General ARHA18L, ARHA18LATN, AOHA18LACL, ARHA24L, ARHA24LATN Service Manual
...
SPLIT TYPE
ROOM AIR CONDITIONER
SERVICE
INSTRUCTION
Models Indoor unit Outdoor unit
AR*A12LATN
AR*A14LATN
AR*A18LATN
AR*A24LATN
AR*A36LATN
AR*A45LATN
DUCT
INVERTER
type
AO*A12LACL
AO*A14LACL
AO*A18LACL
AO*A24LACL
AO*A36LATL
AO*A45LATL
R410A
CONTENTS
1. SPECIFICATIONS
SPECIFICATIONS.......................................................................................................... 01-01
2. DIMENSIONS
DIMENSIONS.................................................................................................................. 02-01
3. REFRIGERANT SYSTEM DIAGRAM
REFRIGERANT CIRCUIT............................................................................................... 03-01
4. CIRCUIT DIAGRAM
CIRCUIT DIAGRAM........................................................................................................ 04-01
5. DESCRIPTION OF EACH CONTROL OPERATION
5-1 COOLING OPERATION............................................................................................
5-1-1 COOLING CAPACITY CONTROL......................................................................
5-2 HEATING OPERATION.............................................................................................
5-2-1 HEATING CAPACITY CONTROL......................................................................
5-3 DRY OPERATION......................................................................................................
5-3-1 INDOOR UNIT CONTROL.................................................................................
5-4 AUTO CHANGEOVER OPERATION........................................................................
5-5 INDOOR FAN CONTROL.........................................................................................
5-6 OUTDOOR FAN CONTROL......................................................................................
5-7 COMPRESSOR CONTROL......................................................................................
5-8 TIMER OPERATION CONTROL...............................................................................
5-9 ELECTRONIC EXPANSION VALVE CONTROL....................................................
5-10 TEST OPERATION CONTROL...............................................................................
5-11 PREVENT TO START FOR 3 MINUTES (3 MINUTES ST)....................................
5-12 4-WAY VALVE EXTENSION SELECT....................................................................
5-13 AUTO RESTART.....................................................................................................
05-01
05-01
05-02
05-02
05-03
05-03
05-04
05-05
05-08
05-10
05-11
05-13
05-13
05-13
05-14
05-14
5-14 PUMP DOWN (For AR*30/ 36/ 45LUAN/ 45/ 54LUAK)..........................................
5-15 COMPRESSOR PREHEATING...............................................................................
5-16 FRESH AIR CONTROL...........................................................................................
5-17 EXTERNAL ELECTRICAL HEATER CONTROL....................................................
5-18 DEFROST OPERATION CONTROL.......................................................................
5-19 OFF DEFROST OPERATION CONTROL...............................................................
5-20 ECONOMY OPERATION.........................................................................................
5-21 VARIOUS PROTECTIONS......................................................................................
5-22 FORCED COOLING OPERATION..........................................................................
5-23 COMPRESSOR STOP CONTROL..........................................................................
05-14
05-14
05-15
05-15
05-16
05-18
05-19
05-20
05-22
05-22
6. REFRIGERANT CAUTION -R410A-
6-1 R410A TOOLS............................................................................................................ 06-01
6-2 PRECAUTION FOR INSTALLATION.........................................................................
6-3 PRECAUTION FOR SERVICING...............................................................................
6-4 NEW REFRIGERANT R410A.....................................................................................
6-5 DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS.......
06-02
06-04
06-05
06-08
7. TROUBLE SHOOTING
7-1 ERROR DISPLAY......................................................................................................
7-1-1 WIRED REMOTE CONTROLLER DISPLAY......................................................
7-1-2 OUTDOOR UNIT DISPLAY................................................................................
7-2 TROUBLE SHOOTING WITH ERROR CODE..........................................................
7-3 TROUBLE SHOOTING WITH NO ERROR CODE....................................................
7-4 SERVICE PARTS INFORMATION............................................................................
07-01
07-01
07-03
07-04
07-30
07-35
8. APPENDING DATA
8-1 CAPACITY TABLE..................................................................................................... 08-01
8-2 OPERATION RANGE.................................................................................................
