LG A2UN186FA0 User manual

Multi Type Room
Air Conditioner
SERVICE MANUAL
INDOOR UNIT: AMNN076L/M/NQA0
AMNN096L/M/NQA0
AMNN126L/M/NRA0
AMNN186L/M/NTA0
AMNN246L/M/NTA0
AMNN096APA0
AMNN126APA0
AMNN126TEA0
AMNN186TEA0
AMNN186VBA0
OUTDOOR UNIT: A2UN186FA0
A3UN216FA0
A4UN306FA0

Functions...................................................................................................................................... 3
Product Specifications.................................................................................................................6
Dimensions..................................................................................................................................10
Wiring Diagram ...........................................................................................................................15
Refrigeration Cycle Diagram......................................................................................................17
Operation Details ........................................................................................................................18
Display Function.........................................................................................................................34
Self-diagnosis Function .............................................................................................................34
Installation...................................................................................................................................35
Operation.....................................................................................................................................73
Disassembly of the parts (Indoor Unit).....................................................................................77
Valve service(3-way)...................................................................................................................86
Cycle Troubleshooting Guide ....................................................................................................90
Electronic Parts Troubleshooting Guide...................................................................................91
Electronic Control Device ........................................................................................................104
Schematic Diagram...................................................................................................................111
Exploded View and Replacement Parts List...........................................................................116
- 2 -
Contents

- 3 -
Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• Room/Art Cool/Convertible Type Indoor Unit: High, Med, Low, Chaos
• Cassette Type Indoor Unit: High, Mde, Low, Auto
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode • Both the indoor and outdoor fan
stops during deicing.
• Hot start after deice ends.
• The indoor fan stops until the
evaporator piping temperature will be
reached at 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Deice (defrost) control (Heating)
• The fan is switched to intermittent or irreg-
ular operation
• The fan speed is automatically switched
from high to low speed.
• Room/Art Cool/Convertible type Indoor Unit
-- Lights up in operation
-- Lights up in Sleep Mode
-- Lights up in Timer Mode
-- Lights up in Deice Mode
• Cassette type Indoor Unit
-- Lights up in Operation
-- Lights up in Filter replacement
-- Lights up in Timer Mode
-- Lights up in Defrost Mode or Hot Start Operation.
-- Operation procedures when the remote control
can't be used.
• Intermittent operation of fan at low speed.
•
The fan is switched to low(Cooling), med(Heating) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The louver can be set at the desired posi-
tion or swing up and down automatically.
•
The function will be operated while in any
operation mode with selecting the function.
• The function is to be stopped while it is
operating with selecting the function.
PLASMA
Hot-start Control (Heating)

- 4 -
• If power is on, it will operate to chage capacitor on controller and power relay will operate after about
10sec.
• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,
target freq., owing to CT.
• It will be changed the drive voltage of comp. according to operating frequency.
• It is only operated in the heating operation mode except defrosting operation.
• High speed/Low speed
Outdoor Unit
Power relay control
Comp. Freq. control
Overheatng. Protection(Power module)
Freq. speed control(up/down speed)
V/F control
Total current control (over current protection)
DC peak current control
4 way valve control
Outdoor fan motor control
Discharge pipe temp. control
Overpressure protection

- 5 -
Remote Controller
JET COOL
Healthy Dehumidification Operation Mode. ( )
Operation Mode Selection
(Cooling
model only) (Heating
model only)
Cooling Operation Mode.( ) Heating Operation Mode.( ) Auto Operation Mode.( )
Sleep Operation
Fan Operation Mode
Room, Temperature Display
Setting the Time or Timer
Airflow Direction Control
Operation ON/OFF
Temperature Setting
TEMPERATURE LOWHIGH
Timer Selection
ON OFF
Timer Setting
SET
Timer Cancel
CANCEL
Reset
Fan Speed Selection
(Low) (Med) (High) (CHAOS)
: (High: 39°C LOW : 11°C)
Down to 18°C
Up to 30°C
Cooling
: OFF, ON, OFF ON
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
: Fan Operates without cooling or heating.
Down to 16°C
Up to 30°C
Heating

