LG LS-J0762YL, LS-J0762YLAC, LS-L1262YL, LS-L1262YLAC, LS-Q096BUL Service Manual

MODEL : LS-J0762YL(AC)

LS-L1262YL(AC)
LS-Q096BUL(DC)
LS-R126CUL(DC)
LS-L12632L(AC)

Room Air Conditioner

SERVICE MANUAL

CAUTION

-BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

-ONLY FOR AUTHORIZED SERVICE PERSONNEL.

WEBSITE http://biz.LGservice.com
E-MAIL http://www.LGEservice.com/techsup.html

Contents

Functions

.................................................................................................................................

3

Product Specification (Cooling & Heating)

...........................................................................

6

Dimensions

..............................................................................................................................

7

Refrigeration Cycle Diagram

..................................................................................................

9

Wiring Diagram

......................................................................................................................

10

Operation Details

..................................................................................................................

11

Installation

.............................................................................................................................

25

Operation

...............................................................................................................................

38

Disassembly of the parts (Indoor Unit)

...............................................................................

40

2-way, 3-way Valve

.................................................................................................................

43

Cycle Troubleshooting Guide

...............................................................................................

50

Self-diagnosis function

.........................................................................................................

51

Electronic Parts Troubleshooting Guide

.............................................................................

53

Electronic Control Device

.....................................................................................................

63

Schematic Diagram

...............................................................................................................

66

Exploded View and Replacement Parts List

.......................................................................

69

-2-

Functions

• Room temperature sensor. (Thermistor)

• Pipe temperature sensor. (Thermistor)

• Maintain the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 sec at the starting.

• Restarting is for approx. 2 minutes.

• Super High, High, Med, Low

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Preheat Mode (for Heating Model)

--- Lights up in Plasma Air Clean Mode

• Intermittent Operation of fan at low speed or off.

• The fan is switched to low(Cooling), low(Heating) speed.

• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation

•

The fan speed is automatically switched from high to low speed.

• The louver can be set at the desired position or swing
up and down automatically.

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting the 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 defrosting.

• The indoor fan stops until the
evaporator pipe temperature will be
reached at 34°C.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

PLASMA

-3-

Defrost(Deice) control (Heating)

Hot-start Control (Heating)

• 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

-4-

• If power is on, it will operate to chage capacitor on controller and power relay will operate after about
2~5sec.

• If outdoor temp. is below 0°C, preheater is operating for 1~5min.

• At the initial, It will be operated compressor after 1min. for preheating.

• The active power filter is designed to correct power factor(cos θ) and to regulate DC link voltage.

• It will be operated PFC circuit when the compressor freq. is over 30Hz and wattage is over 450 watt.

• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,
heat-sink temp., target freq., owing to CT.

• When the temp. of power module increases to 85°C, controller decreases Freq. of Comp.

• It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.

• 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

- Although fan motor speed is middle, it will change high speed in case of below AC193V, over 45°C of

outdoor temp., and over fc, fh of comp. Freq.

• Middle speed

- Nomal mode

• Low speed

- Although fan motor speed is middle, it will change Low speed in case of over AC 270V, over 21°C

(Heating Mode) of outdoor temp. below 24°C (Cooling Mode) of outdoor temp.

Outdoor Unit

Power relay control

Stand by control at low temp.

Active power filter control(PSC)

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

-5-

Healthy Dehumidification Operation Mode.

( )

Remote Control

Operation ON/OFF

Reset

Operation Mode Selection

Temperature Setting

Timer Selection

Timer Setting

JET COOL

Timer Cancel

Sleep Operation

Airflow Direction Control

(Cooling

model only)

(Heating

model only)

TEMPERATURE

LOW HIGH

Cooling Operation Mode.( )

Heating Operation Mode.( )

Auto Operation Mode.( )

Horizontal Airflow Direction Control Button(Optional)

Room, Temperature Display

Setting the Time or Timer

PLASMA(Optional)

ON OFF

SET

PLASMA

CANCEL

Fan Speed Selection

(Low) (Med) (High) (CHAOS)

Power Save Cooling Button

: (High:39°C Low:11°C)

: OFF, ON, OFF ON

: Cancel Sleep Mode, Timer ON or Timer OFF

: 1, 2, 3, 4, 5, 6, 7, Off Timer

: Used to set Preheat mode.

