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• 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.

• The slide switch on the indoor unit of the appliance should be on the AUTO RESTART position in order that

the Auto restarting operation is available.

• 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

• If no input by the remote control or no switching of the slide 

switch within 7 hours after the appliance operates by the 
Auto restarting operation, the appliance is forced to stop 
at the moment of 7-hr elapse.

• 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.

-22-

over 24°C

21~24°C

18~21°C

below 18°C

22°C

23°C

23°C

24°C

24°C

High speed

Cooling

Healthy Dehumidification

Intake air temp. 

≥

25°C 

➔

Dehumidification

Intake air temp. < 25°C 

➔

Heating

Heating

• 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 

■

• 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 24 seconds continuous-

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

■

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

compressor restart again.

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

-23-

Model

LS-J0760NL

LS-J0961NL/NT

LS-J0820NL

Cooling

Heating

7.5A

8.0A

11.5A

7.5A

8.0A

11.5A

Cooling

Heating

8.5A

10A

13.5A

8.5A

10A

13.5A

Cooling

Heating

10.5A

12A

13.5A

10A

11.5A

13.5A

Operating mode

below 38°C

(outdoor temp.)

I1

I2

I1

I2

over 38°C

(outdoor temp.)

LS-L1260NL/NT

LS-L1220NL

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.

■

• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.
• If DC PEAK occurs 3 times within 1 hour, the appliance turns off and display ERROR CODE 6.

■

• If the DC LINK voltage below DC 350V occurs 5 times within 1 hour while the compressor is operating, the

appliance turns off and display ERROR CODE 6.

■

• 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.

• 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.

• 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.)

-24-

Comp. off

Comp. free

Fc-1

Target

frequency

Toff (84˚C)

Ts (79˚C) = Ton + 5˚C

Ton (74˚C)

130˚C

113˚C

105˚C

98˚C

-13˚C

-30˚C

101˚C

93˚C

Fhmin

OFF

OFF

0Hz

Fc-2

Fc-1

Setting frequency

• 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 45 minutes later since heating cycle started and the pipe temperature of out-

door unit reaches below -6°C.

-25-

45 min

Setting frequency

Setting speed

Setting

speed

OFF

OFF

ON

OFF

OFF(Cooling cycle)

Setting

frequency

30 sec

Fc-1 step

Operating
frequency
of compressor

4 Way valve

Outdoor fan

Indoor fan

Defrost LED

Fc-1

Fh+1

OFF

ON

ON(Heating cycle)

ON

ON

Low

(FhMAX-2 or

FhMAX-3)

30 sec

30 sec

8 min or

over 25˚C(120sec)

30 sec

1 min