LG LS-L1260CL, LS-L1260HL Service manual

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SERVICE MANUAL

Room Air Conditioner

MODEL : LS-L1260CL/CM/CN/CD/CS

LS-L1260HL/HM/HN/HD/HS

Contents

Functions

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

Product Specification

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

Dimensions

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

Refrigeration Cycle Diagram

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

Wiring Diagram

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

Operation Details

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

Display Function

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

Self-diagnosis Function

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

Installation

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

Operation

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

Disassembly of the parts (Indoor Unit)

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

2-way, 3-way Valve

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

Cycle Troubleshooting Guide

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

Electronic Parts Troubleshooting Guide

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

Electronic Control Device

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

Schematic Diagram

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

Exploded View & Replacement Parts List

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

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Functions

• Room temperature sensor. (THERMISTOR)

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

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

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, CHAOS

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

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

OUTDOOR --- Lights up in compressor operation (for Cooling Model)

• 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 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 Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

ƒU Both the indoor and outdoor fan

stops during defrosting.

ƒU The indoor fan stops until the

evaporator pipe temperature will be reached at 28°C.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

-3-

Defrost(Deice) control (Heating)

Hot-start Control (Heating)

-4-

Soft Dry Operation Mode.( )

Remote Controller

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

LOWHIGH

Cooling Operation Mode.( )

Heating Operation Mode.( )

Auto Operation Mode.( )

Fan Operation Mode

Room, Temperature Display

Setting the Time or Timer

ON OFF

SET

CANCEL

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

-5-

Product Specifications

Model Name

Item Unit

Cooling Capacity

Btu/h

12,000 12,000 Heating Capacity - 13,000 Moisture Removal l/h 1.5 1.5

Power Source Ø, V, Hz 1Ø, 220-240V, 50Hz

9.5 9.5 25 25 36 36 46 46

Cooling

1,190 1,200

Heating - 1,120

Running Cooling

5.4 5.5

Current Heating - 5.0 E.E.R. Cooling Btu/hW 10.1 10.0 C.O.P Heating - 3.4

13 13 26 26

888 x 287 x 170

770 x 540 x 245

9 9

34 35

Refrigerant (R22) g 740 830 Airflow Direction Control (Up & Down) § § Remocon Type L.C.D Wireless

inch(mm)

1/4" (6.35)

1/2" (12.7) Sleeping Operation § § Drain Hose § § Connecting Cable 1.0mm

Power Cord 1.0mm

Air Circulation

Noise Level

Input

m3/min

dB (A)¡ 3

Indoor

Outdoor

Indoor

Outdoor

Indoor

Outdoor

Indoor

Outdoor

Indoor

Outdoor

Liquid

Gas

Service Valve

Motor Output

Dimensions (W¡¿H¡¿D)

Net. Weight

LS-L1260CL LS-L1260HL

SPEC. AT 230V

-6-

Installation plate

MODEL

DIM Unit

W mm 888

H mm 287 D mm 170

12K Btu Series

Dimensions

(1) Indoor Unit

-7-

(2) Outdoor Unit

Gas side

(3-way valve)

Liquid side

(2-way valve)

MODEL

12K Btu Series

DIM unit

W mm 770

H mm 540

D mm 245 L1 mm 287 L2 mm 64 L3 mm 518 L4 mm 10 L5 mm 100

Refrigeration Cycle Diagram

-8-

Pipe size(Diameter:Ø)

MAX. Max

MODEL Piping length Elevation

Gas(inch) Liquid(inch)

(m) (m)

1/2" 1/4" 15 7

12K Btu SERIES

INDOOR UNIT OUTDOOR UNIT

HEAT EXCHANGE (EVAPORATOR)

LIQUID SIDE

2-WAY VALVE

GAS SIDE

3-WAY VALVE

(Heating Model only)

ACCUMU LATOR

CHECK VALVE

CAPILLARY TUBE

COMPRESSOR

HEAT EXCHANGE (CONDENSER)

REVERSING VALVE (Heating Model Only)

COOLING HEATING

Wiring Diagram

-9-

3854A30077B

R S

COMP.

FAN

MOTOR

CAPACITOR

TO INDOOR UNIT

OUTDOOR WIRING DIAGRAM

OLP

TERMINAL

BLOCK

1(L) 2(N)

GN/YL

BLACK

GN/YL

3854A30077A

INDOOR WIRING DIAGRAM

CN-DISP1

FUSE

AC250V/T2A

CN-TH1

TRIAC

SH-CAPA.

GN/YL

CN-TAB1

CN-MOTOR

CN-TAB2

RY-COMP.

ZNR

THERMISTOR

FORCED OPERATION

AUTO RESTART

REMOTE CONTROL

MOTOR

MAIN PCB

ASM

DISPLAY PCB ASM

POWER

TO OUTDOOR UNIT

PILLAR TERMINAL

BRBLGN/YL

GN/YL

1(L) 2(N

)

CN-U/D

STEP

MOTOR

(RD)

RD BL YL

GN/YL

BL BK

GN/YL

BL BL

GN/YL

PTC

3854A30077D

FAN

MOTOR

COMP.

REVERSING

VALVE

OUTDOOR WIRING DIAGRAM

TERMINAL BLOCK

TO INDOOR UNIT

OLP

C F

CAPACITOR

1(L) 2(N) 3 4

3854AR6093Y

INDOOR WIRING DIAGRAM

CN-DISP1

FUSE

AC250V/T2A

CN-TH1

TRIAC

SH-CAPA.

GN/YL

CN-TAB1

CN-MOTOR

CN-TAB2

CN-4WAY

RY-COMP.

RY-4WAY

RY-FAN

ZNR

THERMISTOR

FORCED OPERATION

AUTO RESTART

REMOTE CONTROL

MOTOR

MAIN PCB

ASM

DISPLAY PCB ASM

POWER

TO OUTDOOR UNIT

PILLAR TERMINAL

GN/YL

1(L) 2(N

)

3 4

CN-U/D

STEP

MOTOR

1. LS-L1260CL 2. LS-L1260HL

(1) Indoor Unit

(2) Outdoor Unit

Operation Details

1. MAIN UNIT FUNCTION

• DISPLAY

1) C/O Model 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.