Cooling

Down to 18°C
Up to 30°C

Heating

Down to 16°C
Up to 30°C

7K Series(AC) 12K Series(AC) 9K Series(DC) 12K Series(DC)

at 230V

7,000(4,700-8,300) 12,000(6,500-13,200) 9,000(3,700-9,700) 12,000(3,750-13,700)

9,000(5,000-10,000) 14,400(6,500-15,900) 11,250(1,750-12,500) 14,400(2,450-15,900)

1

1Ø, 220-240V, 50Hz

5.6 9 7.2 9
25 31 31 31
33 36 36 39
48 49 49 49

770 1,330 879 1,050
920 1,580 1,125 1,440

3.5 5.9 4 4.5

4.1 7 5 6.5

7.5 8.7 8.4 14.4

35.8 29 29 29
802*262*165 888*287*170 824*260*165 900*285*156
575*525*260 770*540*245 770*540*245 770*540*245

7 9.5 7 9.5

27 38 34 38

580(R22) 950(R22) 620(R410A) 950(R410A)

Up & Down Up & Down Up & Down

Up & Down, Right & Left

L.C.D Wireless

1/4(6.35)

3/8(9.52) 1/2(12.7) 3/8(9.52) 3/8(9.52)

O

O
1 1.5 1 1.5
1 1.5 1 1.5

Cooling Capacity Btu/h
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz

Air Circulation

Indoor

m

3

/min

Outdoor

Noise Level

Indoor

dB (A)±3

Outdoor

Input

Cooling

W

Heating

Running

Cooling

A

Current

Heating

Motor Output

Indoor

W

Outdoor

Dimensions

Indoor

mm

(W x H x D)

Outdoor

Net. Weight

Indoor

kg

Outdoor
Refrigerant (R22) g
Airflow Direction Control (Up & Down)
Remocon Type

Service Valve

Liquid

inch(mm)

Gas
Sleeping Operation
Drain Hose
Connecting Cable mm

2

Power Cord mm

2

-6-

Product Specifications (Cooling & Heating)

Model Name

Item Unit

-7-

Dimensions

(1) Indoor Unit

Tubing hole cover

D

H

W

Installation plate

Tubing hole cover

Installation plate

Right rear piping

Left rear piping

ø70mm

ø70mm

50mm

20mm

20mm

80mm

ø70mm

A

A

A

A

Center

Right rear pipingLeft rear piping

Center

ø70mm

MODEL

DIM Unit

W mm 820 888 824 900

H mm 262 287 260 285
D mm 165 170 165 156

7k Btu Series(AC) 12k Btu Series(AC) 9k Btu Series(DC) 12k Btu Series(DC)

(7k, 12k)

( 7k) ( 12k )

( 7k ) ( 12k )

-8-

(2) Outdoor Unit

W

L2

L3

L1

D

H

L4

L5

Gas side

(3-way valve)

Liquid side

(2-way valve)

MODEL

7K Btu Series(AC) 12K Btu Series(AC) 9K Btu Series(DC) 12K Btu Series(DC)

DIM unit

W mm 564 770 770 770

H mm 525 540 540 540

D mm 265 245 245 245
L1 mm 294 287 287 287
L2 mm 66 64 64 64
L3 mm 374 518 518 518
L4 mm 17 10 10 10
L5 mm 270 100 100 100

Pipe size(Diameter:Ø)

MAX. Max

MODEL Piping length Elevation

Gas(inch) Liquid(inch)

(m) (m)

7k Btu Series(AC) 3/8" 1/4" 15 7
12k Btu Series(AC) 1/2" 1/4" 15 7
9k Btu Series(AC) 3/8" 1/4" 15 7
12k Btu Series(AC) 3/8" 1/4" 15 7

Refrigeration Cycle Diagram

-9-

INDOOR UNIT OUTDOOR UNIT

HEAT
EXCHANGE
(EVAPORATOR)

HEAT
EXCHANGE
(CONDENSER)