- 6 -
Product Specifications
AMNN076L/M/NQA0 AMNN096L/M/NQA0 AMNN126L/M/NRA0 AMNN186L/M/NTA0
A3-N216FA0/A2-N186FA0
Model
Item
Cooling Capacitor (Indoor) Btu/h
W
Max. Cooling Capacitor (Outdoor)
Btu/h
W
Heating Capacitor (Indoor) Btu/h
W
Max. Heating Capacitor (Outdoor) Btu/h
W
Moisture Removal l/h
Power Supply Ø, V, Hz
Air Circulation Indoor, Max CMM
Outdoor, Max
Indoor, High
Noise Level (1m) Indoor, Med dB(A)±1
Indoor, Low
Outdoor, Max
Input Cooling W
Heating
Running Current Cooling A
Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
Outdoor (W*D*H)
Net Weight Indoor Kg
Outdoor
Refrigerant R-410A g
Airflow Direction Control(Up & Down)
Remocon Type
Service Valve Luquid inch(mm)
Gas
Sleeping Operation
Connection Cable
7,000 9,000 12,000 18,000
2,051 2,637 3,517 5,274
23,400
6,856
8,000 10,000 13,000 19,000
2,344 2,930 3,809 5,567
25,200
7,384
1.0 1.2 1.7 2.0
1, 220-240, 50
6.5 7.0 9.5 13
56
35 37 40 43
33 34 36 40
30 31 32 37
54
880~2,660
1,210~2,360
4.6~12.1
6.1~11.1
5.3 8.4 14.4 22
68
824 x155 x 260 824 x155 x 260 900 x 156 x 285 1090 x 172 x 314
870 x 320 x 655
77 812
64
1600(at 7.5m)
OO OO
L.C.D Wireless
1/4"(6.35)
3/8"(9.52) 3/8"(9.52) 1/2"(12.7) 1/2"(12.7)
O
O
Indoor
Outdoor

- 7 -
AMNN076L/M/NQA0 AMNN096L/M/NQA0 AMNN126L/M/NRA0 AMNN186L/M/NTA0 AMNN246L/M/NTA0
A4-N306FA0
Model
Item
Cooling Capacitor (Indoor) Btu/h
W
Max. Cooling Capacitor (Outdoor) Btu/h
W
Heating Capacitor (Indoor) Btu/h
W
Max. Heating Capacitor (Outdoor) Btu/h
W
Moisture Removal l/h
Power Supply Ø, V, Hz
Air Circulation Indoor, Max CMM
Outdoor, Max
Indoor, High
Noise Level (1m) Indoor, Med dB(A)±1
Indoor, Low
Outdoor, Max
Input Cooling W
Heating
Running Current Cooling A
Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
Outdoor (W*D*H)
Net Weight Indoor Kg
Outdoor
Refrigerant R-410A g
Airflow Direction Control(Up & Down)
Remocon Type
Service Valve Luquid inch(mm)
Gas
Sleeping Operation
Connection Cable
7,000 9,000 12,000 18,000 23,000
2,051 2,637 3,517 5,274 6,739
31,000
9,083
8,000 10,000 13,800 19,000 26,000
2,344 2,930 4,044 5,567 7,618
34,000
9,962
1.0 1.2 1.7 2.0 2.5
1, 220-240, 50
6.5 7.0 9.5 13 14
60
35 37 40 43 47
33 34 36 40 44
30 31 32 37 40
58
1,430~3,800
1,950~3,910
7.0~19.5
9.3~20.0
5.3 8.4 14.4 22 29
68
824 x 155 x 260 824 x 155 x 260 900 x 156 x 285 1090 x 172 x 314 1090 x 172 x 314
870 x 320 x 800
7781212
75
2,000(at 7.5m)
OOOOO
L.C.D Wireless
1/4"(6.35)
3/8"(9.52) 3/8"(9.52) 1/2"(12.7) 1/2"(12.7) 1/2"(12.7)
O
O
Indoor
Outdoor