Comp. Running Incidator

• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off

2) H/P Model 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.

■ Healthy Dehumidification 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

-10-

• 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 20°C, when above 28°C , it

operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it operates with Super-Low(while in sleep mode, with the medium airflow speed).

• 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

• 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.

• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions.

1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is com-

pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which, whether to carry out defrost control or not is determined.

2) According to the need of defrost control shown above and the elapsed time of heating mode operation at that

moment, the defrost control time is determined.

3) When the determined time of defrost control is below 7 min, heating mode operation continues without carry-

ing out defrost control. According to the procedure stated above, the determination is made again. When the defrost control time is 7 min or longer, defrost control is then carried out.

• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the present temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher, defrost control is completed and heating mode operation is carried out.

• While in defrost control, if the defrost time determined before the start of defrost control is completed, defrost control stops and heating mode operation is carried out regardless of the above condition.

• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of the defrost conditions above.

• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.

-11-

-12-

■ Fuzzy Operation (C/O Model)

• According to the temperature set 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 temperature.

■ Fuzzy Operation (H/P Model)

• 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

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

-13-

2) Fuzzy Operation for Dehumidification

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

• 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

• 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.

-14-

■ 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.

■ Off-Timer <=> On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is

carried out according to the set time.

■ Sleep Timer Operation

• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appli-

ance operation, the operation of the appliance stops.

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

• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature

increases by 1°C. After another 30 min elapse, it increases by 1°C again.

• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to the

low.

• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to

the medium.

■ Chaos Swing Mode

• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are

fixed to the desired direction.

• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

■ Chaos Natural Wind Mode

• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-

flow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

CLOSED

OPEN

< Cooling Mode >

7°

CLOSED

OPEN

< Heating Mode >

7°

-15-

■ Jet Cool Mode Operation (C/O Model)

• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.

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

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

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

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further.

■ Jet Cool Mode Operation (H/P Model)

• 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 at super-high speed for 30 min at cooling mode operation.

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

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

• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further.

■ Auto Restarting Operation

• When the power is restored 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 main unit of the appliance should be on the Auto Restar ting 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 (unit of hour)

• If no input by the remote control or no switching of the slide switch within 7 hr after the appliance operates by the Auto Restarting operation, the appliance is forced to stop at the moment of 7-hr elapse.

Slide Switch

FORCED OPERATION

AUTO RESTART

REMOTE CONTROL

■ Forced Operation (C/O Model)

• 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.

• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch position is switched to the Auto Restarting position (or test operation) or switched from the remote control position to the forced operation position while the power is on, the forced operation is carried out.

• When the slide switch position is switched from the forced operation position to the Auto Restarting position or the remote control position, the forced operation is canceled and the appliance stops operating.

• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed of airflow.

• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation.

-16-

■ Forced Operation (H/P Model)

• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch position is switched to the Auto Restarting (or test operation) position or switched from the remote control position to the forced operation position while the power is on, the forced operation is carried out.

• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed of airflow.

• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operation condition is set according to the intake air temperature as follows.

24°C≤Intake Air Temp ➲ Cooling Mode Operation, 22°C, High Speed 21°C≤Intake Air Temp<24°C ➲ Dehumidification Operation, 23°C, High Speed Intake Air Temp<21°C ➲ Heating Mode Operation, 24°C, High Speed

• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation.

■ Remote Control Operation Mode

• When the remote control is selected by the slide switch on the main unit, the appliance operates according to the input by the remote control.

■ Protection of the evaporator pipe from frosting

• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting.

• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the outdoor fan is turned on according to the condition of the room temperature.

■ Buzzer Sounding Operation

• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.

• When the appliance-pause key is input by the remote control, the long "beep—" sounds.

• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received.

Display Function

1. Heating Model 2. Cooling Model

• Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan

• Sleep Mode • Sleep Mode

• Timer Mode • Timer Mode

• Hot-start, Defrost

Self-diagnosis Function

■ Thermistor Error Indicator

• When the indoor pipe sensor or the room temperature sensor is open or is shorted, the error is indicated.

• To indicate the error, the operation LED (or the cooling LED) flashed at 3 sec interval.

• When the error is cleared, the LED stops flashing, the operation (or cooling) LED is on.

• While in appliance pause, the error is not indicated.

Operation Indicator

Timer Indicator

Sleep Timer Indicator

Defrost Indicator

-17-

Operation Indicator

Timer Indicator

Sleep Timer Indicator

Compressor on Indicator

OUT

DOOR

Installation

1. Installation of indoor, Outdoor unit

-18-

More than 2.3 m

More than 5 cm

More than

5 cm

More than

5 cm

More than 10 cm

More than 70 cm

1) Selection of the best location

1. Indoor unit

2. Outdoor unit

• There should not be any heat source or steam

near the unit.

• There should not be any obstacles to prevent the air circulation.

• A place where air circulation in the room will be good.

• A place where drainage can be easily obtained.

• A place where noise prevention is taken into consideration.

• Do not install the unit near the door way.

• Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.

• If an awning is built over the unit to prevent direct sunlight or rain exposure, be careful that heat radiation from the condenser is not restricted.

• There should not be any animals or plants which could be affected by hot air discharged.

• Ensure the correct distance is left from the wall, ceiling, fence, or other obstacles as indicated in the diagram.

Install the indoor unit on the wall where the height from the floor is more than 2.3 meters.

CAUTION

-19-

5-7mm

Indoor Outdoor

WALL

ø70mm

Center

Right rear pipingLeft rear piping

Center

ø70mm

Installation plate

Marking-off line Thread

Weight

Type "A" screw

2) Indoor Unit Installation

The mounting wall should be strong and solid enough to protect it from the vibration.

1.Mount the installation plate on the wall with four Type "A" screws.

(if mounting the unit on the concrete wall, consider using anchor bolts.)

• Always mount the Installation plate horizontally by aligning the marking-off line by means of the thread and a level.

2. Drill the piping hole with 70mm dia. holecore drill.

• Line according to the arrows marked on lower the left and the right side of the Installation Plate. The meeting point of the extended line is the center of the hole.

• Drill the Piping hole at either the right or the left and the hole should be slightly slanted to the outdoor side.

