(0)
50
(10)
68
(20)
86
(30)
104
(40)
Characteristics of heat exchanger thermistor (Indoor)
Resistance (k
)
180.00
160.00
140.00
120.00
100.00
80.00
60.00
40.00
20.00
0.00
32
(0)
68
(20)
104
(40)
140
(60)
Outdoor temperature thermistor
Resistance k
Voltage (V)
(0.00)
175.70
0.18
-4.00 (-20.00)
49.20
2.66
-4.00 (-20.00)
115.24
1.25
41.00
(5.00)
134.93
0.24
5.00 (-15.00)
36.58
3.02
5.00 (-15.00)
84.21
1.56
50.00 (10.00)
104.59
0.30
14.00 (-10.00)
27.51
3.35
14.00 (-10.00)
62.28
1.90
59.00 (15.00)
81.79
0.31
23.00
(-5.00)
20.91
3.64
23.00
(-5.00)
46.58
2.26
68.00 (20.00)
64.50
0.38
32.00
(0.00)
16.05
3.89
32.00
(0.00)
35.21
2.61
77.00 (25.00)
51.27
0.47
41.00
(5.00)
12.44
4.09
41.00
(5.00)
26.88
2.94
86.00 (30.00)
41.07
0.70
50.00 (10.00)
9.73
4.26
50.00 (10.00)
20.72
3.25
95.00 (35.00)
33.13
0.84
59.00 (15.00)
7.67
4.40
59.00 (15.00)
16.12
3.52
104.00 (40.00)
26.91
0.99
68.00 (20.00)
6.10
4.51
68.00 (20.00)
12.64
3.76
113.00 (45.00)
22.01
1.16
77.00 (25.00)
4.89
4.60
77.00 (25.00)
10.00
3.97
122.00 (50.00)
18.10
1.34
86.00 (30.00)
3.95
4.67
86.00 (30.00)
7.97
4.14
131.00 (55.00)
14.98
1.54
95.00 (35.00)
3.21
4.73
95.00 (35.00)
6.40
4.28
140.00 (60.00)
12.47
1.74
104.00 (40.00)
2.62
4.78
104.00 (40.00)
5.18
4.41
149.00 (65.00)
10.44
1.95
113.00 (45.00)
2.16
4.81
113.00 (45.00)
4.21
4.51
158.00 (70.00)
8.78
2.16
122.00 (50.00)
1.79
4.85
122.00 (50.00)
3.45
4.59
167.00 (75.00)
7.42
2.36
131.00 (55.00)
1.49
4.87
131.00 (55.00)
2.85
4.65
176.00 (80.00)
6.31
2.57
140.00 (60.00)
1.25
4.89
140.00 (60.00)
2.36
4.71
185.00 (85.00)
5.38
2.76
149.00 (65.00)
1.05
4.91
149.00 (65.00)
1.97
4.76
194.00 (90.00)
4.61
2.95
158.00 (70.00)
0.89
4.92
158.00 (70.00)
1.65
4.79
203.00 (95.00)
3.97
3.13
167.00 (75.00)
0.76
4.93
167.00 (75.00)
1.39
4.83
212.00 (100.00)
3.43
3.30
176.00 (80.00)
0.65
4.94
176.00 (80.00)
1.18
4.85
221.00 (105.00)
2.98
3.45
185.00 (85.00)
0.56
4.95
185.00 (85.00)
1.00
4.87
230.00 (110.00)
2.59
3.60
194.00 (90.00)
0.48
4.96
194.00 (90.00)
0.85
4.89
239.00 (115.00)
2.26
3.73
203.00 (95.00)
0.41
4.96
203.00 (95.00)
0.73
4.91
248.00 (120.00)
1.99
3.85
212.00 (100.00)
0.36
4.97
212.00 (100.00)
0.63
4.92
Temp °F(°C)
120.00
40.00
100.00
Resistance (k
100.00
80.00
60.00
40.00
20.00
0.00
32
(0)
68
(20)
104
(40)
140
(60)
176
(80)
212
(100)
Temperature °F(°C)
248
(120)
)
Resistance (k
)
)
Resistance (k
120.00
30.00
20.00
10.00
0.00
-4
(-20)
Voltage (V)
Characteristics of outdoor temperature thermistor
50.00
160.00
140.00
Resistance k
Temp °F(°C)
Characteristics of heat exchanger thermistor (Outdoor)
Characteristics of discharge thermistor
180.00
176
(80)
Temperature °F(°C)
Outdoor heat exchanger thermistor
Voltage (V)
140
(60)
Temperature °F(°C)
32.00
Temp °F(°C)
122
(50)
32
(0)
68
(20)
104
(40)
140
(60)
Temperature °F(°C)
08-06
176
(80)
80.00
60.00
40.00
20.00
0.00
-4
(-20)
32
(0)
68
(20)
104
(40)
Temperature °F(°C)
140
(60)
ASU9RLQ Capacity/Input data
Heating
<Capacity>
180%
IndoorDB:70 F
170%
160%
Capacity(%)
150%
Maximum
operation
Without Frost
140%
130%
120%
With Frost
110%
Rated
operation
100%
90%
Without Frost
80%
70%
60%
50%
40%
5
23
14
32
Outdoor DB( F)
41
50
59
77
68
42
75
Input(%)
<Input>
220%
210%
200%
190%
180%
170%
160%
150%
140%
130%
120%
110%
100%
90%
80%
70%
IndoorDB:70 F
Without Frost
Maximum
operation
Rated
operation
With Frost
Without Frost
5
14
23
32
41
42
50
59
68
Outdoor DB( F)
* Defrosting operation is performed when temperature is less than 42 degrees F.
Frost appears on an outdoor unit heat exchanger at 42 or less degrees F.
* Solid line:Integral capacity/Input containing the defrosting cycle.
* Dotted line:Capacity/Input which does not contain the defrosting cycle.