COMPRESSOR

ACCUMU
LATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

2-WAY VALVE

CAPILLARY TUBE

COOLING
HEATING

REVERSING
VALVE
(Heating Model Only)

Wiring Diagram

-10-

(1) Indoor Unit

Model: LS-_YL/UL Series Model: LS-_NM/NN Series

Model: LS-L12632L

(2) Outdoor Unit

Model: LS-L12632L

CN-COIL2

CN-COIL1

REACTOR

CN-COMP CN-FAN

WCN-NOISE1

TERMINAL

BLOCK

CN-4WAY

RY­4WAY

BR
BL

GN/YL

RD

RD BL BR

BR
BL

FUSE

AC 250V/15A

GN/YL

RD

4WAY
VALVE

1(L

)

2(N

)

3

TO
INDOOR
UNIT

MAIN PWB ASM

OUTDOOR WIRING DIAGRAM

3854A20157L

YL

YL

COMP-

RESSOR

YL

W(C

)

V(S

)

U(R

)

BL RD

YL BL RD

SSR

COMPRESSOR

THERMISTOR

HEAT SINK

THERMISTOR

INTAKE/PIPE

THERMISTOR

CN-TH2 CN-TH1

WH

BK

BK

BK

GR

RD BL YL

FAN

MOTOR

CN-COIL2

CN-COIL1

REACTOR

CN-COMP CN-FAN

WCN-NOISE1

TERMINAL

BLOCK

CN-4WAY

RY­4WAY

BR
BL

GN/YL

RD

RD BL BR

BR
BL

FUSE

AC 250V/15A

GN/YL

RD

4WAY

VALVE

1(L

)

2(N

)

3

TO
INDOOR
UNIT

MAIN PWB ASM

OUTDOOR WIRING DIAGRAM

3854A20051V

YL

YL

COMP-

RESSOR

YL

W(C

)

V(R

)

U(S

)

BL RD

YL BL RD

SSR

COMPRESSOR

THERMISTOR

HEAT SINK

THERMISTOR

INTAKE/PIPE

THERMISTOR

CN-TH2 CN-TH1

WH

BK

BK

BK

GR

YL BL RD

FAN

MOTOR

POWER

BR

BRBLRD

GN/YL

BL

1(L) 2(N)

3

MOTOR

CN-MOTOR

CN-TAB1

CN-AC/DC

CN-AC/DC

STEP

MOTOR

STEP

MOTOR

H.V.

ASM

RD

AIR
CLEAN

(

PLASMA

)

SAFETY S/W1

SAFETY S/W2

BK

BK
BK

BK
BK

CN-U/D

CN-L/R

CN-DISP1

DISPLAY PWB ASM

INDOOR WIRING DIAGRAM

3854A20142G

SW(FORCE)

T/BLOCK

TO OUTDOOR UNIT

SSR

AC PWB ASM DC PWB ASM

OR
BK

BR

4

RY-POWER

FUSE AC
250V T2A

3

YL

SH-CAPA

GN/YL

CN-DISP2

BR

BL

CN-TH

THERMISTOR

POWER

BR

BRBLRD

GN/YL

BL

1(L) 2(N)

3

MOTOR

CN-MOTOR

CN-TAB1

CN-AC/DC

CN-AC/DC

STEP

MOTOR

STEP

MOTOR

H.V.

ASM

RD

AIR
CLEAN

(

PLASMA

)

SAFETY S/W1

SAFETY S/W2

BK

BK
BK

BK
BK

CN-U/D

CN-L/R

CN-DISP1

DISPLAY PWB ASM

INDOOR WIRING DIAGRAM

3854A20142V

SW(FORCE)

T/BLOCK

TO OUTDOOR UNIT

SSR

AC PWB ASM DC PWB ASM

OR
BK

BR

4

RY-POWER

FUSE AC
250V T2A

3

YL

SH-CAPA

GN/YL

BR

BL

CN-TH

THERMISTOR

POWER

BR

BRBLRD

GN/YL

BL

1(L) 2(N)

3

MOTOR

CN-MOTOR

CN-TAB1

CN-AC/DC

CN-AC/DC

STEP

MOTOR

STEP

MOTOR

H.V.
ASM

RD

AIR
CLEAN

(

PLASMA

)