The lower left and right side of Installation Plate

12K Btu

-20-

2. Piping and Drainage of Indoor Unit

1) Preparation of Piping

1. Cut the pipes and the cable.

• Use the accessory piping kit or the pipes purchased locally.

• Measure the distance between the indoor and the outdoor unit.

• Cut the pipes a little longer than measured distance.

• Cut the cable 1.5m longer than the length of the pipe.

2. Remove burrs.

• Remove burrs from cut edges of pipes.

• Turn the pipe end toward down to avoid the metal powder entering the pipe.

Caution: If burrs are not removed, they may cause a gas leakage.

3. Flaring the pipes.

• Insert the flare nuts, mounted on the connection ports of both indoor and outdoor unit, onto the copper pipes. (When the flare nuts are removed from the indoor unit.) Some gas may leak, as some gas is charged to prevent the inside of the pipe from rusting.

• Fit the copper pipe end into the Bar of flare tool about 0~1.0mm higher.

(See illustration)

• Flare the pipe ends.

4. Tape the flaring portion to protect it from the dust or damages.

Slanted Rough

Pipe cutter

Pipe

Reamer

Point down

"A"

Bar

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Copper pipe

Inclined Cracked Uneven

thickness

Surface

damaged

= Improper flaring =

When properly flared, the internal surface of the flare will evenly shine and be of even thickness. After the flare part comes into contact with the connectors, carefully check the flare finish.

"A"; ø15.88 mm (5/8")

¡ 0~1.0 mm ø12.7 mm (1/2") ¡ 0~0.5 mm ø9.52 mm (3/8") ¡ 0~0.5 mm ø6.35 mm (1/4") ¡ 0~0.5 mm

-21-

To remove the holder, press the bottom of chassis near the holder upward and pull the tab out of its hole.

Tubing holder

Pull

Press

,

Drain hose

Indoor Outdoor

Connecting cable

Connecting

piping

Drain pipe

Indoor unit tubing Flare nut

Spanner

Torque wrench

Plastic bands

Drain hose

Adhesive

Drain pipe

Insulation material

Pipings

Connection of Pipings

1. Remove the tubing holder.

2. Route the drain hose and the indoor tubing.

For right rear piping

3. Insert the piping, the connecting cables and the drain pipe through the piping hole on the wall.

4. Connect the piping and the indoor tubing, and drain hose and drain pipe.

• Don't connect the cable to the indoor unit.

• Wrap the insulation material around the connecting portion.

• Glue up the connection portion of drain hose and drain pipe.

Pipe Size Torque

Liquid Side (1/4") 1.8kg.m

Gas Side (3/8") 4.2kg.m Gas Side (1/2") 5.5kg.m

-22-

Tubing holder

Hook

Push

Taping

Conecting cable

Gas side piping

Drain hose

Liquid side piping

Connecting cable

Drain hose

Press the lower left and right side of the unit against the Installation Plate until the hooks engage with their slots (sound click).

5. Bend the tubing as shown in the figure and bind the piping, the connecting cables and the drain hose altogether.

• Make a small loop for easy connection later.

6. Wrap the tubing, the drain hose and the connecting cable with tape.

7. Indoor unit installation

• Hook the indoor unit onto the upper portion of the

installation plate. (Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure the hooks are properly seated on the installation plate by moving it in left and right.

CAUTION

Take care to arrange the piping, drain hose and cables as the feature 7 page for inser ting it into the indoor unit and mount the indoor unit on the installation plate.

CAUTION

When install, make sure that the remaining parts must be removed clearly so as not to damage the piping and drain hose, especially power cord and connecting cable.

-23-

Installation plate

Pull

To remove the holder, press the bottom of chassis near the holder upward and pull the tab out of its hole.

Tubing holder

Pull

Press

Indoor unit tubing Flare nut

Spanner

Torque wrench

Plastic bands

Drain hose

Adhesive

Drain pipe

Insulation material

Pipings

Taping

Indoor Outdoor

Connecting cable

Connecting

piping

Drain pipe

Drain hose

For left rear piping

3. Insert the connecting cables, the drain pipe and connecting piping through the piping hole on the wall.

4. Connect the piping and the indoor tubing, and drain hose and drain pipe and place the drain pipe into the chassis.

• Don't connect the cable to the indoor unit.

• Make a small loop for easy connection later.

• Glue up the connection portion of drain hose and

drain pipe.

5. Bend the drain hose and bind the drain hose, the piping and the connecting cables altogether.

Pipe Size Torque

Liquid Side (1/4") 1.8kg.m

Gas Side (3/8") 4.2kg.m Gas Side (1/2") 5.5kg.m

-24-

Connecting cable

Drain hose

Indoor/outdoor

connecting cable

Connecting cable

Taping

Gas side piping

Liquid side piping Drain hose

Press the lower left and right side of the unit against the Installation Plate until the hooks engage with their slots (sound click).

6. Wrap the insulation material around the connecting portion.

7. Wrap the tubing, the drain hose and the connecting cable with tape.

8. Indoor unit installation

• Hook the indoor unit onto the upper portion of

CAUTION

Take care to arrange the piping, drain hose and cables as the figure 7 page for inserting it into the indoor unit and mount the indoor unit on the installation plate.

-25-

Outdoor unit

Liquid side piping (Smaller Dia.)

Torque wrench

Gas side piping (Bigger Dia.)

1) Connecting the piping to the Outdoor

unit

1. Align the center of the piping and sufficiently tighten the flare nut with fingers.

2. Finally, tighten the flare nut with torque wrench until the wrench clicks.

• When tightening the flare nut with torque wrench,

ensure the direction for tightening follows the arrow on the wrench.

CAUTION

After the confirmation of the above conditions, prepare the wiring as follows:

1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover.

2) Provide a circuit breaker switch between power source and the unit.

3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)

4) Specification of power source.

5) Confirm that electrical capacity is sufficient.

6) See to it that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.

7) Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.)

8) Never fail to equip a leakage breaker where it is wet or moist.

9) The following troubles would be caused by voltage drop-down.

• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the nor-

mal function of a overload protection device.

• Proper starting power is not given to the compressor.