08-07
77
75
Cooling
<Capacity>
150%
Indoor:80/65
140%
Capacity(%)
130%
120%
110%
100%
90%
80%
70%
60%
14
32
50
68
86
68
86
104
115
Outdoor DB( F)
<Input>
130%
Indoor:80/65
120%
110%
Input(%)
100%
90%
80%
70%
60%
50%
40%
30%
14
32
50
104
115
Outdoor DB( F)
* Both capacity and input change largely when temperature is 50 or less degrees F, as outdoor fan speed
is decreased due to low ambient temperature cooling control.
* Both capacity and input change more largely at less than 32 degrees F of ambient temperature as
outdoor fan speed is decreased further.
08-08
ASU12RLQ Capacity/Input data
Heating
<Capacity>
150%
140%
IndoorDB:70 F
Maximum
operation
Capacity(%)
130%
Without Frost
120%
110%
With Frost
100%
90%
Rated
operation
80%
70%
60%
Without Frost
50%
40%
5
14
23
32
41
50
59
42
Outdoor DB( F)
77
68
75
<Input>
180%
IndoorDB:70 F
170%
160%
Without Frost
Input(%)
150%
Maximum
operation
140%
130%
120%
With Frost
110%
100%
Without Frost
Rated
operation
90%
80%
70%
5
14
23
Outdoor DB( F)
32
41
42
50
59
77
68
75
* Defrosting operation is performed when temperature is less than 42 degrees F.
Frost appears on an outdoor unit heat exchanger at 42 or less degrees F.
* Solid line:Integral capacity/Input containing the defrosting cycle.
* Dotted line:Capacity/Input which does not contain the defrosting cycle.
08-09
Cooling
<Capacity>
150%
Indoor:80/65
140%
Capacity(%)
130%
120%
110%
100%
90%
80%
70%
60%
14
32
50
68
Outdoor DB( F)
86
104
115
66
<Input>
120%
110% Indoor:80/65
100%
Input(%)
90%
80%
70%
60%
50%
40%
30%
14
32
50
68
Outdoor DB( F)
86
104
115
66
* Both capacity and input decrease when temperature is 66 or less degrees F, for compressor
frequency restrictions operate.
* Both capacity and input decrease when temperature is 104 or more degrees F, as compressor speed is
decreased due to current release protection.
* Both capacity and input change largely when temperature is 50 or less degrees F, as outdoor fan speed
is decreased due to low ambient temperature cooling control.
* Both capacity and input change more largely at less than 32 degrees F of ambient temperature as
outdoor fan speed is decreased further.
08-10
ASU18RL Capacity/Input data
Heating
<Capacity>
Maximum operation
Current release works
140%
IndoorDB:70 F
130%
120%
Without Frost
Capacity(%)
110%
100%
Current release works
With Frost
90%
Rated
operation
80%
70%
60%
50%
Without Frost
40%
30%
5
14
32
23
Outdoor DB( F)
41
50
59
42
77
68
63
54
75
<Input>
180%
IndoorDB:70 F
170%
160%
Without Frost
Maximum operation
Current release works
150%
Input(%)
140%
With Frost
130%
120%
110%
100%
90%
Rated
operation
80%
70%
Current release works
Without Frost
60%
5
14
23
32
Outdoor DB( F)
41
42
50
59
54
* Defrosting operation is performed when temperature is less than 42 degrees F.
Frost appears on an outdoor unit heat exchanger at 42 or less degrees F.
* Solid line:Integral capacity/Input containing the defrosting cycle.
* Dotted line:Capacity/Input which does not contain the defrosting cycle.
08-11
68
63
77
75
Cooling
<Capacity>
150%
Indoor:80/65
140%
130%
Capacity(%)
120%
110%
100%
90%
80%
70%
60%
32
14
50
Outdoor DB( F)
68
86
104
115
86
104
115
66
<Input>
120%
110%
Indoor:80/65
100%
Input(%)
90%
80%
70%
60%
50%
40%
30%
20%
14
32
Outdoor DB( F)
50
68
66
* Both capacity and input decrease when temperature is 66 or less degrees F, for compressor
frequency restrictions operate.
* Both capacity and input decrease when temperature is 104 or more degrees F, as compressor speed is
decreased due to current release protection.
* Both capacity and input change largely when temperature is 50 or less degrees F, as outdoor fan speed
is decreased due to low ambient temperature cooling control.
* Both capacity and input change more largely at less than 32 degrees F of ambient temperature as
outdoor fan speed is decreased further.
08-12
R410A
WALL MOUNTED type
INVERTER
9 . REPLACEMENT PARTS
R EPL ACEMENT PART S
Models : ASU9RLQ
ASU12RLQ
09-01
R EPL ACEMENT PART S
Models : ASU9RLQ
ASU12RLQ
09-02
R EPL ACEMENT PART S
Models : AOU9RLQ
AOU12RLQ
09-03
R EPL ACEMENT PART S
Models : ASU18CL
ASU18RL
09-04
R EPL ACEMENT PART S
Models : ASU18CL
ASU18RL
09-05
R EPL ACEMENT PART S
Models : ASU18CL
ASU18RL
09-06
R EPL ACEMENT PART S
PROCESS
ATTACHMENT OF INVERTER ASSY
1 INVERTER ASSY
2 Tap tight screw
1
2
A
(SEPARATER)
A
(TERMINAL BRACKET)
Do not run up the terminal board mounting metal
on 2 location of hook.
THERMISTOR (OUT TEMP) is passed here.
09-07
R EPL ACEMENT PART S
PROCESS The leads are connected with INVERTER ASSY
1 MOTOR LEAD
2 THERMISTOR ASSY (COND, DIS)
3 THERMISTOR (OUT TEMP)
4 SOLENOID LEAD
5 COIL (EXP VLV) LEAD
6
6 COMP LEAD
7 WIRE CLAMPER
B
8 REACTOR LEAD
A
Cross 4 and 8
4
Run the wire in front of bytly rubber sheet.