SAFETY S/W1

BK

BK
BK

CN-U/D

CN-L/R

CN-DISP1

DISPLAY PWB ASM

INDOOR WIRING DIAGRAM

3854A20305B

SW(FORCE)

T/BLOCK

TO OUTDOOR UNIT

SSR

AC PWB ASM DC PWB ASM

OR
BK

BR

4

RY-POWER

FUSE AC
250V T2A

3

YL

SH-CAPA

GN/YL

CN-DISP2

BR

BL

CN-TH

THERMISTOR

Operation Details

1. LED display of indoor unit

■ LS-_YL/UL Series

■ LS-_NM/NN Series

-11-

Operation

indicator

Shape of

display

Setting

temp.

Standard Too hot Hot Cold Too cold

Jet

(Cool, Heat)

Test

operation

Comfortable

A.I operation mode

Cooling
heating

dehumidifi-

cation

Energy save

in cooling

mode

Operation Indicator

Sleep Timer Indicator

Timer Indicator

Preheat Indicator

Setting Temp.

• On while in appliance operation, off while in appliance pause.

• Blinking(3sec off/0.5sec on) according to Error Code as long as the system mal-

functions.

• On while in sleep timer mode, off when sleep timer cancel or appliance operation
pause.

• On while in timer mode(on/off), off when timer mode is completed or canceled.

• Off except when hot start during heating mode operation or while in defrost control.

• Cooling/heating/dehumidification mode : setting temperature from remote control

• Fuzzy operation mode : fuzzy key data(5sec on) ➔ AI

Operation Indicator

Power Saving Indicator

Timer Indicator

Preheat 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)

• On while in power saving cold mode, off when power saving cold cancel.

• On while in timer mode(on/off) and sleep timer mode (on), off when timer mode is

completed or canceled.

• Off except when hot start during heating mode operation or while in defrost control.

■ How to operate the power display (LS-_YL/UL Series)

• It must be displayed the power level that will be operating frequency of compressor.

• It indicates power levels that compressor operating frequency is controlled to depend on indoor and outdoor

conditions.

• It is displayed as below.

❐ Heat mode operation

- Power level 1: below Step 2 of COMP. operating frequency

- Power level 2: below Step 4 of COMP. operating frequency

- Power level 3: Equal Step 5 of COMP. operating frequency

- Power level 4: below Step 7 of COMP. operating frequency

❐ Operation mode except heat mode operation

- Power level 1: below Step 2 of COMP. operating frequency

- Power level 2: below Step 4 of COMP. operating frequency

- Power level 3: Equal Step 5 of COMP. operating frequency

- Power level 4: below Step 7 of COMP. operating frequency

-12-

Power Level 1

Power Level 2

Power Level 3

Power Level 4

-13-

2. Protection of the evaporator pipe from frosting

• If the indoor pipe temperaure is below 0°C in 7 min. after the compressor operates without pause while in
cooling cycle operation mode,
➔ compressor, outdoor fan are turned off.

• When indoor pipe temp. is 7°C or higher after 2 min pause of compressor
➔ compressor, outdoor fan is turned on according to the condition of the room temperature.

3. Protection of the indoor fan from droplet formation (Enclosure
sweat and condensed disposal test)

• Control condition : The system operates standard operation without this condition as follows.

Setting temperature <25°C
Indoor fan speed ≤ low speed
Outdoor temperature < 30°C

• Control method

In operation for 5~20 minutes in , , conditions, return to the previous COMP STEP after operation for
5~40 minutes at the COMP STEP 3.

Comp. free

Comp. Step 4
Comp. Step 2

Comp. off

0˚C

3˚C

6˚C

7˚C

Indoor pipe
temp.

-14-

4. Cooling mode operation

• Operating frequency of compressor depend on the difference of the temperature.

(= intake air Temp.- Compressor off Temp.

• Compressor off temp.= setting temp. -0.5°C

on temp. = setting temp. +0.5°C

• If compressor operates at some operating frequency, the operating frequency of compressor cannot be

changed within 30 seconds.

• Condition of compressor turned off

- When intake air temperature stay at the temperature between setting temp.

-

0.5°C and setting temp.

-

1.0°C for 3 minutes continuously.