3. Connecting Piping and Cable to the outdoor unit

Pipe Size Torque

Liquid Side (1/4") 1.8kg.m

Gas Side (3/8") 4.2kg.m Gas Side (1/2") 5.5kg.m

Outdoor unit

Over 5mm

Terminal block (Pillar terminal)

Holder for

power supply

cord

Cover control

Connecting cable

-26-

Connection of the cable

1. Remove the cover control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually as the following.

2. Secure the cable onto the control board with the holder (clamper).

3. Refix the cover control to the original position with the screw.

4. Use a recognized circuit breaker 16A between the power source and the unit. A disconnection device to adequately disconnect all supply lines must be fitted.

1(L)Terminals on the outdoor unit

Terminals on the outdoor unit

Terminals on the indoor unit

1(L)

2(N)

3 4

2(N)

BROWN BLUE G/Y BLACK

RED

BROWN BLUE G/Y

RED

BROWN

BROWN BLUE BLACK

BLACK

G/Y RED

REDG/Y

BLUE

BROWN

BLUE

GREEN/YELLOW

BROWN BLUE

GREEN/YELLOW

1) Cooling only type

2) Cooling & Heating type

The power cord connected to the indoor unit should be complied with the following specifications (Type H05VV-F approved by HAR or SA).

The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications (Rubber insulation, type H07RN-F approved by HAR or SA).

NORMAL CROSSSECTIONAL AREA

1.0mm

NORMAL CROSSSECTIONAL AREA

1.0mm

Color of Wires

The length of the power supply cord should be over 1.8m measured from the power supply cord entry of the cabinet to the middle of the live pin of the plug.

Color of Wires

-27-

Pull the right and the left side.

Screw

1) Checking the Drainage

1. Remove the Grille from the cabinet.

• Set the up-and-down air direction louver to the open position (horizontally) by finger pressure.

• Remove the securing screws.

• To remove the Grille, pull lower the left and right side of the grille toward you (slightly tilted) and lift it straight upward (Two tabs on the top inside edge of chassis are clear of their slots).

2. Check the drainage.

• Pour a glass of water on the evaporator.

• Ensure if water flows drain hose of indoor unit without any leakage.

4. Checking the Drainage and Connecting the cable to Indoor unit

-28-

Connecting cable

2) Connecting of the cable to the indoor unit

1. Connect the wires to the terminals on the control board individually according to the outdoor unit connection.

• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as the indoor unit.

2. Attach the Grille onto the cabinet.

• Grasp lower the left and the right side of the Grille and engage two tabs on the top inside edge of the grille with two slots on the cabinet's top front edge.

• Press the Grille toward to the cabinet until it will be back into place.

1(L)Terminals on the outdoor unit

Terminals on the outdoor unit

Terminals on the indoor unit

1(L)

2(N)

3 4

2(N)

BROWN BLUE G/Y BLACK

RED

BROWN BLUE G/Y

RED

BROWN

BROWN BLUE BLACK

BLACK

G/Y RED

REDG/Y

BLUE

BROWN

BLUE

GREEN/YELLOW

BROWN BLUE

GREEN/YELLOW

1) Cooling only type

2) Cooling & Heating type

Color of Wires

-29-

Plastic band

Taping

Drain hose

Pipings

Connecting cable

• Trap is required to prevent the electrical parts from entering the water.

Trap

Seal a small opening around the pipings with gum type sealer.

3) Form the piping

1. Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands.(for the right piping)

• If you want to connect an additional drain hose,

the end of the drain-outlet should be off the ground.(Do not dip it into water, and fix it on the wall to avoid swinging in the wind.)

2. Tape the Piping, drain hose and Connecting Cable from down to up.

3. Form the piping gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent.

2. Tape the Pipings and Connecting cable from down to up.

3. Form the pipings gathered by taping along the exterior wall, make the Trap to be required to prevent the room from entering the water.

4. Fix the pipings onto the wall by saddle or equivalent.

In case of the Outdoor unit to be installed below the position of the Indoor unit.

In case of the Outdoor unit being installed upper position of the Indoor unit.

-30-

Gas side

Liquid side

Cap

Hexagonal wrench

2-way valve

(Open)

3-way valve

(Close)

No leakage found Leakage found

• Re-tighten the connecting portion with torque wrenches.

Leakage ceased

Leakage persists

Leakage ceased

Repair

Result

5. To open 2-way valve again, turn the valve

stem counter-clockwise until it stops.

Terminal block

(pillar terminal)

6. To purge the air, push the pin on the service port of 3-

way valve for three seconds with a hexagonal wrench and set it free for one minute.

7. Set both liquid and gas side valves to open position with the Hexagonal wrench for the unit operation.

5. Air Purging of the Piping and Indoor Unit

1) Air purging

The air remaining which contains moisture in the refrigeration cycle may cause a malfunction on the compressor.

1. Remove the caps from the 2-way and 3-way valves.

2. Remove the service-port cap from the 3-way valve.

3. To open the valve, turn the valve stem of 2-way valve counter-clockwise approx. 90¡˘and hold it there for five seconds, then close it.

4. Check a gas-leakage of the connecting portion of the pipings.

CAUTION: Do not leak the gas in the air during

air purging, with vacuum pump as possible as you can.

-31-

8. Checking a gas leakage (1) Connect the manifold gauge to the service port of 3-way valve.

Measure the pressure.

(2) Keep it for 5-10 minutes.

Ensure if the pressure indicated on the gauge is as same as that of measured at first time.

Liquid side

Gas side

Indoor unit

Outdoor unit

Closed

NOTE:

The additional gas for air purping has been charged in the outdoor unit. However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and the charge

set will be needed.

CAUTION : Do not leak the gas in the air during air purging. Use vaccum pump as far as possible

-32-

6. Pipe length and the elevation

• Capicity is based on standard length and maximum allowance length is the basis of reliability.

• Oil trap should be installed per 5~7 meters.

• Numerical value in "( )" is for Rotary Comp. model.

CAUTION

In case more than 5m

Max. Piping

Length

£ (m)

Capacity

(Btu/h)

7~12K 15 7 5 20

Max.

Elevation

£ (m)

Standard

Length(m)

Additional Refrig-

erant (g/m)

Outdoor unit

Indoor unit

Oil trap

Outdoor unit

Indoor unit

-33-

7. Test running

Settlement of Outdoor Unit

• Anchor the outdoor unit with a bolt and nut (ø10cm) tightly and horizontally on a concrete or rigid mount.