8
3
2
A
5
4
1
6
4 is fixed to HOLDER
09-08
R EPL ACEMENT PART S
PROCESS The leads are connected with INVERTER ASSY
B
(TERMINAL COVER)
6
7
D
E
D
E
(BINDER)
0~10mm
COMP LEAD is passed TERMINAL COVER the under.
PCB side
09-09
7
COMP side
R EPL ACEMENT PART S
PROCESS Fixing of Thermistor lead and motor lead.
1 THERMISTOR ASSY (SUC/DIS)
2 THERMISTOR (OUT TEMP)
3 MOTOR LEAD
0~5mm
4 COIL(EXP VLV)
B
B-B
3
B
A
4
A
1
1
10 10mm
2
E-E
3
120~140mm
200~230mm
4
160~190mm
3
1
1
190~220mm
4
2
2
1
09-10
R410A
WALL MOUNTED type
INVERTER
10 . INSTALLATION MANUAL
This symbol refers to a hazard or unsafe practice which
can result in personal injury and the potential for product
or property damage.
CAUTION:
Large pipe
Outer diameter
Thickness
1/2”(12.7 mm)
1/32”(0.8 mm)
1
2
2
2
8
1
1
1
1
1 set
Vinyl tape
Wall cap
Saddle
ADDITIONAL CHARGE
Refrigerant suitable for a piping length of 49 ft (15 m) is charged in
the outdoor unit at the factory.
When the piping is longer than 49 ft (15 m), additional charging is necessary.
For the additional amount, see the table below.
49 ft (15 m)
None
Additional
refrigerant
66 ft (20 m)
3.5 oz (100 g)
CAUTION
(1) When adding refrigerant, add the refrigerant from
the charging port at the completion of work.
(2) The maximum length of the piping is 66 ft (20 m).
If the units are further apart than this, correct
operation can not be guaranteed.
Between 49 ft (15 m) and 66 ft (20 m), when using a connection pipe
other than that in the table, charge additional refrigerant with 0.2 oz/
ft (20g/1 m) as the criteria.
Pipe length
Table 5
88 °F or less
1
1 set
16 A
20 A
MINIMUM CIRCUIT AMPACITY
MAXIMUM OVERCURRENT PROTECTION
(TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)
CAUTION
Always make the air conditioner power supply a special branch circuit and provide a special switch and receptacle. Do not extend the
power cord.
ELECTRICAL REQUIREMENT
Sealant
Tapping screws
1
1
Indoor humidity
Drain hose
1
Q’ty
Decorative tape
Name
Wall pipe
About 64 to 90 °F
About 80% or less
Indoor temperature
Outdoor temperature About 14 to 115 °F About 5 to 75 °F
Connection cord (3-conductor)
Heating Mode
Seal A
Air cleaning filter frame
Air cleaning filter
Tapping screw (small)
Tapping screw (big)
1
Cooling/Dry Mode
1
1
2
1
Name and Shape
Cloth tape
The following items are necessary to install this air conditioner. (The
items are not included with the air conditioner and must be purchased
separately.)
Drain pipe
Remote control
unit holder
Battery (penlight)
Remote
control unit
1
Q’ty
Connection pipe assembly
Table 4
3. OPERATING RANGE
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire
(See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
2. ADDITIONAL MATERIALS REQUIRED FOR INSTALLATION
CAUTION
Check local electrical codes and regulations
before obtaining wire. Also, check any specified
instructions or limitations.
Cut each pipe to the appropriate length +12” (30 cm)
to16” (40 cm) to dampen vibration between units.
B. Foamed polyethylene insulation for copper pipes as
required to precise length of piping. Wall thickness
of the insulation should not be less than 5/16” (8 mm).
C. Use insulated copper wire for field wiring.
Small pipe
Outer diameter
Thickness
1/4”(6.35 mm)
1/32”(0.8 mm)
Table 3
A. Deoxidized annealed copper pipe for refrigerant piping as:
Copper tubing for connectin the outdoor unit to the indoor
unit and insulation material is available for purchase locally.
When you purchase them, please specify the following.
1. TYPE OF COPPER PIPE AND INSULATION MATERIAL
Name and Shape
Wall hook bracket
Q’ty
The following installation accessories are supplied. Use them as
required.
INDOOR UNIT ACCESSORIES
STANDARD ACCESSORIES
GENERAL
• Turn the power OFF at the main circuit breaker panel before opening
the unit to check or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal
scraps or bits of wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the
operating manual.
When Servicing
Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your
particular model is specified as either “small” or “large” rather than as
“liquid” or “gas”.
NOTE:
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and
union tubes before connecting them, then tighten the nut with a torque
wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
When Connecting Refrigerant Tubing
Install the outdoor unit on a raised platform that is higher than drifting
snow. Provide snow vents.
...In a Snowy Area (for Heat Pump-type Systems)
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In an Area with High Winds
Use a raised concrete pad or concrete blocks to provide a solid, level
foundation for the outdoor unit. This prevents water damage and abnormal vibration.
...In Moist or Uneven Locations
Properly insulate any tubing run inside a room to prevent “sweating”
that can cause dripping and water damage to walls and floors.
...In a Room
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It
may be necessary to construct a strong wood or metal frame to provide
added support.
...In a Ceiling or Wall
When Installing...
Be careful when picking up and moving the indoor and outdoor units.
Get a partner to help, and bend your knees when lifting to reduce strain
on your back. Sharp edges or thin aluminum fins on the air conditioner
can cut your fingers.
When Transporting
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
ENGLISH
This INSTALLATION MANUAL briefly outlines where
and how to install the air conditioning system. Please
read over the entire set of instructions for the indoor
and outdoor units and make sure all accessory parts
listed are with the system before beginning.
• Do not supply power to the unit until all wiring and tubing are completed
or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully
refer to the wiring diagram and these instructions when wiring. Improper
connections and inadequate grounding can cause accidental injury
or death.
• Ground the unit following local electrical codes.
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL
INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
When Wiring
SPECIAL PRECAUTIONS
The manufacturer shall in no way be responsible for improper installation
or maintenance service, including failure to follow the instructions in this
document.