- When intake air temperature reaches below the temperature of setting temp.

-

1.0°C.

• Compressor 2 minutes delay

- The compressor can restart minimum 2 minutes later after compressor off.

Temp. differences Comp. Operating frequency

over 3.0°C Step 7
over 2.5°C Step 6

2.0~2.49°C Step 5

1.5~1.99°C Step 4

1.0~1.49°C Step 3

0.5~0.99°C Step 2

0.0~0.49°C Step 1

[The operating freq. step of comp.]

[The targeting operating freq. of comp. each model]

Model

7K Series(AC) 35 41 45 56 64 68 78

12K Series(AC) 30 40 45 55 61 67 72

9K Series(DC) 15 22 32 40 51 54 58

12K Series(DC) 15 28 40 53 66 71 76

Comp. Operating frequency

Step 1 Step 2 Step 3 Step 4 Step 5(Fr) Step 6 Step 7

-15-

5. Healthy Dehumidification mode operation

• When the dehumidification operation is set by the remote controller the intake air temperature is detected and
the setting temp. is automatically set according to the intake air temperature.

• When intake air temp reaches above the temp of setting +1.0°C, condition of compressor same as cooling
mode operation.

• When intake air temperature reaches bolow the temp of setting –1.0°C, compressor operate step1~step3 and
indoor fan speed repeatly operate low or stop.

Intake air Temp.

32°C ≤ intake air temp.

26°C ≤ intake air temp. < 32°C

24°C ≤ intake air temp.< 26°C

18°C < intake air temp. < 24°C

intake air temp. ≤ 18°C

Setting Temp.

25°C
25°C

intake air temp. -1°C

intake air temp. -0.5°C

18°C

-16-

6. Heating mode operation

• Operating frequency of compressor depend on the difference of the temperature
(= compressor off temp. - intake air temp.)

• Compressor off temp. = setting temp.+3.0°C

on temp. = setting temp.

• If compressor operates at some operation frequency, the operating frequency of compressor cannot be
changed within 30 seconds.

• Condition of compressor turned off

- When intake air temperature reaches +3°C above the setting temperature.

• Condition of indoor fan turned off

- While in compressor on:indoor pipe temp. < 30°C

• While in defrost control, between the indoor and outdoor fans are turned off.

• Compressor 2minutes delay

- After compressor off, the compressor can restart minimum 2 minutes later.

Temp. differences

over 3.0°C

2.5~3.0°C

2.0~2.49°C

1.5~1.99°C

1.0~1.49°C

0.5~0.99°C

0.0~0.49°C

Comp. Operating frequency

Step 7
Step 6
Step 5
Step 4
Step 3
Step 2
Step 1

[ The operating freq. step of comp]

[The targeting operating freq. of comp. each model]

Model

7K Series(AC) 35 48 56 68 80 85 90

12K Series(AC) 35 43 55 65 74 80 86

9K Series(DC) 15 25 40 52 63 66 70

12K Series(DC) 15 28 40 53 66 71 76

Comp. Operating frequency

Step 1 Step 2 Step 3 Step 4 Step 5(Fr) Step 6 Step 7

-17-

7. Fuzzy mode operation

• When any of operation mode is not selected like the moment of the power on or when the unit turned off, the
operation mode is selected.

• When determining the operation mode, the compressor, outdoor fan are off and only the indoor fan is operat­ed for 15~20 seconds, then an operation mode is selected according to.

Basis of determining operating mode

Outdoor temp.

over 24°C

21~24°C
18~21°C

below 18°C

Operating Mode

Cooling

Healthy Dehumidification

intake air temp. ≥ 25°C …Dehumidification

intake air temp. < 25°C … Heating

Heating

7.1 Fuzzy operation for cooling

• According to the setting temperature selected by Fuzzy rule, the operating frequency of compressor is deter­mined like cooling mode operation.

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.

• When the Fuzzy key(=setting temp. key) is input after the initial setting temperature is selected, the Fuzzy
key value and intake air temperature at that time are compared to select the setting temperature automatically
according to the fuzzy rule.