• When installing on the wall, roof or rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.

• In the case when the vibration of the unit is conveyed to the house, settle the unit with an antivibration rubber.

2) Evaluation of the performance

1. Measure the temperature of the intake and discharge air.

2. Ensure the difference between the intake temperature and the discharge one is more than 8 °C(Cooling) or reversely (Heating).

1) Connection of power supply

1. Connect the power supply cord to the independent power supply.

• Circuitbreaker is required.

2. Prepare the remote controller.

• Insert two batteries provided.

Remove the battery cover from the remote controller.

• Slide the cover according to the arrow direction.

Insert two batteries. (Two "R03" or "AAA" dry-cell batteries or equivalent.)

• Be sure that the (+) and (-) directions are cor-

rect.

• Be sure that both batteries are new.

Re-attach the cover.

• Slide it back into position.

3. Operate the unit for fifteen minuites or more.

Battery Cover

Bolt

Tubing

connection

Discharge air

-34-

Operation

(1) Name and Function-Remote Control (Cooling Models)

Signal transmitter

Transmits the signals to the room air conditioner.

Remote Control

ON OFF

SET

CANCEL

Signal transmitter

7 8

START/STOP BUTTON

Operation starts when this button is pressed and stops when the button is pressed again.

ROOM TEMPERATURE SETTING BUTTONS

Used to select the room temperature.

INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps low, medium, high, or CHAOS.

JET COOL

Used to start or stop the speed cooling. (Speed cooling operates super high fan speed in cooling mode.)

CHAOS SWING BUTTON

Used to stop or start louver movement and set the desired up/down airflow direction.

ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping operation.

TIME SETTING BUTTONS

Used to adjust the time.

TIMER SET/CANCEL BUTTONS

Used to set the timer when the desired time is obtained and to cancel the Timer operation.

SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.

AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating (turns indoor fan on/off).

ROOM TEMPERATURE CHECKING BUTTON

Used to check the room temperature.

RESET BUTTON

Used prior to resetting time or after replacing batteries.

OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

234

567

-35-

(2) Name and Function-Remote Control (Heat Pump Models)

Signal transmitter

Transmits the signals to the room air conditioner.

Remote Control

START/STOP BUTTON

Operation starts when this button is pressed and stops when the button is pressed again.

ROOM TEMPERATURE SETTING BUTTONS

Used to select the room temperature.

INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps low, medium, high, or CHAOS.

JET COOL

Used to start or stop the speed cooling. (Speed cooling operates super high fan speed in cooling mode.)

CHAOS SWING BUTTON

Used to stop or start louver movement and set the desired up/down airflow direction.

ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping operation.

TIME SETTING BUTTONS

Used to adjust the time.

TIMER SET/CANCEL BUTTONS

Used to set the timer when the desired time is obtained and to cancel the Timer operation.

SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.

AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating (turns indoor fan on/off).

ROOM TEMPERATURE CHECKING BUTTON

Used to check the room temperature.

RESET BUTTON

Used prior to resetting time or after replacing batteries.

OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

34567

Signal transmitter

6 7 8

ON OFF

SET

CANCEL

Disassembly of the parts (Indoor unit)

Warning :

Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”.

To remove the Grille from the Chassis.

• Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.

• Remove the securing screws (9K Btu models: 2EA).

• To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward.

1. To remove the sensor, housing connect, earth

conductor & step motor conductor with sensor holder, Motor, Evaporator & P.C.B.

Power Conductor

Step Motor Conductor

Earth Conductor

Motor Conductor

Sensor Conductor

-36-

2. To remove the Control Box.

• Remove 2 securing screws.

• Pull the control box out from the chassis carefully.

3. To remove the Discharge Grille.

• Unhook the discharge grille and pull the discharge grille out from the chassis carefully.

4. To remove the Evaporator.

• Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA).

-37-

• Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot.

5. To remove the Cross-Flow Fan

• Loosen the screw securing the cross-flow fan to the fan motor (do not remove).

• Lift up the right side of the cross-flow fan and the fan motor, separate the fan motor from the cross-flow fan.

• Remove the left end of the cross-flow fan from the self-aligning bearing.

-38-

2-way, 3-way Valve

2-way Valve (Liquid Side) 3-way Valve (Gas Side)

Shaft position Shaft position Service port

Closed Closed Closed

(with valve cap) (with valve cap) (with cap)

Open Closed Open

(counter-clockwise) (clockwise) (push-pin or with

vacumm pump)

Open Open Closed

(with valve cap) (with valve cap) (with cap)

Closed Open Open

(clockwise) (counter-clockwise) (connected manifold

gauge)

Open Open Open

(with charging

cylinder)

Open Open Open

(with charging

cylinder)

Open Open

Works

Shipping

Air purging (Installation)

Operation

Pumping down (Transfering)

Evacuation (Servicing)

Gas charging (Servicing)

Pressure check (Servicing)

Gas releasing (Servicing)

Valve cap

Open position Closed position

Service port

Service port cap

To outdoor unit

Flare nut

To piping connection

To outdoor unit

Hexagonal wrench (4mm)

Open position Closed position

To piping connection

Flare nut

-39-

Open

(with charging cylinder)

Open

(with charging cylinder)

1. Air purging

Required tools : hexagonal wrench, adjustable

wrench, torque wrenches, wrench to hold the joints, and gas leak detector.

The additional gas for air purging has been charged in the outdoor unit. However, if the flare connections have not be done correctly and there gas leaks, a gas cylinder and the charge set will be needed.

The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling capacity, and could lead to a malfunction.

• Procedure

(1) Recheck the piping connections. (2) Open the valve stem of the 2-way valve

counterclockwise approximately 90°, wait 10 seconds, and then set it to closed position.

– Be sure to use a hexagonal wrench to operate

the valve stem.

(3) Check for gas leakage.

– Check the flare connections for gas leakage.

(4) Purge the air from the system.

– Set the 2-way valve to the open position and

remove the cap from the 3-way valve’s ser vice port.

– Using the hexagonal wrench to press the valve

core pin, discharge for three seconds and then wait for one minute. Repeat this three times.