- 8 -
AMNN096APA0 AMNN126APA0 AMNN126TEA0 AMNN186TEA0 AMNN186VBA0
A3-N216FA0/A2-N186FA0
Model
Item
Cooling Capacitor (Indoor) Btu/h
W
Max. Cooling Capacitor (Outdoor) Btu/h
W
Heating Capacitor (Indoor) Btu/h
W
Max. Heating Capacitor (Outdoor) Btu/h
W
Moisture Removal l/h
Power Supply Ø, V, Hz
Air Circulation Indoor, Max CMM
Outdoor, Max
Indoor, High
Noise Level (1m) Indoor, Med dB(A)±1
Indoor, Low
Outdoor, Max
Input Cooling W
Heating
Running Current Cooling A
Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
Outdoor (W*D*H)
Net Weight Indoor Kg
Outdoor
Refrigerant R-410A g
Airflow Direction Control(Up & Down)
Remocon Type
Service Valve Luquid inch(mm)
Gas
Sleeping Operation
Connection Cable
9,000 12,000 12,000 18,000 18,000
2,638 3,517 3,517 5,275 5,275
23,400
6,856
10,000 13,800 13,800 19,000 19,000
2,931 4,044 4,044 5,567 5,567
25,200
7,384
1.0 1.2 1.5 3.3 2.5
1, 220-240, 50
7.0 8.3 9.25 13.5 14
56
39 41 41 47 49
35 38 39 45 47
33 36 37 43 45
54
880~2,660
1,210~2,360
4.6~12.1
6.1~11.1
24 24 18.3 25 -
64
570 x 137 x 568 570 x 137 x 568 570 x 570 x 269 570 x 570 x 269 1,200 x 205 x 615
870 x 320 x 655
9 9 19 19 30
64
1,600
OOOOO
L.C.D Wireless
1/4"(6.35)
3/8"(9.52) 1/2"(12.7) 1/2"(12.7) 1/2"(12.7) 1/2"(12.7)
O
O
Indoor
Outdoor

- 9 -
AMNN096APA0 AMNN126APA0 AMNN126TEA0 AMNN186TEA0 AMNN186VBA0
A4-N306FA0
Model
Item
Cooling Capacitor (Indoor) Btu/h
W
Max. Cooling Capacitor (Outdoor) Btu/h
W
Heating Capacitor (Indoor) Btu/h
W
Max. Heating Capacitor (Outdoor) Btu/h
W
Moisture Removal l/h
Power Supply Ø, V, Hz
Air Circulation Indoor, Max CMM
Outdoor, Max
Indoor, High
Noise Level (1m) Indoor, Med dB(A)±1
Indoor, Low
Outdoor, Max
Input Cooling W
Heating
Running Current Cooling A
Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
Outdoor (W*D*H)
Net Weight Indoor Kg
Outdoor
Refrigerant R-410A g
Airflow Direction Control(Up & Down)
Remocon Type
Service Valve Luquid inch(mm)
Gas
Sleeping Operation
Connection Cable
9,000 12,000 12,000 18,000 18,000
2,638 3,517 3,517 5,275 5,275
23,400
6,856
10,000 13,800 13,800 19,000 19,000
2,931 4,044 4,044 5,567 5,567
25,200
7,384
1.0 1.2 1.5 3.3 2.5
1, 220-240, 50
7.0 8.3 9.25 13.5 14
60
39 41 41 47 49
35 38 39 45 47
33 36 37 43 45
58
1,430~3,800
1,950~3,910
7.0~19.5
9.3~20.0
24 24 18.3 25 -
64
570 x 137 x 568 570 x 137 x 568 570 x 570 x 269 570 x 570 x 269 1,200 x 205 x 615
870 x 320 x 655
9 9 19 19 30
64
2,000(at 7.5m)
OOOOO
L.C.D Wireless
1/4"(6.35)
3/8"(9.52) 1/2"(12.7) 1/2"(12.7) 1/2"(12.7) 1/2"(12.7)
O
O
Indoor
Outdoor