• While in Fuzzy operation, the air flow speed of the indoor fan is automatically operated by Fuzzy logic.

at beginning

during opertion

Intake air temp.

over 26°C

18~26°C

below 18°C

18~30°C

below 18°C

over 30°C

Setting temp.

25°C

intake air temp. -0.5°C

18°C

Fuzzy rule
18°C Fuzzy rule
30°C Fuzzy rule

Fan speed

Fuzzy airflow

-18-

7.2 Fuzzy operation for Heating

• According to the setting temperature selected by Fuzzy rule, the operating frequency of compressor is deter­mined like heating mode operation.

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.

• When the Fuzzy key(=setting temp. key) is input after the initial setting temperature is selected, the Fuzzy key
value and 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 operated by Fuzzy logic.

at beginning

during opertion

Intake Air temp.

over 20°C

below -20°C

16~30°C

below 16°C

over 30°C

Setting temp.

intake air temp. +0.5°C

20°C

Fuzzy rule
16°C Fuzzy rule
30°C Fuzzy rule

Fan speed

Fuzzy airflow

7.3 Fuzzy operation for dehumidification

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the
intake air temperature at that time.

• According to the setting temperature selected by Fuzzy rule, the operating frequency of compressor is deter­mined like dehumidefication mode operation.

at beginning

during operation

Intake Air temp.

over 26°C

18~26°C

below 18°C

18~30°C

below 18°C

over 30°C

Setting temp.

25°C

intake air temp. -0.5°C

18°C

Fuzzy rule
18°C Fuzzy rule
30°C Fuzzy rule

Fan speed

Fuzzy airflow

-19-

8. Jet cool mode operation

• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation(cooling, dehumidification, ventilation), the Jet Cool mode is operated.

• In the Jet Cool mode, the indoor fan is operated super-high speed for 30 min. at cooling mode operation.

• In the Jet Cool mode, the room temperature is controlled to the setting temperature, 18°C.

• When the sleep timer mode input while the Jet Cool mode operation, the Jet Cool mode has the priority.

• When the Jet Cool key is input, the upper/lower vane is reset to those of the initial cooling mode and then

operated in order that the air outflow could reach further.

9. Jet heat mode operation

• While in cooling mode or Fuzzy operation, the Jet Heat key cannot be input. When it is input while in the
Heating mode operation (dehumidification), the Jet Heat mode is operated.

• In the Jet Heat mode, the indoor fan is operated super-high speed for 60 min. at Heating mode operation.

• In the Jet Heat mode, the room temperature is controlled to the setting temperature, 30°C.

• When the sleep timer mode input while the Jet Heat mode operation, the Jet Heat mode has the priority.

• When the Jet Heat key is input, the upper/lower vane is reset to those of the initial Jet heating mode and

then operated in order that the air outflow could reach under flow.

10. Swing mode

10.1 Chaos swing mode

• By the Chaos swing key input, the upper/lower vane automatically operates with the Chaos swing or it is fixed
to the desired direction.

CLOSED

Chaos Swing On

Chaos Swing

The first path

Mode 9

Mode 8

Mode 7
Mode 6

Mode 5

Mode 4

Mode 3

Mode 2

Mode 1

OPEN

11.1 Sleep timer operation for cooling cycle

• While in cooling mode operation, 30 min. later since the start of the sleep timer, the setting temperature
increase by 1°C. After another 30min. elapse, it increases by 1°C again.

11.2 Sleep timer operation for heating cycle

• While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature
decrease by 1°C. After another 60min. elapse, it decreases by 1°C again.

-20-

Setting temp. (˚C)

1.0˚C up

1.0˚C up

Cooling ON temp.
(Setting temp. +0.5˚C)

Cooling OFF temp.
(Setting temp. -0.5˚C)

0.5 1 Sleep time (hr

)

Setting temp. (˚C)

Heating ON temp.
(Setting temp)

Heating OFF temp.
(Setting temp. +3.0˚C)

1 2 Sleep time (hr

)

0.5˚C down

1.0˚C down

11. Sleep timer operation

• When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation, the
operation of the appliance stops.

• When the appliance is on pause, the sleep timer mode cannot be input.

12. Auto restarting operation

• When the power is restarted after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.

• Operation mode that is kept on the memory

- State of operation ON/OFF

- Operation mode/setting temp./selected airflow speed

- Sleep timer mode/remaining time of sleep timer

- Chaos Swing

13. Forced operation

• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch
is on the main unit of the appliance to operate the appliance in the standard conditions.

• The operation condition is set according to the outdoor temp. and intake air temperature as follows.

❈ The unit select before operating mode in 3 hours.

14. Trial Operation

• Press the Tact Switch for compulsory operation of the main body for 3 seconds in order to operate in the trial
operation mode.

- Operation mode: Cold

- Indoor pan: Strong wind

- COMP frequency: Step 5

- COMP compulsorily operates for about 18 minutes irrespective of indoor temperature.

-21-

Outdoor temp.

over 24°C

21~24°C
18~21°C

below 18°C

Setting temp.

22°C
23°C
23°C
24°C
24°C

Setting speed of

indoor fan

High speed

Operating Mode

Cooling

Healthy Dehumidification

Intake air temp. ≥ 25°C ➔ Dehumidification

Intake air temp. < 25°C ➔ Heating

Heating

15. Power relay control

• Power relay turns on 1 second later after the power is input to the outdoor unit.

• Control sequence : power on

➔ PTC operating ➔ power relay on

16. Protection from total current control

■ CT1 control

• If the operating current reaches I1, the operating frequency of the compressor decrease.

• After decreasing the operating frequency by 1step, if operating current is below I1 for 60 seconds continuous-

ly, the operating frequency of compressor increase by 1step.

■ CT2 control

• If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the
compressor restart again.

• If CT2 occurs 5 times within 1hour, the appliance turn off and display ERROR CODE 7.

-22-

Model

7K Btu Series(AC) 12K Btu Series(AC) 7K Btu Series(DC) 12K Btu Series(DC)

Cooling Heating

5A 6A

8.5A

5.5A 6.5A

8.5A

Cooling Heating

5.5A 7.5A
10A

6A 8A

10A

Cooling Heating

7.5A 5.5A
12A

8A 10A

12A

Cooling Heating

7.5A 9.5A
12A

8A 10A

12A

Operating mode

below 38°C

(outdoor temp.)

I1
I2
I1
I2

over 38°C

(outdoor temp.)

Condition

❇ I1:Current of operating frequency down

I2: Current of compressor cut off

cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.

Control table

17. Protection from DC Peak Current

■ DC Peak Current Error by a fault signal of IPM

• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.

• If DC PEAK occurs 5 times within 1 hour, the appliance turns off and display ERROR CODE 6.

■ DC Peak Current Error by the compressor lock

• If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the
appliance turns off and display ERROR CODE 6.

■ DC Peak Current Error by the Outdoor Fan Lock

• If it’s 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65°C while the compressor is
operating, the appliance turns off and display ERROR CODE 6.

18. Portection from overheating of power module

• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.

• It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.)

• It will be blink 4 times, when the thermistor is open or short, also the temperature is over Toff.

19. Portection from overheating of compressor

• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressor

stop instantly.

• It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to below

Fig.)

• Temperature range by COMP SPEC varies by 10°C.

-23-

Comp. off

Comp. free

Fc-1

Fc-2

Target frequency

Toff (95°C)

Ton + 3°C (88°C)

Ton + 6°C (91°C)

Ton (85°C)

130°C
118°C

111°C
108°C

-13°C

-30°C

101°C
93°C

Fhmin

OFF

OFF

0Hz

Fc-2
Fc-1

Setting frequency

[The control graph from heat–sink TH]

20 . Defrosting control

• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

• Defrosting control is available 50 minutes later since heating cycle started and the pipe temperature of out­door unit reaches below -6°C.

-24-

50 min

Setting frequency

Setting speed

Setting

speed

OFF OFF

ON

OFF

OFF(Cooling cycle)

Setting

frequency

15 sec

Fh min step

Operating
frequency
of compressor

4 Wa y valve

Outdoor fan

Indoor fan

Preheat LED

Fh min

Fh+1

OFF

ON ON(Heating cycle)

ON ON

Low

(FhMAX-2 or

FhMAX-3)

15 sec 30 sec

8 min or

over 30˚C(120sec)

30 sec 1 min