(5) Use torque wrench to tighten the service por t

nut to a torque of 1.8kg.cm.

(6) Set the 3-way valve to the back seat. (7) Mount the valve stem nuts to the 2-way and 3-

way valves.

(8) Check for gas leakage.

– At this time, especially check for gas leakage

from the 2-way and 3-way valve’s stem nuts, and from the service port nut.

Caution

If gas leakage are discovered in step (3) above, take the following mesures :

If the gas leaks stop when the piping connections are tightened further, continue working from step (4). If the gas leaks do not stop when the connections are retightened, repair the location of the leak, discharge all of the gas through the service port, and then recharge with the specified amount of gas from a gas cylinder.

Service port nut: Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents the gas leakage from the refrigeration cycle.

* CAUTION : Do not leak the gas in the air during Air purging.

Liquid side

Outdoor unit

3-way valve

Gas side

Indoor unit

2-way valve

Open

Clsed

-40-

2. Pumping down

• Procedure

(1) Confirm that both the 2-way and 3-way valves

are set to the open position.

– Remove the valve stem caps and confir m that

the valve stems are in the raised position.

– Be sure to use a hexagonal wrench to operate

the valve stems.

(2) Operate the unit for 10 to 15 minutes.

(3) Stop operation and wait for 3 minutes, then

connect the charge set to the service port of the 3-way valve.

– Connect the charge hose with the push pin to

the service port.

(4) Air purging of the charge hose.

– Open the low-pressure valve on the charge set

slightly to air purge from the charge hose.

(5) Set the 2-way valve to the closed position.

(6) Operate the air conditioner at the cooling

cycle and stop it when the gauge indicates 1kg/cm2g.

(7) Immediately set the 3-way valve to the closed

position.

– Do this quickly so that the gauge ends up

indicating 3 to 5kg/cm2g.

(8) Disconnect the charge set, and mount the 2-

way and 3-way valve’s stem nuts and the service port nut.

– Use torque wrench to tighten the service por t

nut to a torque of 1.8 kg.m.

– Be sure to check for gas leakage.

Closed

Purge the air

Outdoor unit

Indoor unit

Liquid side

Gas side

Open

2-Way valve

3-Way valve

-41-

1) Re-air purging

(Re-installation)

• Procedure

(1) Confirm that both the 2-way valve and the 3-

way valve are set to the closed position.

(2) Connect the charge set and a gas cylinder to

the service port of the 3-way valve.

– Leave the valve on the gas cylinder closed.

(3) Air purging.

– Open the valves on the gas cylinder and the

charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45° for 3 seconds then closing it for 1 minute; repeat 3 times.

– After purging the air, use a torque wrench to

tighten the flare nut on the 2-way valve.

(4) Check for gas leakage.

– Check the flare connections for gas leakage.

(5) Discharge the refrigerant.

– Close the valve on the gas cylinder and

discharge the refrigerant until the gauge indicates 3 to 5 kg/cm2g.

(6) Disconnect the charge set and the gas

cylinder, and set the 2-way and 3-way valves to the open position.

– Be sure to use a hexagonal wrench to operate

the valve stems.

(7) Mount the valve stem nuts and the service

port nut.

– Use torque wrench to tighten the service por t

nut to a torque of 1.8 kg.m.

– Be sure to check for gas leakage.

* CAUTION:

Do not leak the gas in the air during Air Purging.

Closed

OPEN

Closed

Gas cylinder

R22

Outdoor unit

Indoor unit

Liquid side

Gas side

2-Way valve

3-Way valve

-42-

2) Balance refrigerant of the 2-way, 3-way valves

(Gas leakage)

• Procedure

(1) Confirm that both the 2-way and 3-way valves

are set to the back seat.

(2) Connect the charge set to the 3-way valve’s

port.

– Leave the valve on the charge set closed. – Connect the charge hose with the push pin to

the service port.

(3) Open the valve (Lo side) on the charge set

and discharge the refrigerant until the gauge indicates 0 kg/cm2G.

– If there is no air in the refrigerant cycle (the

pressure when the air conditioner is not running is higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0.5 to 1 kg/cm2G. if this is the case, it will not be necessary to apply a evacuatin.

– Discharge the refrigerant gradually; if it is

discharged too suddenly, the refrigeration oil will also be discharged.

Open

3-Way valve

2-Way valve

Gas side

CLOSEOPEN

Outdoor unit

Liquid side

Indoor unit

-43-

3. Evacuation

(All amount of refrigerant leaked)

• Procedure

(1) Connect the vacuum pump to the charge set’s

center hose

(2) Evacuation for approximately one hour.

– Confirm that the gauge needle has moved

toward -76 cmHg (vacuum of 4 mmHg or less).

(3) Close the valve (Lo side) on the charge set,

turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).

(4) Disconnect the charge hose from the vacuum

pump.

– Vacuum pump oil.

If the vacuum pump oil becomes dirty or depleted, replenish as needed.

Open

Vacuum pump

2-Way valve

Outdoor unit

Liquid side

Indoor unit

Gas side

3-Way valve

OPEN

-44-

4. Gas Charging

(After Evacuation)

• Procedure

(1) Connect the charge hose to the charging

cylinder.

– Connect the charge hose which you dis-

connected from the vacuum pump to the valve at the bottom of the cylinder.

– If you are using a gas cylinder, also use a scale

and revers the cylinder so that the system can be charged with liquid.

(2) Purge the air from the charge hose.

– Open the valve at the bottom of the cylinder

and press the check valve on the charge set to purge the air. (Be careful of the liquid refrigerant). The procedure is the same if using a gas cylinder.

(3) Open the valve (Lo side on the charge set and

charge the system with liquid refrigerant.

– If the system can not be charged with the

specified amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then repeat the procedure (pumping down-pin).

(4) Immediately disconnect the charge hose from

the 3-way valve’s service port.

– Stopping partway will allow the gas to be

discharged.

– If the system has been charged with liquid

refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose.

(5) Mount the valve stem nuts and the service

port nut.

– Use torque wrench to tighten the ser vice port

nut to a torque of 1.8 kg.m.

– Be sure to check for gas leakage.

This is different from previous procedures. Because you are charging with liquid refrigerant from the gas side, absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner.