In Case of Improper Installation
These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our
sales/service outlet or your certified dealer for additional instructions.
If Necessary, Get Help
Safety / alert
Electrical
• Hazel alerting symbols
This symbol refers to a hazard or unsafe practice which
can result in severe personal injury or death.
WARNING:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in
this manual.
For safe installation and trouble-free operation, you must:
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to
install or service the system so it operates safely and efficiently.
IMPORTANT!
Please Read Before Starting
(MODEL: ASU18RL/AOU18RL; ASU18CL/AOU18CL)
(P/N 9315140050-01)
INSTALLATION MANUAL
5 cm or over
This air conditioner uses new refrigerant HFC (R410A).
Contents of change
Special gas leakage detector for HFC refrigerant R410A.
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Vacuum pump
Fig. 8
2 Right outlet
Fig. 6
21-1/4” (54 cm)
3 Bottom outlet
1 Rear outlet
(Rear)
4 Left rear
outlet
5 Left
outlet
The piping can be connected in the five directions indicated by 1, 2, 3,
4, and 5 in (Fig. 6). When the piping is connected in direction 2 or 5, cut
along the piping groove in the side of the front cover with a hacksaw.
When connecting the piping in direction 3, cut a notch in the thin wall at
the front bottom of the front cover.
[Indoor unit piping direction]
(1) Do not install where there is the danger of combustible gas leakage.
(2) Do not install near heat sources.
(3) If children under 10 years old may approach the
unit, take preventive measures so that they cannot reach the unit.
CAUTION
Install at a place that can withstand the weight of the
indoor and outdoor units and install positively so that
the units will not topple or fall.
WARNING
(1) If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install a blind that does not interfere
with the air flow.)
(2) Do not install the unit where a strong wind blows or where it is
very dusty.
(3) Do not install the unit where people pass.
(4) Take your neighbors into consideration so that they are not disturbed by air blowing into their windows or by noise.
(5) Provide the space shown in Fig. 7 so that the air flow is not blocked.
Also for efficient operation, leave open three of the four directions front, rear, and both sides.
2. OUTDOOR UNIT
(1) Install the indoor unit level on a strong wall which is not subject
to vibration.
(2) The inlet and outlet ports should not be obstructed : the air should
be able to blow all over the room.
(3) Install the unit near an electric outlet or special branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces shown
in (Fig. 7). Also install the unit where the filter can be removed.
1. INDOOR UNIT
Decide the mounting position with the customer as follows:
SELECTING THE MOUNTING
POSITION
In places where the outdoor temperature drops
to 32°F or lower, the drain water may freeze and
may stop up the drain or cause other outdoor
unit trouble. Therefore take measures so that
the drain water will not freeze and clog the
drain.
NOTE:
4”(10 cm)
or over
Tapping
screw
(small)
Remote
control
unit holder
(Wall cap)
Outdoor unit bottom
2”(5 cm)
or over
Drain hose
[Reverse cycle only]
Mounting Support
(Prepared On-site)
12”(30 cm)
or over
4”(10 cm)
or over
24”(60 cm)
or over
[OUTDOOR UNIT]
14AWG
Connection Cord
Remote
control unit
95” (240 cm)
or over
60”(150 cm) or over
12”(30 cm)
or over
3- 3/5”(9 cm)
or over
Remove the two mounting screws.
10. Fully open the valve stems of the 2-way valve and 3-way valve
using a hexagon wrench. (After the valve stem begins to turn,
turn it with a torque of less than 2.17ft •lbs (30 kgf•cm) until it
stops turning.)
9. Slowly loosen the valve stem of the 3-way valve. When the
compound pressure gauge reading reaches 0.1-0.2 MPa,
retighten the valve stem and disconnect the charge hose
from the 3-way valve charging port.
(If the stem of the 3-way valve is opened fully before the
charge hose is disconnected, it may be difficult to disconnect
the charge hose.)
8. At the end of pump down, close the low pressure side gauge of
the gauge manifold fully and stop the vacuum pump.
7. Pump down the system for at least 15 minutes, then check if the
compound pressure gauge reads -0.1 MPa (-76 cmHg, -1 bar).
6. Slowly loosen the flare nut of the 3-way valve and check if air
enters, then retighten the flare nut.
(When the flare nut is loosened the operating sound of the
vacuum pump changes and the reading of the compound
pressure gauge goes from minus to zero.)
5. Operate the vacuum pump and start pump down.
4. Open the low pressure side valve of the gauge manifold fully.
3. Connect the gauge manifold charge hose to the charging port
of the 3-way valve (side with the projection for pushing in the
valve core).
2. Check that the stems of 2-way valve and 3-way valve are closed
fully.
1. Check if the piping connections are secure.
Close the high pressure side valve of the gauge manifold fully and do
not operate it during the following work.
Always use a vacuum pump to purge the air.
Refrigerant for purging the air is not charged in the
outdoor unit at the factory.
AIR PURGE
(2) When installing the outdoor unit where it may exposed to strong wind, fasten it securely.
(1) Install the unit where it will not be tilted by more
than 5°.
WARNING
(1) After inserting the three front hooks, then insert the rear hook.
(2) Tighten the two mounting screws.
Installing the connector cover
●
(Outside)
Hook
Center notch
CAUTION
Tapping screw
String
Wall hook
bracket
Counter weight
Wall
3/8’’(10 mm)
or over
Lower
3-2/16’’(80 mm) dia. hole
3/16’’ to 3/8’’ (A 2-9/16’’(65mm)
(5 to 10 mm) diameter hole is
possible for the rightlow
hand side.)
Center mark
Right piping
Fig. 3
Indoor unit
drain hose
Drain cap
Remove the drain cap by pulling
at the projection at the end of
the cap with pliers, etc.
For left outlet piping, cut off the
piping outlet cutting groove
with a hacksaw.