8-3 ELECTRIC CHARACTERISTICS...............................................................................
8-4 SAFETY DEVICE........................................................................................................
8-5 FUNCTION SETTING.................................................................................................
8-5-1 INDOOR UNIT....................................................................................................
8-5-2 Procedures to change the Function Setting........................................................
8-5-3 WIRED REMOTE CONTROLLER......................................................................
9. INSTALLATION MANUAL
08-07
08-08
08-10
08-10
08-12
08-14
08-15
DUCT type
R410A
INVERTER
1 . SPECIFICATIONS
1. SPECIFICATIONS FOR INDOOR UNIT
AR A12LATN AR A14LATN
Pipe type
9.52 ( 3 / 8 in.) 12.70 ( 1 / 2 in.)
Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
dB(A)
Remote controller type
Drain pipe
Material
Size
Operation range
Cooling
kg(lb.)
Connection pipe
SizemmWeight
m3/h
Fan
Dimensions
( H×W ×D )
mm
Airflow
rate
Enclosure
Heat exchanger type
Sound pressure level
Heating
Cooling
Heating
Heating
Cooling
Moisture removal
Cooling
Heating
Rated
*Max.
Rated
*Max.
kW/kW
Input power
Cooling
kW
Heating
Rated
*Max.
Current
Cooling
A
Power source
Available voltage range
Capacity
Cooling
Heating
European energy label
Type
Model name
mm
Rated
Min.-Max.
Rated
Min.-Max.
Rated
*Max.
DUCTED MODEL
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Sirocco × 2
60
0 to 90
Copper
Aluminium
Steel
217 × 953 × 595
324 × 1075 × 686
Wired
PS
Outer diameter : 26.0 / Inner diameter : 21.5
6.35 ( 1 / 4 in.)
Flare
18 to 32
80 or less
30 or less
Cooling A A
Heating A A
kW 3.5 4.3
BTU/h 11950 14650
kW 0.9 - 4.4 0.9 - 5.4
BTU/h 3100 - 15000 3100 - 18400
kW 4.1 5.0
BTU/h 14000 17050
kW 0.9 - 5.7 0.9 - 6.5
BTU/h 3100 - 19400 3100 - 22100
1.05 1.33
1.73 2.07
1.11 1.34
2.30 2.88
4.6 5.8
7.5 9.0
4.9 5.9
10.0 12.5
EER 3.33 3.21
COP 3.69 3.71
l/h (pints/h) 1.3 ( 2.3 ) 1.5 ( 2.6 )
High 720 820
Med 630 720
Low 560 610
Quiet 480 550
High 720 820
Med 630 720
Low 560 610
Quiet 480 550
Type × Q'ty
Motor output W
Recommended static pressure Pa
High 32 33
Med 30 31
Low 28 29
Quiet 26 27
High 32 33
Med 30 31
Low 28 29
Quiet 26 27
Dimensions (H × W × D) 294 × 700 × 26.6 294 × 700 × 39.9
Fin pitch 1.30 1.30
Rows x Stages 2 × 14 3 × 14
Fin type
Material
Colour - -
Net
Gross
Net 23 ( 51 ) 23 ( 51 )
Gross 27 ( 60 ) 27 ( 60 )
Liquid
Gas
Method
Heating °C
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Standard static pressure : 0 Pa
Sound pressure level : Install a 2m duct to the outlet port and a 1m duct to the suction port and measure.
*The maximum current and the maximum input value are the maximum values when operated within the operation (temperature) range.
°C
%RH
mm
01-01
DUCTED MODEL
AR A18LATN
230V 50Hz
198-264V 50Hz
Pipe type Copper
6.35 ( 1 / 4 in.)
12.70 ( 1 / 2 in.)
Type
Model name
mm
Rated
Min-Max
Rated
Min-Max
Rated
Min-Max
Power source
Available voltage range
Capacity
Cooling
Heating
European energy label
kW/kW
Input power
Cooling
kW
Heating
Rated
Min-Max
Current
Cooling
A
Rated
Max
Rated
Max
Heating
Cooling
Heating
Heating
Cooling
Moisture removal
Cooling
Heating
mm
Weight
m3/h
Fan
Dimensions
( H × W × D )
mm
Airflow
rate
Enclosure
Heat exchanger type
Sound pressure level
dB(A)
Remote controller type
Drain pipe
Material
Size
Operation range
Cooling
kg(lb.)