1. Indoor Unit
•Room Type Indoor Unit
- 10 -
Dimensions
Installation plate
D
H
W
W mm 824 900 1,090
H mm 260 285 314
D mm 155 156 172
7K, 9K Btu Series 12K Btu Series 18K, 24K Btu Series
MODEL
DIM

- 11 -
•Art Cool Type Indoor Unit
Pipe Hole Fix Hole
Hanger Hole
H
WD
MODEL
DIM Unit
W mm 570
H mm 568
D mm 137
INDOOR UNIT

- 12 -
•Convertible Type Indoor Unit
250mm
36mm
36mm 1076mm
1200mm
205mm
615mm
392mm
265mm
468mm
R
63mm
38mm
175mm
(Installation Plate)
(Rear Side)

- 13 -
•Cassette Type Indoor Unit
269
67055
570
269
190.5
160
52
90 90
120.4 30 521
670
570
450
40
110 110
670
670
CLOSE OPEN OPEN CLOSE

- 14 -
W
D
L1
L2
L4 L3
H
L7L5L6
L10
L9
L9
L8
L10
W mm 870 870
H mm 655 800
D mm 320 320
L1 mm 370 370
L2 mm 25 25
L3 mm 630 775
L4 mm 25 25
L5 mm 546 546
L6 mm 160 160
L7 mm 160 160
L8 mm 53 53
L9 mm 50 50
L10 mm 40 40
A2UN186FA0/A3UN216FA0 A4UN306FA0
MODEL
DIM
2. Outdoor Unit

- 15 -
Wiring Diagram
1. Room Type Indoor Unit 2. Art Cool Type Indoor Unit
3. Cassette Type Indoor Unit 4. Convertible Type Indoor Unit
INDOOR WIRING DIAGRAM
CONNECT
PCB ASSY
DISPLAY
PCB
ASSY
MAIN PCB ASSY
CN-GND
CN-TH1CN-UDCN-LR1CN-LR2
CN-MOTOR2
CN-POWER
CN-D1
FUSE
250V 3.15A
CN-D2
BK
WH
YL
RD
FAN
MOTOR
STEP
MOTOR
STEP
MOTOR
STEP
MOTOR
STEP
MOTOR
STEP
MOTOR
TO OUTDOOR UNIT
BR
BL
GN/YL
RD
1(L) 2(N)
3854A20219A
34
Z
CAPACITOR
BR YL CN-FAN
CN-POWER
RY-L
RY-M
RY-H
CN-TRANS
CN-UP/DOWN 1,2
TRANS-
FORMER
THERMISTOR
CN-TH
MAIN PCB
ASSY
OR
RD
RDBLBR
BL
BK
DOOR S/W 1,2
FUSE T3.15A
MOTOR
GN/YL
GN/YL
TO OUTDOOR UNIT
1(L)2(N) 4
3854A20220A
INDOOR WIRING DIAGRAM
CN-DISP
DISPLAY PCB
ASSY
TERMINAL
BLOCK
STEP
MOTOR
STEP
MOTOR
56
INDOOR WIRING DIAGRAM
INDOOR
MOTOR DRAIN
PUMP STEP MOTOR
ROOM
SENSOR
PIPE
SENSOR
FLOAT S/W
CN -DISP
DISPLAY PCB
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20221A
BR
YL
BK
OR
BL
BL
BR
RD
GN/YL
BL
3(L) 4(N) 5 6 7
FUSE T3.15A
FUSE
250V 5A
3854A20135F

BR
Comp.
U UN
P
IPM
W
W
4WAY
V
V
RD
RD
YL
RD
RD
RD
RD
RD
BR
CT
BR
BR
BL
BL
WH
BK
BK
BK
BK BK
BK
BK
YL
H/P SWITCH
L/P SWITCH
OPTION
BRIDGE
DIODE
BRIDGE
DIODE
CAPACITOR
(400V,165µF)
400V,2500µF(DC LINK)
CAPACITOR
S.V
POWER
RELAY
BR
33331(L) 2(N) 1(L) 2(N) 1(L) 2(N)
BR BR
BR
BR
BL
10 24
GN/YL
GN/YL
BL BL
BL
BL
BL
GN/YL GN/YL
WH
WH
WH
BL WH
WH
WH
(WH)
(RD)
(WH)
(RD)
GND
YL
YL
BR
BK
BK
NL
BK
WH
RD
BL
WH
BK
BL
CN-
GATE1 CN- GATE2 CN- IPM
CN-
IPM
CN-
GATE1
D-LEV
CN-DATA
CN-POWER CN-PWR
RY-START
250V, 3.15A
FUSE
RY- PWR
CN-AC
REACTOR
POWER-OUT
FUSE
250V,25A
POWER-IN
A-LEV
B-LEV
C-LEV
(8PIN)
CN-LEV4CN-LEV1CN-LEV2CN-LEV3CN-TH6CN-TH5
CN-TH4
CN-TH3
CN-TH2
CN-TH1
COND
SENSOR
AIR
SENSOR
A-PIPE
SENSOR
B-PIPE
SENSOR
C-PIPE
SENSOR
D-PIPE
SENSOR
SUCTION
SENSOR
DISCHARGE
SENSOR
(7PIN) (9PIN)
CN-
GATE2
MAIN
PCB
CN-FAN
RY-LOW RY-HIGH
CN-DC
CN-4WAY
CN-SV(H)CN-SV
WH
WH
WH
OPTION
TO INDOOR UNIT
MAIN POWER
1Ø, 220~240V, 50Hz
3854AP7050Z
DCBA
NOISE
FILTER
S.V
MOTOR
CAPACITOR
BL
BR YL
YL BR BL BK OR
BK OR
- 16 -
4. Outdoor Unit

- 17 -
Refrigeration Cycle Diagram
ex)
LEV
Solenoid valve
Capillary tube
Cooling & Deice
Heating
Indoor Unit Outdoor Unit
UNIT-D UNIT-C UNIT-B UNIT-A
A-LEV
B-LEV
C-LEV
D-LEV
Gas side
Service Valve
Indoor
temperature
sensor
Heat
Exchanger
Heating
sensor
Solenoid
Valve
D-gas pipe sensor
C-gas pipe sensor
B-gas pipe sensor
A-gas pipe sensor
A-liquid pipe sensor
B-liquid pipe sensor C-liquid pipe sensor D-liquid pipe sensor
Liquid side
Service Valve
Strainer
Indoor Unit Outdoor Unit
UNIT-B UNIT-A
A-LEV
B-LEV
Gas side
Service Valve
Indoor
temperature
sensor
Comp Heat
Exchanger
Heating
sensor
4-WAY VALVE
Discharge
pipe
sensor
Refrigerant flow
B-gas pipe sensor
A-gas pipe sensor
A-liquid pipe sensor
B-liquid pipe sensor
Liquid side
Service Valve
Strainer
Indoor Unit Outdoor Unit
UNIT-C UNIT-B UNIT-A
A-LEV
B-LEV
C-LEV
Gas side
Service Valve
Indoor
temperature
sensor
Comp Heat
Exchanger
Heating
sensor
4-WAY VALVE
Discharge
pipe
sensor
C-gas pipe sensor
Refrigerant flow
B-gas pipe sensor
A-gas pipe sensor
A-liquid pipe sensor
B-liquid pipe sensor C-liquid pipe sensor
Liquid side
Service Valve
Strainer
Comp
Section pipe
sensor
Discharge
pipe
sensor
1. A2-N186FA0
2. A3-N216FA0
3. A4-N306FA0

-18-
Operation Details
1. Room/Art Cool Type Indoor Unit
(1) The Function of main control
•DISPLAY
Operation Indicator
•On while in appliance operation, off while in appliance pause
•Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)
Sleep Timer Indicator
•On while in sleep timer mode, off when sleep timer cancel or appliance operation pause
Timer Indicator
•On while in timer mode (on/off), off when timer mode is completed or canceled
Defrost Indicator
•Off except when hot start during heating mode operation or while in defrost control
■Cooling Mode Operation
•When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.
•When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp ➲ Setting Temp+0.5°C
Compressor OFF Temp ➲Setting Temp-0.5°C
•While in compressor running, operating with the airflow speed set by the remote control. While in compressor
not running, operating with the low airflow speed regardless of the setting.
■Soft Dry Operation Mode
•When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C ≤Intake Air Temp ➲ 25°C
24°C ≤Intake Intake Air Temp<26°C➲ Intake Air Temp-1°C
18°C ≤Intake Intake Air Temp<24°C➲ Intake Air Temp-0.5°C
Intake Air Temp<18°C➲ 18°C
•While in compressor off, the indoor fan repeats low airflow speed and pause.
•While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification
operation and 4-min compressor off repeat.
Compressor ON Temp. ➲Setting Temp+0.5°C
Compressor OFF Temp. ➲Setting Temp-0.5°C
•In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
■Heating Mode Operation
•When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.
Compressor ON Temp. ➲Setting Temp.
Compressor OFF Temp. ➲Setting Temp.+3°C
•While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26°C, when above 28°C , it
operates with the low or setting airflow speed.

-19-
•While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , it
operates with the low airflow speed.
•If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the
outdoor fan is turned on/off according to the indoor pipe temp.
•While in defrost control, both of the indoor and outdoor fans are turned off.
■Defrost Control
•Defrost operation is controlled by timer and sensing temperature of outdoor pipe.
•The first defrost starts only when the outdoor pipe temperature falls below -5°C after 40 minutes passed from
starting of heating operation and more than 10 minutes operation of compressor.
•Defrost ends after 12 minutes passed from starting of defrost operation or after the outdoor fan operates with-
in max. 2 minutes 30 seconds when the outdoor pipe temperature rises over 12°C even it before 12 minutes.
•The second defrost starts only when the outdoor pipe temperature falls below -5°C after 40 minutes passed
from ending of the first defrost and more than 10 minutes operation of compressor.
■Fuzzy Operation
•When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.
•When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C ≤Inatake Air Temp ➲Fuzzy Operation for Cooling
21°C ≤Inatake Air Temp<24°C➲Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C ➲Fuzzy Operation for Heating
•If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10
sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor
is turned on.
Compressor ON Temp ➲Setting Temp +0.5°C
Compressor OFF Temp ➲Setting Temp –0.5°C
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C≤Intake Air Temp ➲25°C
24°C≤Intake Air Temp<26°C ➲Intake Air Temp –1°C
22°C≤Intake Air Temp<24°C ➲Intake Air Temp –0.5°C
18°C≤Intake Air Temp<22°C ➲Intake Air Temp
Intake Air Temp<18°C ➲18°C
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem-
perature.

-20-
2) Fuzzy Operation for Dehumidification
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor
is turned on.
Compressor ON Temp ➲Setting Temp + 0.5°C
Compressor OFF Temp ➲Setting Temp –0.5°C
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
26°C ≤Intake Air Temp ➲25°C
24°C ≤Intake Air Temp<26°C ➲Intake Air Temp –1°C
22°C ≤Intake Air Temp<24°C ➲ Intake Air Temp –0.5°C
18°C ≤Intake Air Temp<22°C ➲Intake Air Temp
Intake Air Temp<18°C ➲18°C
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in
dehumidification operation.
3) Fuzzy Operation for Heating
•According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp ➲Setting Temp
Compressor OFF Temp ➲Setting Temp + 3°C
•At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temp at that time.
20°C≤Intake Air Temp ➲Intake Air Temp + 0.5°C
Intake Air Temp<20°C ➲20°C
•When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
•While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to the
intake air temperature and the setting temperature.
■ Airflow Speed Selection
•The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow
speed selection key on the remote control.
■On-Timer Operation
•When the set time is reached after the time is input by the remote control, the appliance starts to operate.
•The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
•If the appliance is operating at the time set by the timer, the operation continues.
While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
■ Off-Timer Operation
•When the set time is reached after the time is input by the remote control, the appliance stops operating.
•The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
•If the appliance is on pause at the time set by the timer, the pause continues.