Bottom Indoor unit drain hose
piping (bottom)
Pipe (top)
Rear piping
Bind with vinyl tape
Drain fixture
(blue)
Drain hose
Drain cock
Connector cover
Rear hooks
Front hooks
Tapping screw
Charge
hose
20.25 to 23.15 ft•lbs (280 to 320 kgf•cm)
9.04 to 11.57 ft•lbs (125 to 160 kgf•cm)
Blank cap (3-way valve)
Charging port cap
(2) After connecting the piping , check the joints for
gas leakage with gas leak detector.
(1) Refrigerant must not be discharged into atmosphere.
CAUTION
14.47 to 18.08 ft•lbs (200 to 250 kgf•cm)
Tightening torque
Vacuum pump
HI
Blank cap (2-way valve)
Table 6
Blank cap
Charge hose
Valve stem
Charging port
LO
Gauge manifold
Compound pressure gauge
Pressure gauge
-0.1 MPa
(-76 cmHg
-1 bar)
Flare nut
High
pressure
Low pressure
side valve
side valve
(closed)
2-way valve
Charging port cap
3-way valve
Fig. 10
11. Firmly tighten the 2-way valve and 3-way valve blank cap and
the charging port cap.
Fig. 9
● Be sure to install around the drain hose connector.
● As the screw is inside, be sure to use screwdriver treated with magnet.
Screw hole
Screw
toward the inside, so that the
drain fixture (blue) can accurately align with the screw hole
around the drain cock.
After inserting and before replacing, please reinstall and fix
the removed screws.
Drain fixture (blue)
● Vertically insert the drain hose
Drain hose
drain hose and pull out drain
hose.
Screw
● Remove the screw at the left of
Removal method of drain Installation method of
hose
drain hose
Set the unit on a strong stand, such as one made of concrete blocks
to minimize shock and vibration.
Do not set the unit directly on the ground because it will cause trouble.
Connector cover removal
●
OUTDOOR UNIT INSTALLATION
OUTDOOR UNIT
(5) Prevent drain water frozen under low temperature environment.
When installing indoor unit's drain hose outdoors,
necessary measure for frost protection should be
taken to prevent drain water frozen.
● Under low temperature environment (when outdoor temperature under 32 °F), after cooling operation is executed, water in the drain hose could
be frozen.
Once drain water is frozen, the drain hose will
be blocked and water leakage may be resulted
for indoor unit.
(1) In order to align the drain hose and drain cap, be
sure to insert securely and vertically. Incline insertion will cause water leakage.
(2) When inserting, be sure not to attach any material besides water. If any other material is attached,
it will cause deterioration and water leakage.
(3) After removing drain hose, be sure not to forget
mounting drain cap.
(4) Be sure to fix the drain hose with tape to the bottom of piping.
CAUTION
Interchange the drain cap and the drain hose.
●
2”(5 cm)
or over
Install the indoor unit piping in the direction of the wall hole and
bind the drain hose and pipe together with vinyl tape. (Fig. 3)
Install the piping so that the drain hose is at the bottom.
Wrap the pipes of the indoor unit that are visible from the outside
with decorative tape.
[For Left rear piping, Left piping]
●
●
●
Wall hook bracket
(Inside)
(Wall pipe)
3/8’’(10 mm)
or over
Lower
3-2/16’’(80 mm)
dia. hole
Install the wall hook bracket horizontally and perpendicularly.
Fig. 2
3. FORMING THE DRAIN HOSE AND PIPE
If the wall pipe is not used, the cord interconnecting
the indoor and outdoor units may touch metal and
cause electric leakage.
WARNING
through the holes near the outer edge of the bracket.
● Check that there is no rattle at the wall hook bracket.
● Fasten the wall hook bracket to the wall with 6 or more screws
[Rear piping, Right piping, Bottom piping]
Fig. 7
2-2/5”(6 cm) or over
(Wall cap)
Fasten with
vinyl tape
Fig. 1
2. INSTALLING THE WALL HOOK BRACKET
(1) Install the wall hook bracket so that it is correctly positioned horizontally and vertically. If the wall hook bracket is titled, water will
drip to the floor.
(2) Install the wall hook bracket so that it is strong enough to withstand the weight of an adult.
[INDOOR UNIT]
Wall hook bracket
INSTALLATION DIAGRAM OF
INDOOR AND OUTDOOR UNITS
When installing pipes shorter than 3m, sound of the outdoor unit will be transferred to the indoor unit, which will
cause large operating sound or some abnormal sound.
CAUTION
(2) When installing and relocating the air conditioner, do not mix gases other than the specified refrigerant(R410A)
to enter the refrigerant cycle.
• If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally high value
and cause breakage, injury, etc.
(1) Do not use the existing (for R22) piping and flare nuts.
• If the existing materials are used, the pressure inside the refrigerant cycle will rise and cause breakage, injury,
etc.(Use the special R410A materials.)
WARNING
Copper pipes
It is necessary to use seamless copper pipes and it is desirable
Table 1 Thicknesses of Annealed Copper Pipes
that the amount of residual oil is less than 40 mg/10m. Do not
Thickness (mm)
use copper pipes having a collapsed, deformed or discolored
Nominal
Outer diameter
R410A
[ref.] R22
portion (especially on the interior surface). Otherwise, the exdiameter
(mm)
pansion value or capillary tube may become blocked with con1/4
6.35
0.80
0.80
taminants.
1/2
12.7
0.80
0.80
As an air conditioner using R410A incurs pressure higher than
when using R22, it is necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in Table1.Never use copper pipes thinner than 0.8mm even
when it is available on the market.
Gas leakage detector
To increase pressure resistance, the hose material and base size were changed.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
It is recommended the gauge with seals-0.1 to 5.3 MPa (-1 to 53 bar) for high pressure.
Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous
mixing of other refrigerants, the diameter of each port has been changed.
Charge hose
Gauge manifold
Tool name
Special tools for R410A
(4) When charging the refrigerant, take into account the slight change in the composition of the gas
and liquid phases, and always charge from the liquid phase side whose composition is stable.
(3) Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant(R22) models. Also, when storing the piping ,securely seal the opening by pinching,
taping, etc.
(2) Models that use refrigerant R410A have a different charging port thread diameter to prevent
erroneous charging with conventional refrigerant(R22) and for safety. Therefore, check
beforehand.[The charging port thread diameter for R410A is 1/2 threads per inch.]
(1) Cut a 3-2/16’’(80 mm) diameter hole in the wall at the position shown
in (Fig.1).
(2) When cutting the wall hole at the inside of the wall hook bracket,
cut the hole within the range of the left and right center marks
3/8’’(10 mm) below the installation frame.
When cutting the wall hole at the outside of the wall hook bracket,
cut the hole at least 3/8’’(10 mm) below less.
(3) Cut the hole so that the outside end is lower 3/16’’ to 3/8’’ (5 to 10 mm)
than the inside end.
(4) Always align the center of the wall hole. If misaligned, water leakage will occur.
(5) Cut the wall pipe to match the wall thickness, stick it into the wall
cap, fasten the cap with vinyl tape, and stick the pipe through the
hole. (The connection pipe is supplied in the installation set.)
(Fig.1)
(6) For left piping and right piping, cut the hole a little lower so that
drain water will flow freely. (Fig.1)
INDOOR UNIT
1. CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING
For left piping and left rear piping, align the marks on the wall
hook bracket and shape the connection pipe.
Bend the connection piping at a bend radius of 2 - 3/4’’(70 mm) or
more and install no more than 1- 3/8’’(35 mm) from the wall.
After passing the indoor piping and drain hose through the wall
hole, hang the indoor unit on the hooks at the top and bottom of
the wall hook bracket.
Wall hook bracket
Indoor unit
(Spacer)
Hang the indoor unit from the hooks at the top of the wall hook
bracket.
Insert the spacer, etc. between the indoor unit and the wall hook
bracket and separate the bottom of the indoor unit from the wall.
Extend the pipe
by unwinding it.
NO
(Fitting)
Connection pipe
(1/2’’(12.7 mm) dia.)
WARNING
Earth screw
1
2
3
G
Terminal
Indoor unit
Fig. 11
G
1
2
3
Indoor unit
terminal block
DISCONNECT
SWITCH
(FIELD SUPPLY)
4
G
Terminal
Outdoor unit
208/230V
(Inter Unit)
Power line
Disconnect switch
208/230V
208/230V
Control line
Grounding line
Connect wires to the matching numbers of
terminals.
Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard
may also exist. Therefore, be sure all wiring is
tightly connected.
No wire should be allowed to touch refrigerant
tubing, the compressor or any moving part.
Every wire must be connected firmly.
Bottom hooks
Top hooks
Wall hook
bracket
Connection pipe
(1/4” (6.35 mm) dia.)
CAUTION
11.57 to 13.02 ft•lbs
(160 to 180 kgf•cm)
36.17 to 39.78 ft•lbs
(500 to 550 kgf•cm)
(2) During installation, make sure that the refrigerant pipe is attached firmly
before you run the compressor. Do not operate the compressor under the
condition of refrigerant piping not attached properly with 2-way or 3-way
valve open. This may cause abnormal pressure in the refrigeration cycle
that leads to breakage and even injury.
(1) Fasten a flare nut with a torque wrench as instructed in this manual. If
fastened too tight, the flare nut may be broken after a long period of time
and cause a leakage of refrigerant.
1/2” (12.7 mm)dia.
To prevent gas leakage,
coat the flare surface
with refrigerator oil.
Tightening torque
Flare nut tightening torque
Flare nut
1/4” (6.35 mm)dia.
Table 2
Connection pipe
Flare nut
Wrench (fixed)
Tighten with two wrenches.
Indoor unit pipe
Torque wrench
Fig. 5
1
2
4
5
G
Earth screw
Power supply line
3
Outdoor unit
terminal block
Lock nut
Conduit
connector
Power supply
Inter-unit
wire harness
Cord Clamp
• Connector trade size for this unit is 1/2” (12.7 mm). The connector can be bought at a hardware store. Refer to “How to connect
wiring to the terminals” for instructions on connecting depending on the wire type you are using.
• The fuse located in the outdoor unit provides power supply protection and may blow when power is applied if the system has
been incorrectly wired.
NOTE:
1. Remove the screws, then remove the control box cover.
2. Fasten the Inter unit wire harness and power supply to the conduit holder using the lock nut.
3. Connect inter-unit wire harness and power supply to the terminal.
Refer to the wiring diagram
4. Use the screws to install the control box cover.
Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit (size of wire and wiring method, etc. ).
Align the marks.
After hooking the indoor unit to the top hook, hook the fittings of the
indoor unit to the two bottom hooks while lowering the unit and
pushing it against the wall.
Indoor unit
Bend 2-3/4’’(R70)
with a pipe bender
Fig. 4
ELECTRICAL WIRING (OUTDOOR UNIT)
Do not bend the pipes in an angle more than 90°.
When pipes are repeatedly bent or stretched, the material will harden,
making it difficult to bend or stretch them any more. Do not bend or stretch
the pipes more than three times.
OK
The pipes are shaped by your hands. Be careful not to collapse them.
BENDING PIPES
L dimension
Thin pipe 1/4” (6.35 mm)dia. ...... 1/16” (1.4 to 1.7 mm)
Thick pipe 1/2” (12.7 mm)dia. ...... 5/64” (1.9 to 2.2 mm)
Check if [L] is flared uniformly
and is not cracked or scratched.
(1) Cut the connection pipe to the necessary length with a pipe cutter.
(2) Hold the pipe downward so that cuttings will not enter the pipe
and remove the burrs.
(3) Insert the flare nut onto the pipe and flare the pipe with a flaring
tool.
FLARING
(1) Install the outdoor unit wall cap (supplied with the optional installation set or procured at the site) to the wall pipe.
(2) Connect the outdoor unit and indoor unit piping.
(3) After matching the center of the flare surface and tightening the
nut hand tight, tighten the nut to the specified tightening torque
with a torque wrench. (Tighten the flare nut of the outdoor unit
3-way valve after air purging.)
CONNECTION
4. CONNECTING THE PIPING
●
●
[Installing the indoor unit]
●
●
●
(N)
The basic installation work procedures are the same as conventional refrigerant (R22) models.
However, pay careful attention to the following points:
(1) Since the working pressure is 1.6 times higher than that of conventional refrigerant(R22) models, some of the piping and installation and service tools are special.(See the table below.)
Especially, when replacing a conventional refrigerant(R22) model with a new refrigerant R410A
model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.
12-9/16” (32 cm)
5
4
(L)
3
2
1
SPLIT TYPE ROOM AIR CONDITIONER
POWER SUPPLY
1 phase, 208/230V
Connection cord
Wire
•
•
Terminal block
Terminal
board
Wire
Round
terminal
Screw with
special washer
Loop
Round
terminal
Screw with
special washer
Round
terminal
Conduit Connector
B. Strand wire
Screw
Conduit Holder
EARTH WIRE
THERMISTOR
CONNECTOR
THERMISTOR HOLDER
SCREW
CONNECTOR COVER
SCREW
SCREW
Refer to " FRONT PANEL REMOBAL AND INSTALLATION " to remove the front panel.
Remove screws of the heat exchanger, ang then remove grounding wire.
Remove 2 thermistor.
Remove screw, then remove the connector cover and connector.
Remove screw, then remove the control unit.
SCREW
(1)
(2)
(3)
(4)
(5)
CONTROL UNIT
Before setting up the wired remote control unit, please confirm whether air-conditioner can receive the
signal.
1. FRONT PANEL AND CONTROL UNIT REMOVAL
(7)
(6) Insure the length of wire is not over the recommended maxuim length.
(5) Select place that will not be affected by the heat from a stove, etc.
(4) Avoid place in direct sunlight.
(3) During installing or removing operation, be sure not to have wire catched by parts or draw it hard. Or it
may result troubles to the air-conditioner.
(2) Don't touch the heat exchanger.
(1) Before installing, be sure to disconnect all power supply.
CAUTION
The wired remote control unit is an option. It isn't included in main body of air-conditioner.
When you use wired remote control unit, some functions may not be used.
please use the recommended wired remote control unit.
(Before installing, Please read the FEATURES AND FUNCTIONS section of OPERATING MANUAL to confirm the
concerned contents.)
BEFORE INSTALL WIRED REMOTE CONTROL UNIT
•
Insulation
A. Solid wire
Screw
Cord clamp
Lock nut
(3) Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
(4) Securely earth the power cord plug.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
WIRED REMOTE CONTROL UNIT (OPTIONAL)
(1) Match the terminal block numbers and connection
cord colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric parts.
(2) Connect the connection cords firmly to the terminal
block. Imperfect installation may cause a fire.
CAUTION
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 3/8" (10 mm) to expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the terminal screw using a screwdriver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 15/16" (25 mm) to expose the solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
A. For solid core wiring (or F-cable)
Fig. 12
Fig. 14
Connection cord
HOW TO CONNECT WIRING TO THE TERMINALS
Screw
Cord clamp
Fig. 13
1. Remove the screws, then remove the conduit holder.
2. Fasten the inter-unit wire harness to the conduit holder using the lock nut.
IMPORTANT: Refer to Fig. 19 about the length of inter-unit wire harness.
3. Use the screws to install the conduit holder with which Inter-unit wire harness is included.
4. Remove the screws, then remove the cord clamp.
5. Connect inter-unit wire harness to the terminal.
Refer to the wiring diagram.
6. Use the screws to install the cord clamp.
Strip 3/8" (10 mm)
HOW TO THE INSTALL THE INTER-UNIT WIRE HARNESS
(Saddle)
Wall
(Outdoors)
(Sealer putty)
(Outside wall cap)
GOOD
Front panel
CLAMPER
CONNECTOR
[-] mark
Push
Top hole (center)
Top holes (two sides)
Indoor unit
Front panel
Top hooks
(two sides)
Wall hook bracket
CUT
End in water
Front panel
Knob
Intake grille
Top hook (center)
Front panel
Wave
BAD
Install Front panel and Control unit by the reverse procedures as stated in "1. FRONT PANEL AND CONTROL UNIT REMOVAL".
3. FRONT PANEL AND CONTROL UNIT INSTALLATION
TO RENOTE
CONNTROL UNIT
SCREW
CIRCUIT BOARD
(1) Connect the wire of wired remote control unit to the board of Control unit.
(2) Use wire clamper and screws to fasten wire.
(3) Cut off part of the control unit and thread wire through.
2. Connecting to control unit of wire
Bottom hole
(six position)
Indoor unit
Bottom hooks
(six position)
(1) Firstly, fit the lower part of the front panel, and insert top and bottom hooks. (Three top sides, six bottom sides)
(2) Four screws is attached.
(3) The intake grille is attached.
THE FRONT PANEL INSTALLATION
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove four screws.
(3) The thumb is hung on the lower part as shown in the figure, and it
pulls to the front, pushing [-] mark , and bottom hooks (two position) is removed from wall hook bracket.
(4) The front panel bottom is pulled to the front, and bottom hooks is
removed indoor unit.
(5) The front panel is pulled to the front, raising the upper surface,
and a front panel is removed.
Screws
(4 position)
Front panel
THE FRONT PANEL REMOVAL
Bearing
Mounting shaft
Intake grille
Lifted up
(1) The fixing axle of the intake grille is installed on the Panel.
(2) Lay down the intake grille.
Push
Fig. 17
Saddle
BAD
BAD
Connection pipe
Connection cord
View from indoors
Drain hose
THE INTAKE GRILLE INSTALLATION
(1) Open the intake grille.
(2) Pull down the knob.
(3) Lift the intake grille upward, until the axle at the top of the intake
grille is removed.
THE INTAKE GRILLE REMOVAL
Wall pipe
Drain hose
Check the following:
Drain hose
For connection from the left rear
Pipe
Seal A
Butt connection pipe (heat
insulation) against the indoor
unit pipe (heat insulation)
and wrap with seal A so that
there is no gap.
Left piping
Wrap with
cloth tape
Connection cord
Drain hose Cloth tape
Pipe
Vinyl tape
Indoor unit pipe (heat insulation)
Connection pipe
(heat insulation)
Fig. 15
FRONT PANEL REMOVAL AND INSTALLATION
Pipe
Fig. 16
(1) Insulate between pipes.
● For rear, right, and bottom piping, overlap the connection pipe
heat insulation and indoor unit pipe heat insulation and bind
them with vinyl tape so that there is no gap.
● For left and left rear piping, butt the connection pipe heat insulation and indoor unit pipe heat insulation together and bind them
with and vinyl tape so that there is no gap.
● For left and left rear piping, wrap the area which accommodates
the rear piping housing section with cloth tape.
● For left and left rear piping, bind the connection cord to the top
of the pipe with vinyl tape.
● For left and left rear piping, bundle the piping and drain hose
together by wrapping them with cloth tape over the range within
which they fit into the rear piping housing section.
(2) Temporarily fasten the connection cord along the connection pipe
with vinyl tape. (Wrap to about 1/3 the width of the tape from the
bottom of the pipe so that water does not enter.)
(3) Fasten the connection pipe to the outside wall with a saddle, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with
sealer so that rain water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
FINISHING
TEST RUNNING
Is operation of each button on the remote control unit normal?
Does each lamp light normally?
Do the air flow-direction louver operate normally?
Is the drain normal?
WARNING
Fig. 18
CAUTION
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature
adjustment, timer, air flow switching, and other remote control unit
operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
CUSTOMER GUIDANCE
(2) When the voltage is low and the air conditioner is
difficult to start, contact the power company the
voltage raised.
(1) The power source capacity must be the sum of
the air conditioner current and the current of other
electrical appliances. When the current contracted
capacity is insufficient, change the contracted capacity.
Test run button
Transmitter section
•
•
Install the remote control unit with a distance of 23 ft(7
m) between the remote control unit and the photocell
as the criteria. However, when installing the remote control unit, check that it operates positively.
Install the remote control unit holder to a wall, pillar,
etc. with the tapping screw (Fig.20).
1. REMOTE CONTROL UNIT HOLDER INSTALLATION
(1) Check that the indoor unit correctly receives the
signal from the remote control unit, then install
the remote control unit holder.
(2) Select the remote control unit holder selection
site by paying careful attention to the following:
Avoid places in direct sunlight.
Select a place that will not be affected by the heat
from a stove, etc.
CAUTION
REMOTE CONTROL UNIT INSTALLATION
Tapping
screw
(small)
Remote control
unit holder
Remote control unit
holder fixing
Fig. 20
Remote
control unit
2 Push
1 Set
Remote control
unit mounting
During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to breakage and even injury.
CAUTION
(1) Do the air purging of the charge hose by connecting the charging hose of gauge manifold to the charging port of 3 way valve and opening the
low-pressure valve slightly.
(2) Close the valve stem of 2 way valve completely.
(3) Start the cooling operation or following forced cooling operation.
When using the remote control unit
Press the TEST RUN button after starting the cooling operation by the remote control unit.
The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during test run.
When using the MANUAL AUTO button of the indoor unit (The remote control unit is lost, and so on.)
Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.
(The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more than 10 seconds.)
(4) Close the valve stem of 3 way valve when the reading on the compound pressure gage becomes 0.05~0 MPa (0.5~0 kg/cm2).
(5) Stop the operation.
• Press the START/STOP button of the remote control unit to stop the operation.
• Press the MANUAL AUTO button when stopping the operation from indoor unit side.
(It is not necessary to press on keeping for more than 10 seconds.)
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover refrigerant by doing the cooling operation or
forced cooling operation according to the following procedure. (When the cooling operation cannot start in winter, and so on, start the forced
cooling operation.)
PUMP DOWN OPERATION (FORCED COOLING OPERATION)
(7) Install a leakage circuit breaker in accordance with
the related laws and regulations and electric company standards.
(6) Perform wiring work in accordance with standards so that the air conditioner can be operated
safely and positively.
(5) Do not extend the power cord.
(4) Use a circuit breaker and receptacle matched to
the capacity of the air conditioner.
(3) Always use a special branch circuit and install a
special receptacle to supply power to the room
air conditioner.
(2) Before turning on the power, check if the voltage
is within the 208 V-10% to 230V+10% range.
(1) The rated voltage of this product is 208/230 V AC
60 Hz.
POWER
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
2. OUTDOOR UNIT
(1)
(2)
(3)
(4)
1. INDOOR UNIT
● Perform test operation and check items 1 and 2 below.
● For the test operation method, refer to the operating manual.
● The outdoor unit, may not operate, depending on the room temperature. In this case, press the test run button on the remote control unit
while the air conditioner is running, (Point the transmitter section of the remote control unit toward the air conditioner and press the test run
button with the tip of a ball-point pen, etc.)
● To end test operation, press the remote control unit START/STOP button.
(When the air conditioner is run by pressing the test run button, the OPERATION indicator lamp and TIMER indicator lamp will simultaneously
flash slowly.)
To connect inter-unit wire harness to the terminal correctly, please
refer to Fig. 19 to adjust the length of the part of Inter-unit Wire
harness ahead from conduit holder.
The method of adjusting inter-unit wire harness
Fig. 19
15/16" (25mm)
5-1/2" (140mm)
ELECTRICAL WIRING (INDOOR UNIT)
Strip 15/16" (25 mm)
14AWG
EARTH WIRE
15/16" (25mm)
4-3/16" (105mm)
CONDUIT CONNECTOR
CONDUIT PLATE
(1:1)
1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan
GS01012006
JAN 2006 Printed in Japan
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