-45-

Indoor unit

Liquid side

Gas side

Check valve

Charging cylinder

(1)

OPEN

Open

Outdoor unit

2-Way valve

Open 3-Way valve

Cycle Troubleshooting Guide

Trouble analysis

1. Check temperature difference between intake and discharge air and operating current.

Temp. Difference

Temp. difference : approx. 0°C Current : less than 80% of

rated current

Temp. difference : approx. 8°C Current : less than 80% of

rated current

Temp. difference : less than 8°C Current : over the reated

current

Temp. difference : over 8°C

Operating Current

• All amount of refrigerant leaked out. Check refrigeration cycle.

• Refrigerant leakege

Clog of refrigeration cycle Defective compressor

• Excessive amount of refrigerant

• Normal

Notice :

Temperature difference between intake and discharge air depends on room air humidity. When the room air humidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower temperature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

Notice :

1. The suction pressure is usually 4.5~6.0 kg/cm2G(Cooling) at normal condition.

2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty.

Suction pressure Temperature

(Compared with (Compared with Cause of Trouble Description

the normal value) the normal valve)

Defective compressor Current is low. Defective 4-way reverse valve

Excessive amount of High pressure does not quickly

Normal refrigerant rise at the beginning of

operation.

Insufficient amount of Current is low.

Lower Higher refrigerant (Leakage)

Clogging Current is low.

High

Higher

-46-

-47-

1. Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.)

Electronic Parts Troubleshooting Guide

Turn off Main Power

Turn on Main Power

Does "beeping" sound is made from the Indoor Unit?

Primarily, the operating condition of Micom is OK.

Check the voltage of po wer(About A C 220V/A C240V, 50Hz)

• Main power's voltage

• Voltage applied to the unit

• Connecting method of Indoor/Outdoor connecting cable

• Check PWB Ass'y

- Fuse

- Pattern damage

- Varistor(ZNR01J)

Check the connection housing f or contacting

• Connector related to CN-POWER

• Connector related to CN-MOTOR

• Connector contacting of Outdoor Fan/Compressor

• Display PWB Ass'y Check

Check each load(Indoor/Outdoor Fan Motor, Compressor, Stepping Motor) and contacting condition of related connector

PCB Board Operation Check

Items

• Power Transformer (Indoor unit)

- Input Voltage

- Output Voltage

‹X

• IC01D(7812) Output (Indoor/Outdoor unit)

‹X

• IC02D(7805) Output (Indoor/Outdoor unit)

‹X

• IC01A(KIA7036, Reset IC) X01(8MHz)

• Replace Trans

• Replace IC01D

• Replace IC02D

• Replace faulty parts

- About AC220V/240V±10% - Check the power voltage

- About AC14±3V

• DC +12V

• DC +5V

• Voltage of Micom No. 2, (DC +4.5V over) and Soldering condition.

Content Remedy

YES

(After 10 seconds)

-48-

2. The product is not operate with the remote control.

Turn on Main Power

While the compressor has been stopped, the compressor does not

operate owing to the delaying function for 3 minutes after stopped.

Caused by other parts except the remote control

Cause by the remote control

When the mark( ) is displayed in LCD screen, replace battery .

Check the contact of CN-DISP1 connector.

When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller. (When operated in the Sleeping Mode, the wind speed is set to the low speed by force.)

Check DISP PWB Ass'y

- Voltage between CN DISP1 ¤ - ¤ : DC +5V

Check the connecting circuit between the remote controller MICOM (No. § ) - R17(2Ω) - IR LED - TR - R16(2.2KΩ).

Check point

• Check the connecting circuit between PIN¤ŁR01L(1K) - C01L(680PF) - MICOM PIN

• Check Receiver Ass'y

-49-

3. Compressor/Outdoor Fan are unable to drive.

Turn on Main Power

Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least.

When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.

Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).

When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor Fan is stopped.

• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K), R03H(1.0K) Micom (No.3.4) (Indoor unit).

• Check the indoor temperature sensor is disconnected or not(About 10k Ω/ at 25°C).

Turn off Main Power

• Check the electrical wiring diagram of outdoor side.

• Check the abnormal condition for the component of Compressor/Outdoor Fan Motor.

• Check the "open" or "short" of conmecting wires between indoor and outdoor.

Check Relay(RY - COMP) for driving compressor.

• When the power(About AC220V/240V) is applied to the connecting wire terminal support transferred to compressor, PWB Ass'y is normal.

• Check the circuit related to the relay.

Check point COMP ON COMP OFF

Between Micom(No.

DC5V DC0V

62) and GND

Between IC01M(No. 14) Below DC 1V

About DC12V

and GND (app)

-50-

Check the TRIAC high speed operation by remote control.

(The Indoor Fan Motor is connected)

Turn off Main power

Check the connection of CN-MOTOR

Check the Fan Motor

Check the Fuse(AC250V/T2A)

Turn ON Main Power

Check the related circuit of indoor Fan Motor.

• The pin NO 63 of Micom, and the part for driving TRIAC(the input and output signal of IC01M, PIN NO 2, 15)

• Check the pattern

• Check the TRIAC

- TRIAC Open: Indoor Fan Motor never operate

- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.

4. When indoor Fan does not operate.

The voltage of PIN NO 1(blue) and 3(yellow) of CN-MOTOR.

About AC 180V over About AC 50V over

TRIAC is not damaged TRIAC Check

-51-

• Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor.

• If the regular torque is detected when rotating the Vertical Louver with hands ¢¡ Normal

• Check the connecting condition of CN-U/D Connector

• Check the soldering condition(on PWB) of CN-U/D Connector

If there are no problems after above checks

• Confirm the assembly conditions that are catching and interfering parts

in the rotation radial of the Vertical Louver

5. When Vertical Louver does not operate.

Check the operating circuit of the Vertical Louver

• Confirm that there is DC +12V between pin¤ (RED) of CN-U/D and GND.

• Confirm that there is a soldering short at following terminals.

- Between , , and of MICOM

- Between ¤Œ, ¤º, ¤ and ¤ of IC01M

- Between ¤ , ¤æ, ¤ and ¤ of IC01M

58 59 60 61

-52-

6. When Heating does not operate

Operate “Heating Mode( )” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least.

In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C.