Connection pipe
Size
INVERTER HEATPUMP
Cooling A
Heating A
kW 5.2
BTU/h 17700
kW 0.9 - 5.9
BTU/h 3100 - 20100
kW 6.0
BTU/h 20500
kW 0.9 - 7.5
BTU/h 3100 - 25600
1.62
0.09 - 1.80
1.66
0.09 - 2.46
7.1
9.0
7.3
10.8
EER 3.21
COP 3.61
l/h (pints/h) 2.0 ( 3.5 )
High 820
Med 720
Low 610
Quiet 550
High 820
Med 720
Low 610
Quiet 550
Type × Q'ty Sirocco × 2
Motor output W 60
Recommended static pressure Pa 0 to 90
High 33
Med 31
Low 29
Quiet 27
High 33
Med 31
Low 29
Quiet 27
Dimensions (H × W × D) 294 × 700 × 39.9
Fin pich 1.30
Rows x Stages 3 × 14
Fin type Aluminium
Material Steel
Colour
Net 217 × 953 × 595
Gross 324 × 1075 × 686
Net 23 ( 51 )
Gross 27 ( 60 )
Liquid
Gas
Method Flare
°C 18 to 32
%RH 80 or less
Heating °C 30 or less
mm Outer diameter: 26.0 / Inner diameter: 21.5
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Standard static pressure : 0 Pa
Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
Sound pressure level : Install a 2m duct to the outlet port and a 1m duct to the suction poit and measure.
-
Wired
PS
01-02
DUCTED MODEL
AR A24LATN
230V 50Hz
198-264V 50Hz
Pipe type Copper
6.35 ( 1 / 4 in.)
15.88 ( 5 / 8 in.)
Type
Model name
mm
Rated
Min-Max
Rated
Min-Max
Rated
Min-Max
Power source
Available voltage range
Capacity
Cooling
Heating
European energy label
kW/kW
Input power
Cooling
kW
Heating
Rated
Min-Max
Current
Cooling
A
Rated
Max
Rated
Max
Heating
Cooling
Heating
Heating
Cooling
Moisture removal
Cooling
Heating
mm
Weight
m3/h
Fan
Dimensions
( H × W × D )
mm
Airflow
rate
Enclosure
Heat exchanger type
Sound pressure level
dB(A)
Remote controller type
Drain pipe
Material
Size
Operation range
Cooling
kg(lb.)
Connection pipe
Size
INVERTER HEATPUMP
Cooling A
Heating A
kW 7.1
BTU/h 24200
kW 0.9 - 8.0
BTU/h 3100 - 27300
kW 8.0
BTU/h 27300
kW 0.9 - 9.1
BTU/h 3100 - 31000
2.21
0.09 - 2.62
2.21
0.09 - 2.77
9.7
11.5
9.7
12.2
EER 3.21
COP 3.61
l/h (pints/h) 2.5 (4.4)
High 1100
Med 950
Low 800
Quiet 600
High 1100
Med 950
Low 800
Quiet 600
Type × Q'ty Sirocco × 2
Motor output W 115
Recommended static pressure Pa 30 to 150
High 31
Med 29
Low 27
Quiet 25
High 31
Med 29
Low 27
Quiet 25
Dimensions (H × W × D) 294 × 1000 × 39.9
Fin pich 1.40
Rows x Stages 3 × 14
Fin type Aluminium
Material Steel
Colour
Net 270 × 1135 × 700
Gross 300 × 1300 × 790
Net 38 ( 84 )
Gross 45 ( 99 )
Liquid
Gas
Method Flare
°C 18 to 32
%RH 80 or less
Heating °C 30 or less
mm Outer diameter: 38.0 / Inner diameter: 36.0
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Standard static pressure : 30 Pa
Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
Sound pressure level : Install a 2m duct to the outlet port and a 1m duct to the suction poit and measure.
01-03
-
Wired
Steel
AR A36LATN AR A45LATN
Cooling A A
Pipe type Copper Copper
9.52 ( 3 / 8 in.) 9.52 ( 3 / 8 in.)
15.88 ( 5 / 8 in.) 15.88 ( 5 / 8 in.)
DUCTED MODEL
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
dB(A)
Remote controller type
Drain pipe
Material
Size
Operation range
Cooling
kg(lb.)
Connection pipe
SizemmWeight
m3/h
Fan
Dimensions
( H × W × D )
mm
Airflow
rate
Enclosure
Heat exchanger type
Sound pressure level
Heating
Cooling
Heating
Heating
Cooling
Moisture removal
Cooling
Heating
Rated
*Max.
Rated
*Max.
kW/kW
Input power
Cooling
kW
Heating
Rated
*Max.
Current
Cooling
A
Power source
Available voltage range
Capacity
Cooling
Heating
European energy label
Type
Model name
mm
Rated
Min.-Max.
Rated
Min.-Max.
Rated
*Max.
Heating A A
kW 10.0 12.5
BTU/h 34100 42700
kW 3.8 - 11.2 4.0 - 14.0
BTU/h 13000 - 38200 13700 - 47800
kW 11.2 14.0
BTU/h 38200 47800
kW 4.0 - 14.0 4.2 - 16.2
BTU/h 13700 - 47800 14300 - 55300
3.11 3.89
4.33 4.56
3.02 3.77
4.33 4.56
13.6 17.0
19.0 20.0
13.2 16.5
19.0 20.0
EER 3.21 3.21
COP 3.71 3.71
l/h (pints/h) 3.0 (5.3) 3.5 (6.2)
High 2020 2250
Med 1710 1710
Low 1340 1340
Quiet 1020 1020
High 2020 2250
Med 1710 1710
Low 1340 1340
Quiet 1020 1020
Type × Q'ty Sirocco × 2 Sirocco × 2
Motor output W 197 197
Recommended static pressure Pa 30 to 150 30 to 150
High 42 44
Med 37 38
Low 32 33
Quiet 29 29
High 42 44
Med 37 38
Low 32 33
Quiet 29 29
Dimensions (H × W × D) 294 × 1000 × 53.2 294 × 1000 × 53.2
Fin pitch 1.40 1.40
Rows x Stages 4 × 14 4 × 14
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Standard static pressure : 30Pa
Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
Sound pressure level : Install a 2m duct to the outlet port and a 1m duct to the suction poit and measure.
*The maximum current and the maximum input value are the maximum values when operated within the operation (temperature) range.
Fin type Aluminium Aluminium
Material Steel Steel
Colour - -
Net 270 × 1135 × 700 270 × 1135 × 700
Gross 300 × 1300 × 790 300 × 1300 × 790
Net 41 ( 90 ) 41 ( 90 )
Gross 48 ( 106 ) 48 ( 106 )
Liquid
Gas
Method Flare Flare
°C 18 to 32 18 to 32
%RH 80 or less 80 or less
Heating °C 30 or less 30 or less
Wired Wired
Steel Steel
mm Outer diameter : 38.0 / Inner diameter : 36.0 Outer diameter : 38.0 / Inner diameter : 36.0
01-04
2. SPECIFICATIONS FOR OUTDOOR UNIT
AO A12LACL AO A14LACL
9.52 ( 3/8 in.) 12.70 ( 1/2 in.)
Cooling
Heating
Type
Gross
Liquid
Gas
Method
Colour
Net
Gross
Net
Motor output
Type
Charge
Material
Rows x Stages
Pipe type
Fin type
Type × Q'ty
Motor output
Cooling
Heating
Dimensions (H × W × D)
Type
Model name
Power source
Available voltage range
578 × 790 × 300
25 (chargeless : 15)
15
546 × 876 × 18.2
546 × 842 × 18.2
1.30
2 × 26
Copper
Aluminium
Steel sheet
Beige (10YR7.5/1.0NN)
54
°C
Operation range
Fan
Airflow
rate
m3/h
dB(A)
mm
mm
Weight
kg(lb.)
Dimensions
(H × W × D)
Refrigerant oil
Enclosure
Heat exchanger type
Fin pitch
Compressor
Refrigerant
Sound pressure level
Starting current
Cooling
Heating
Type × Q'ty
m
Connection pipe
Size
mm
Max. length
Max. height difference
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Propeller × 1
Twin Rotary × 1
1100
R410A
POE
Flare
-10 to 46
-15 to 24
648 × 910 × 380
6.35 ( 1/4 in.)
A 4.9 5.9
1780 1910
1630 1740
W
47 49
48 49
W
g 1150 1250
40 (88) 40 (88)
44 (97) 44 (97)
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27°CDB/19°CWB. and outdoor temperature of 35°CDB/24°CWB.
Heating : Indoor temperature of 20°CDB/15°CWB. and outdoor temperature of 7°CDB/6°CWB.
Pipe length : 7.5 m, Height difference : 0 m. (Outdoor unit - Indoor unit)
01-05
AO A18LACL AO A24LACL
A 7.7 10.0
546 × 876 × 18.2
546 × 842 × 18.2
546 × 866 × 18.2
546 × 832 × 18.2
504 × 589 × 18.2
2 × 26
1 × 24
12.70 ( 1/2 in.) 15.88( 5/8 in.)
Cooling
Heating
Dimensions (H × W × D)
Charge
Type
Material
Colour
Motor output
Cooling
Heating
Fin pich
Type
Model name
Power source
Available voltage range
°C
Operation range
Fan
Airflow
rate
m3/h
dB(A)
mm
mm
Weight
kg(lb.)
Dimensions
( H × W × D)
Net
Gross
Net
Gross
Refrigerant oil
Enclosure
Heat exchanger type
Rows x Stages
Pipe type
Fin type
Type × Q'ty
Motor output
Type
Compressor
Refrigerant
Sound pressure level
Type × Q'ty
Starting currente
Cooling
Heating
m
Connection pipe
Size
mm
Liquid
Gas
Method
Max. length
Max. height difference
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Propeller × 1
Copper
Aluminium
Steel sheet
Beige (10YR7.5/1.0NN)
Twin Rotary × 1
1100
R410A
POE
Flare
-10 to 46
-15 to 24
648 × 910 × 380
6.35 ( 1/4 in.)
2000 2470
1910 2470
W 54 65
50 52
50 53
1.30 1.40
2 × 26
W
g 1250 1700
578 × 790 × 300 578 × 790 × 315
40 (88) 44 (97)
44 (97) 48 (106)
25(chargeless : 15) 30(chargeless : 15)
15 20
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27°CDB/19°CWB. and outdoor temperature of 35°CDB/24°CWB.
Heating : Indoor temperature of 20°CDB/15°CWB. and outdoor temperature of 7°CDB/6°CWB.
Pipe length : 7.5 m, Height difference : 0 m. (Outdoor unit - Indoor unit)
01-06
AO A36LATL AO A45LATL
A 15.0 15.0
1260 × 900 × 36.4
1260 × 900 × 36.4
Colour
Net
Gross
Motor output
Type
Charge
Type
Material
Motor output
Cooling
Heating
Dimensions (H × W × D)
Type
Model name
Power source
Available voltage range
1290 × 900 × 330
98 (216)
107 (236)
15.88 ( 5/8 in.)
Flare
-15 to 46
-15 to 24
1430 × 1050 × 445
9.52 ( 3/8 in.)
Copper
Aluminium
Steel sheet
Beige (10YR7.5/1.0NN)
Twin Rotary × 1
3750
R410A
POE
3350
INVERTER HEATPUMP
230V 50Hz
198-264V 50Hz
Propeller × 2
m
Connection pipe
Size
mm
Liquid
Gas
Method
Max. length
Max. height difference
Compressor
Refrigerant
Sound pressure level
Starting current
Cooling
Heating
Type × Q'ty
Refrigerant oil
Enclosure
Heat exchanger type
Fin pitch
Rows x Stages
Pipe type
Fin type
Type × Q'ty
mm
Weight
kg(lb.)
Dimensions
(H × W × D)
Net
Gross
°C
Operation range
Fan
Airflow
rate
m3/h
dB(A)
mm
Cooling
Heating
6600 6600
6600 6600
W 103 × 2 103 × 2
54 55
55 56
1.30 1.30
2 × 60 2 × 60
W
g
50 (chargeless : 20) 50 (chargeless : 20)
30 30
Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27°CDB/19°CWB. and outdoor temperature of 35°CDB/24°CWB.
Heating : Indoor temperature of 20°CDB/15°CWB. and outdoor temperature of 7°CDB/6°CWB.
Pipe length : 7.5 m, Height difference : 0 m. (Outdoor unit - Indoor unit)
01-07
DUCT type
R410A
INVERTER
2 . DIMENSIONS
2. DIMENSIONS
MODEL : AR*A12LATN / AO*A12LACL
AR*A14LATN / AO*A14LACL
886
850
390
(Unit : mm)
1
2
Top view
953
920
600
150
Front view
1
Refrigerant piping flare connection (Gas)
2
Refrigerant piping flare connection (Liquid)
3
Drain piping connection
150
85 75
12
595
57520
364
Side view
194
217
3
Front view
Air flow
(Unit : mm)
Side view
Bottom view
02-01
MODEL : AR*A18LATN / AO*A18LACL
886
850
390
1
2
Top view
(Unit : mm)
953
920
600
150
Front view
1
Refrigerant piping flare connection (Gas)
2
Refrigerant piping flare connection (Liquid)
3
Drain piping connection
150
85 75
Side view
364
12
595
57520
194
217
3
(Unit : mm)
Front view
Air flow
Bottom view
Side view
02-02
MODEL : AR*A24LATN / AO*A24LACL
Front view
(Unit : mm)
Side view (L)
Front view
Top view
Rear view
Side view (R)
Refrigerant piping flare connection (Gas)
Refrigerant piping flare connection (Liquid)
Drain piping connection
Drain piping connection with cap.
Knock out hole for fresh air.
(Unit : mm)
Side view
Air flow
Bottom view
02-03
MODEL : AR*A36LATN / AO*A36LATL
AR*A45LATN / AO*A45LATL
Front view
(Unit : mm)
Side view (L)
Top view
Rear view
900
1290
77 31
12330
Side view (R)
Refrigerant piping flare connection (Gas)
Refrigerant piping flare connection (Liquid)
Drain piping connection
Drain piping connection with cap.
Knock out hole for fresh air.
(Unit : mm)
21
370
Drain cap mounting
places
9
Front view
650
Air flow
Bottom view
4-Ø12mm hole
02-04
400
Side view
151
170
196
99
DUCT type
R410A
INVERTER
3 . REFRIGERANT SYSTEM DIAGRAM
3. REFRIGERANT CIRCUIT
MODEL : AR*A12LATN / AO*A12LACL
Outdoor Unit Indoor Unit
MUFFLER
THHM
MUFFLER
Refrigerant Pipe
Ø9.52mm(3/8")
3-way
VALVE
4-Way
valve
THD
CONDENSER EVAPOLATOR
THC
ACCUMULATOR
COMPRESSOR
THO
THHO
THC
THD
THHM
THHO
THO
EXPANSION
VALVE
THERMISTOR(COMPRESSOR TEMP.)
THERMISTOR(DISCHARGE TEMP.)
THERMISTOR(HEAT EXCHANGER MED TEMP.)
THERMISTOR(HEAT EXCHANGER OUT TEMP.)
THERMISTOR(OUTDOOR TEMP.)
STRAINERSTRAINER
2-way
VALVE
Refrigerant Pipe
Ø6.35mm(1/4")
THR
THPI
THR
THERMISTOR(ROOM TEMP.)
THPI
THERMISTOR(PIPE TEMP.)
COOL
HEAT
03-01
MODEL : AR*A14LATN / AO*A14LACL
AR*A18LATN / AO*A18LACL
Outdoor Unit Indoor Unit
MUFFLER
THHM
MUFFLER
Refrigerant Pipe
Ø12.7mm(1/2")
3-way
VALVE
4-Way
valve
THD
CONDENSER EVAPOLATOR
THC
ACCUMULATOR
COMPRESSOR
THO
THHO
THC
THD
THHM
THHO
THO
EXPANSION
VALVE
THERMISTOR(COMPRESSOR TEMP.)
THERMISTOR(DISCHARGE TEMP.)
THERMISTOR(HEAT EXCHANGER MED TEMP.)
THERMISTOR(HEAT EXCHANGER OUT TEMP.)
THERMISTOR(OUTDOOR TEMP.)
STRAINERSTRAINER
2-way
VALVE
Refrigerant Pipe
Ø6.35mm(1/4")
THR
THPI
THR
THERMISTOR(ROOM TEMP.)
THPI
THERMISTOR(PIPE TEMP.)
COOL
HEAT
03-02
MODEL : AR*A24LATN / AO*A24LACL
Outdoor Unit Indoor Unit
MUFFLER
THHM
MUFFLER
Refrigerant Pipe
Ø15.88mm(5/8")
3-way
VALVE
4-Way
valve
THD
CONDENSER EVAPOLATOR
THC
ACCUMULATOR
COMPRESSOR
THO
THHO
THC
THD
THHM
THHO
THO
EXPANSION
VALVE
THERMISTOR(COMPRESSOR TEMP.)
THERMISTOR(DISCHARGE TEMP.)
THERMISTOR(HEAT EXCHANGER MED TEMP.)
THERMISTOR(HEAT EXCHANGER OUT TEMP.)
THERMISTOR(OUTDOOR TEMP.)
STRAINERSTRAINER
2-way
VALVE
Refrigerant Pipe
Ø6.35mm(1/4")
THR
THPI
THR
THERMISTOR(ROOM TEMP.)
THPI
THERMISTOR(PIPE TEMP.)
COOL
HEAT
03-03
MODEL : AR*30/ 36LUAN / AO*30/ 36LMAWL
Outdoor Unit Indoor Unit
THHM
HIGH PRESSURE
SWITCH
PRESSURE
CHECK VALVE
STRAINER
Refrigerant Pipe
Ø15.88mm(5/8")
Charging Valve
4-Way
CONDENSER
THD
valve
MUFFLER
THC
ACCUMULATOR
EVAPOLATOR
COMPRESSOR
THO
THR
THHO
EXPANSION
THPI
VALVE
STRAINER
STRAINER
Refrigerant Pipe
Ø9.52mm(3/8")
Charging Valve
THC
THD
THHM
THHO
THO
THERMISTOR(COMPRESSOR TEMP.)
THERMISTOR(DISCHARGE TEMP.)
THERMISTOR(HEAT EXCHANGER MED TEMP.)
THERMISTOR(HEAT EXCHANGER OUT TEMP.)
THERMISTOR(OUTDOOR TEMP.)
THR
THERMISTOR(ROOM TEMP.)
THPI
THERMISTOR(PIPE TEMP.)
COOL
HEAT
03-04
DUCT type
R410A
INVERTER
4 . CIRCUIT DIAGRAM
4. CIRCUIT DIAGRAM
MODEL : AR*A12/ 14/ 18LATN
04-01
MODEL : AR*A24/ 36/ 45LATN
COIL
04-02
MODEL : AO*A12/ 14/ 18/ 24LACL
04-03
MODEL : AO*A36/ 45LATL
04-04
DUCT type
R410A
INVERTER
5 . DESCRIPTION OF EACH
CONTROL OPERATION
5-1. COOLING OPERATION
5-1-1 COOLING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit 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 2 degC higher than a set temperature,
the compressor operation frequency will attain to maximum performance.
* If the room temperature is 2.5 degC lower than a set temperature, the compressor will be stopped.
* When the room temperature is between +2 degC to -2.5 degC 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 )
AR*A12LATN 18Hz
AR*A14LATN
AR*A18LATN
AR*A24LATN 18Hz 113Hz
AR*A36LATN
AR*A45LATN
( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
34°C
30°C
19°C
10°C
0°C
A zone
B zone
C zone
D zone
E zone
F zone
When the room
temperature drops
minimum
frequency
18Hz
18Hz
18Hz 70Hz
18Hz 77Hz
maximum
frequency
113Hz
113Hz
When the room
temperature rises
36°C
32°C
21°C
12°C
2°C
80Hz
Fan speed mode
AR*A12LATN
AR*A14LATN
AR*A18LATN
AR*A24LATN
AR*A36LATN
AR*A45LATN
Hi Me Lo Quiet
A zone 80Hz
B zone
C zone
D-F zone
A zone
B zone
C zone
D-F zone
A zone
B zone
C zone
D-F zone
A zone
B zone
C zone
D-F zone
A zone
B zone
C zone
D-F zone
A zone
B zone
C zone
D-F zone
80Hz
80Hz
49Hz
113Hz
113Hz
80Hz
54Hz
113Hz
113Hz
80Hz
54Hz
113Hz
113Hz
80Hz
54Hz
70Hz
70Hz
48Hz
37Hz
77Hz
77Hz
55Hz
41Hz
49Hz
49Hz
49Hz 42Hz
38Hz 30Hz
66Hz
66Hz
54Hz 45Hz
45Hz 38Hz
66Hz
66Hz
54Hz 45Hz
45Hz 38Hz
66Hz
66Hz
54Hz 45Hz
45Hz 38Hz
43Hz
43Hz
37Hz 33Hz
33Hz 29Hz
48Hz
48Hz
41Hz 37Hz
37Hz 33Hz
42Hz
42Hz
54Hz
54Hz
54Hz
54Hz
54Hz
54Hz
37Hz
37Hz
41Hz
41Hz
34Hz
34Hz
34Hz
22Hz
34Hz
34Hz
34Hz
24Hz
34Hz
34Hz
34Hz
24Hz
34Hz
34Hz
34Hz
24Hz
29Hz
29Hz
29Hz
23Hz
31Hz
31Hz
31Hz
25Hz
05-01
5-2. HEATING OPERATION
5-2-1 HEATING CAPACITY CONTROL
A sensor (room temperature thermistor) built in the indoor unit 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 3 degC than a set temperature,
the compressor operation frequency will attain to maximum performance.
* If the room temperature is higher 2.5 degC than a set temperature, the compressor
will be stopped.
* When the room temperature is between +2.5 degC to -3 degC 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 outdoor temperature.
( Table 2 : Compressor Frequency Range )
minimum
frequency
AR*A12LATN 18Hz
AR*A14LATN
AR*A18LATN
AR*A24LATN 18Hz 120Hz
AR*A36LATN
AR*A45LATN
18Hz
18Hz
18Hz 90Hz
18Hz 90Hz
maximum
frequency
120Hz
120Hz
120Hz
( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )
Outdoor air
temperature
19°C
14°C
When the room
temperature rises
C zone
B zone
A zone
17°C
12°C
When the room
temperature drops
Fan speed mode
AR*A12LATN
AR*A14LATN
AR*A18LATN
AR*A24LATN
AR*A36LATN
AR*A45LATN
Hi
Me+
A zone 120Hz
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
A zone
B zone
C zone
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
120Hz
90Hz
90Hz
90Hz
90Hz
90Hz
90Hz
Me Lo Quiet
70Hz
70Hz
70Hz 60Hz
101Hz
101Hz
101Hz 75Hz
101Hz
101Hz
101Hz 75Hz
101Hz
101Hz
101Hz 75Hz
66Hz
66Hz
66Hz 53Hz
66Hz
66Hz
66Hz 53Hz
60Hz
60Hz
75Hz
75Hz
75Hz
75Hz
75Hz
75Hz
53Hz
53Hz
53Hz
53Hz
49Hz
49Hz
49Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
60Hz
45Hz
45Hz
45Hz
45Hz
45Hz
45Hz
05-02
5-3. DRY OPERATION
5-3-1 INDOOR UNIT CONTROL
The compressor rotation frequency shall change according to set temperature and room
temperature variation which the room temperature sensor of the indoor unit has detected
as shown in the Fig 3.
( Table 3 : Compressor frequency )
Operating frequency
AR*A12LATN 34Hz
AR*A14LATN
AR*A18LATN
AR*A24LATN 34Hz
AR*A36LATN
AR*A45LATN
( Fig.3 : Compressor Control based on Room Temperature )
Room
temperature
Compressor ON
34Hz
34Hz
31Hz
31Hz
Room
temperature
Ts+1.5 degC
Ts+0.5 degC
Compressor OFF
( Fig.4 : Indoor Fan Control )
Compressor
ON
OFF
Indoor fan
Dry air flow
S-Lo
OFF
Ts : Setting temperature
10 30 60 180 60 180 60 10 30
05-03
(SEC)
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