Check the connector of intake and pipe sensor(thermistors)

• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K), R03H(1.0K), Micom(No. 3, 4).

• Check the indoor room temperature is disconnected or not (about 10KΩ/at 25°C).

• Check the indoor pipe temperature is disconnected or not (about 5KΩ/at 25°C).

Turn ON Main Power

Check the DC voltage on the PWB ASS’Y

• The details of check are as followings

Check point

Between Micom

(NO.62) and GND

Between IC01M

(NO.14) and GND

Comp ON

DC 5V

Below DC 1V

Comp OFF

DC 0V

About DC

12V

Check point

Between Micom

(NO.54) and GND

Between IC02M

(NO.16) and GND

4 way ON

DC 5V

Below DC 1V

4 way OFF

DC 0V

About DC 12V

Check point

Between Micom

(NO.53) and GND

Between IC02M

(NO.15) and GND

Fan ON

DC 5V

Below DC 1V

Fan OFF

DC 0V

About DC 12V

• Comp Relay.

• 4 way Relay

• Outdoor fan Relay

-53-

Turn off Main Power

• Check the electrical wiring diagram of outdoor side.

• Check the abnormal condition for the component of Compressor/Outdoor Fan Motor, 4 way.

• Check the "open" or "short" of connecting wires between indoor and outdoor.

-54-

Electronic Control Device

(1) MAIN P.C.B ASM

PCB ASS'Y SVC PART LIST

NO. MODEL P/NO

OPTIONAL FUNCTION

OR1H OR2H OR3H OR4H OR5H OR6H 1 LS-L1260CL 6871A20055S 6.8K OPEN 1K 5.1K 10K 39K 2 LS-L1260HL 6871A20055T 91K 56K 1K 5.1K 10K 39K

-55-

(2) Display Ass'y

•

LS-1260CL/HL(P/NO.:6871A30009C)

Schematic Diagram

-56-

Cooling Only Series

-57-

Heat Pump Series

-58-

Exploded View & Replacement Parts List

1. Indoor Unit

(1) LS-L1260CL/HL

9 24

4 2 1

-59-

1 2 3 4 5 6 7 8

9 10 11 12

13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31

Parts List (LS-L1260CL/HL)

PART NO.NO. PART NAME

1H00843A

3H03651A 4681A20003P 3141A20003D

5901AR6141B

3H02821B

5421A20031 5421A20032 6711A20010

3H01420A

3A00375D

4995A20094

4995A20082 6411A20006B 4994A00001A

2H02449

6871A30009

6323AQ2333 4681AR2727H 5251AR2575A

5990A30006A 5990A30007A 3531A10023B 3530A10018A

3531A20028 3531A10024

3530A10020B

6871A20055 3550A30035B 5230A20004A

3H01487A

4H03048

4930AR6138A

Q/TY

REMARKS

LS-L1260CL LS-L1260HL

PLATE INSTALLATION HOLDER, TUBE MOTOR, BLOWER CHASSIS ASM CROSS FLOW FAN BEARING ASM EVAPORATOR ASM EVAPORATOR REMOTE CONTROL ASM SOCKET FLARE SOCKET FLARE CONTROLLER ASM

POWER CORD ASSY CONTROL BOARD TUBING ASM PWB(PCB) ASSY, DISPLAY THERMISTEOR ASSY STEPPING MOTOR DRAIN HOSE ASM VANE

DISCHARGE GRILLE ASM DISCHARGE GRILLE INLET GRILLE FRONT GRILLE ASM FRONT GRILLE PWB(PCB)ASSY, MAIN COVER CONTROL FILTER ASSY SH CAPACITOR PILLAR TERMINAL HOLDER, EVA

1 1 1 1 1

1 1E 1A 1A

1 1A

1J 1E 1A

1 1 1 1 1

1 1D 1E

1 1S

1 1H

1 1 1 1 1

1 1G 1B 1B

1J 1E 1A

1 1 1 1 1

1 1C 1D

R R R R R R R

R R R R R R R R R R R R R R R R R

R R R R

2. Outdoor unit

LS-1260CL/HL

-60-

33 16

212015

NO PART No. LS-L1260HCL LS-L1260HL REMARK

-61-

Parts List (LS-L1260CL/HL)

* NOTE: ( ) is for LGEAP

PART NAME

BASE PAN W.ASM MOUNT MOTOR MOTOR,FAN FAN PLAIN WASHER FAN NUT SUPPORT VALVE CONDENSER ASM COMPRESSOR ASM ANTI VIBRATION WASHER HEXAGON NUTS(D8.0) SERVICE VALVE(1/4".H4) SERVICE VALVE(1/2".H4) OVER LOAD PROTECT OR O.L.P SPRING CONTROL BOX ASM CLAMP CAPACITOR SH CAPACITOR TERMINAL BLOCK

TERMINAL COVER NUT, TERMINAL COVER GRILLE REAR PANEL COVER CONTROL FRONT PANEL ASM BAND CORD CONTROL BOX TUBE DISCHARGE

TUBE SUCTION

ORIFICE GRILLE DISCHARGE REVERSING VALVE ASM REVERSING COIL SOUND PROOF HANDLE CAPILLARY FINAL ASSY

1 2 3 4 5

5-1

6 7 8

9 10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27

29 30 31 32 33 34 35

1 1 1 1 1 1

1 3

1 1 1

1 1

1 1C 1B

1 1 1

1 1 1 1 1 1

1 3

1 1

1 1E 1B

R R

R R R

R R

R R R

3041A20008 4960A10002A 4681A20004H 5901A10004A

1WPA0600014

4H02861A

4908A20006B

5403A20026 5416A20003L

4H00982E

4810AR4155

1NHA0801206

2H02479 2H01890

6750U-L005A

4970A30009A

4995A20083

4H01008A

2AH01451P

3A00093D

4G00103

3550U-L002D

4H00947A

3721A20026B

3551A30023

3721A20027

4H01688E

4994A20008A

5210A2017A 5210A20184A 5211A20134A 5210A30683A 4948A20001A 3530A20006B 5211A20140A

3A02028Y

3096A30010A

3H03168D 5211A20133B 5211A20141A

P/No.: 3828A30042G

January, 2000

Printed in Korea

LG LS-L1260CL, LS-L1260HL Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual