LG LP-10091CL/XL, LP-15091CL/XL, LP-20091CL/XL Service Manual

Package Air Conditioner

SERVICE MANUAL

MODEL: LP-10091CL/XL

LP-15091CL/XL LP-20091CL/XL

1. Preface

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

3

2. Dimensions

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

7

3. Refrigerant Cycle Diagram

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

8

4. Wiring Diagram

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

9

5. Operation Details

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

17

6 Installation

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

20

7. 3-Way Valve

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

33

8. Troubleshooting Guide

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

40

9. Electronic Control Device

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

53

10. Schematic Diagram

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

55

11. Exploded View & Replacement Parts List

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

56

– 2 –

CONTENTS

This service manual provides various service information, containing the mechanical and electrical parts and etc. This package air conditioner was manufactured and assembled under the strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1.1 Safety Precautions

1. When servicing the unit, set the main SWITCH to OFF and remove the POWER SUPPLY cables.

2. Observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

3. After servicing the unit, make an insulation resistance test to protect the customer from being exposed to shock

hazards.

1.2 Features

1. Design for cooling

2. Super energy efficiency

3. Removable air filter

4. 3 minute delay circuit

5. Child Lock function (LP-10091CL/XL, 15091CL/XL)

7. Micom Control (LP-10091CL/XL, 15091CL/XL)

8. 7 hour timer (LP-10091CL/XL, 15091CL/XL)

– 3 –

1. PREFACE

– 4 –

POWER SUPPLY Ø, V, Hz COOLING CAPACITY Btu/hr

ELECTRIC HEATER KW CAPACITY

POWER INPUT

COOLING

W

E/ HEATER

W RUNNING COOLING W CURRENT E/ HEATER W

MODEL MAKER TYPE

COMPRESSOR

COOLING Btu/hr CAPACITY INPUT (KW) LRA A

NOISE LEVEL

INDOOR

dB(A)

OUTDOOR

dB(A)

AIR

INDOOR CMM

CIRCULATION

OUTDOOR

CMM REFRIGERANT (R-22) kg HEAT

INDOOR

R/C/FPI

EXCHANGER

OUTDOOR

R/C/FPI

FAN

INDOOR

TYPE

OUTDOOR

TYPE

ROOM TEMPERATURE CONTROL

WIDTH

INDOOR

HEIGHT

mm DEPTH WIDTH

OUTDOOR

HEIGHT

mm DEPTH

NET WEIGHT

INDOOR kg OUTDOOR kg

CONNECTIONS

LIQUID inch(

mm)

GAS inch(

mm)

ITEMS

UNIT

MODEL

LP-10091CL LP-15091CL LP-15091XLLP-10091XL LP-20091CL LP-20091XL

3,220/380, 60 3,220/380, 60 3,220/380, 60

100,000 150,000 200,000

-20-30- 40

13,000 13,000 18,500 18,500 24,500 24,500

- 20,000 - 30,000 - 40,000

35.4/21 35.4/21 53.5/31 53.5/31 71/43 71/43

- 53/35 - 78/46 - 106/61 QR12M2-ES8 QR90K2-ES8 QR12M2-ES8

COPELAND COPELAND COPELAND

RECIPRO RECIPRO RECIPRO

115,000 91,100 115,000

12,660 9.59 12,660

213/123 191/110 213/123

60 63 65 62 65 68 89 130 150

150 150 X 2 150 X 2

6.5 8.0 X 2 7.8 X 2 3/ 33/ 17 4/ 28/ 15 4/ 28/ 15 2/ 36/ 17 2/ 34/ 17 2/ 36/ 17

SIRCCO

PROPELLER

MICOM MANUAL 1,050 1,558 1,558 1,860 1,920 1,920

495 700 700

1,245 1,320 1,245

930 990 930 650 650 650

137 155 200 223 200 234

180 170 x 2 180 x 2

1/2 5/8 5/8

11/10 1 11/10

D

I M E N S

I O N S

1.3 Product Specifications

– 5 –

1.4 Functions

Indoor Unit

Power Switch ON/OFF

Operation Mode Control

Sensing the room temperature

Sensing the pipe temperature

Controlling the room temperature

Starting Current Control

Timer Delay Safety Control

Indoor Fan Speed Control

Operation Indication lamps

Temperature Setting

Airflow Direction Control

Room temperature Display

Timer Control

• Cooling, Fan, Soft dry, Auto operation ⇒ "CL" series Model

• Cooling, Heater, Fan, Soft dry, Auto operation ⇒ "XL" series Model

• Room temperature sensor (Thermistor)

• Pipe temperature sensor (Thermistor) ⇒ LP-10091CL/XL

• Maintains the room temperature in accordance with the setting temperature.

• Indoor fan is delayed for 3 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• Duct, High, Low ⇒ LP-10091CL/XL

• High, Low⇒LP-15091CL/XL • High⇒LP-20091CL/XL

• Up : up to 30°C

• Down : down to 16°C

• Airflow direction Manual control

• Low, 10° ~ 35°C, Hi (LP-10091CL/XL, 15091CL/XL)

• Off Timer (1, 2, 3....7 hour) (LP-10091CL/XL, 15091CL/XL)

– 6 –

Outdoor Unit

Outdoor Fan Speed Control

• One speed

• Discharge pressure sensor (High Pressure Switch)

• Suction pressure sensor (Low Pressure Switch)

Sensing Discharge Pressure For Compressor

Sensing Suchion Pressure for Compressor

2.1 LP-10091CL/XL

2.2 LP-15091CL/XL

2-3 LP-20091CL/XL

– 7 –

2. DIMENSIONS

•

Cooling Cycle

– 8 –

3. REFRIGERANT CYCLE DIAGRAM

INDOOR UNIT

LIQUID SIDE

CAPILLARY

TUBE

HEAT

EXCHANGER

ACCUMULATOR

MUFFLER

COMPRESSOR

HEAT

EXCHANGER

3-WAY V ALVE

GAS SIDE

3-WAY V ALVE

OUTDOOR UNIT

4.1 LP-10091CL

• INDOOR UNIT

– 9 –

4. WIRING DIAGRAM

ROOM TH EVA TH Tmo

THERMISTOR FOR INDOOR TEMP. THERMISTOR FOR EVA TEMP. TERMINAL BLOCK(OUTDOOR)

FMiCiINDOOR FAN MOTOR

CAPACITOR FOR FAN(INDOOR)

RY4 Tmi

RELAY FOR COMP. TERMINAL BLOCK(INDOOR)

P/No.:3854AP2687J

BL BK BR OR RD

NOTE

SUB PCB ASM

MAIN PCB ASM

Tmi

INDOOR OUTDOOR

FIELD WIRING

6 5 4 3 2 1

Tmo

6 5 4 3 2 1

RY3

DISPLAY

PCB ASM

ROOM

TH

EVA

TH

Ci

BR

OR

CN1

CONNECT TO CONT ACT "R", "T" OF OUTDOOR TERMINAL BLOCK "A"(1ø,220V)

CN2

YL BL

RD

BK

WH

CN3

RY4

BK BL RD

YL

FMi

RY2 RY1

FUSE

(10A)

: : : : :

BLUE BLACK BROWN ORANGE RED

WH YL GN GN/YL

: : : :

WHITE YELLOW GREEN GREEN/YELLOW

NOTICE

1. Basic wiring is 3ø,3W,220V,60Hz.

2. For changing the running voltage to 380V, please change the wiring by the next steps

1st) Remove the "a" wires from the 'R' of the terminal block 'A' and connect the wire to the 'N' of the terminal block 'A'.

2nd) Remove the "b" wire from the '2' of 52C and connect the wire to the 'N' of the terminal block 'A'.

3rd) Change the compressor wires like an example.

4rd) For setting the E.O.C.R current

FIELD WIRING 380V WIRING 220V WIRING

TERMINAL BLOCK 'A'

3ø 3W

220V 60Hz

POWER SUPPLY

3ø 4W

380V 60Hz

POWER SUPPLY

Co1

FMo1 FMo2

COMP

U

Z

V

W

X

Y

Co2

BK

WH

BK

TmiTmo

1 2 3 4 5 6

BK

RD

WH

12345631

B

A

32

L1 L2

Tb

Ta

YL

BR BK

OR YL

BR BK

OR

Tc

OR

BK

WH

FUSE(5A)

FUSE(5A

)

RD

WH

BK

RD

BL

BK

51C

63L

BL

CH

WH

RD

OR

52C

b

a

R S T N

BL BK BR

FMo1,2 Co1,2

OUTDOOR FAN MOTOR RUN CAPACITOR FOR FAN

(

OUTDOOR

)

63LCHLOW PRESSURE SWITCH

CRANKCASE HEATER

51C 52C

EOCR(COMP.

)

MAGNETIC CONTACTOR

Tmo Tmi

P/NO ; 3854AP2687K

TERMINAL BLOCK(OUTDOOR) TERMINAL BLOCK(INDOOR)

BLUE BLACK BROWN

: : :

OR RD WH

ORANGE RED WHITE

: : :

YL GN GN/YL

YELLOW GREEN GREEN/YELLOW

: : :

NOTE

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A

) 55 40

Time(sec.

) 5 5

3ø,3 wires,220V.

U

XY

Z

XY

Z

V

W

UV

W

3ø,4 wires,380V.

OUTDOOR INDOOR

• OUTDOOR UNIT (LP-10091CL/XL)

– 10 –

4.2 LP-10091XL

• INDOOR UNIT

1. The basic wiring of this product is 3Ø,220V

2. If you want to change the runnning voltage to 380V, change the wiring of electric heater and outdoor unit.

EHCiELECTRIC HEATER

CAPACITOR FOR FAN(INDOOR

)

FMi Tmi

INDOOR FAN MOTOR TERMINAL BLOCK(INDOOR

)

POWER SUPPLY

3Ø,220V,60Hz

(3Ø,380V,60Hz)

EH

ROOM

TH

EVA

TH

FMi

Tmi

6 5 4 3 2 1

THERMAL FUSE

CONNECT TO OUTDOOR UNIT

RD

CN1

BR

OR BK BL RD

YL

DISPLAY

PCB ASM

CN2

CN3

FUSE

(10A)

RY3 RY2 RY1

BK

RDRD

26S1

26S2

RD

BK BK

YL

CONNECT TO CONTA CT

"R","N" OF OUTDOOR

TERMINAL BLOCK "Tmo1"

(1Ø, 220V, 60Hz)

NOTE

BL BK BR OR

BLUE BLAKC BROWN ORANGE

: : : :

RD WH YL GN/YL

RED WHITE YELLOW GREEN/YELLOW

: : : :

BL

BK

Ci

RY3

RY6

BK BK

BK

MAIN PCB ASM

SUB PCB ASM

WH BK

RD WH BK

P/No.:3854AP2687P

26S1,2 RY6

RY3

BIMETAL SWITCH FOR HEATER RELAY FOR HEATER

RELAY FOR COMP.

ELECTRIC HEATER WIRING DIAGRAM

P/No,:3854AP2687Q

3ø, 220V 3ø, 380V

Thermal Fuse (144˚C,16A,4EA)

1. Basic wiring is 3ø,220V

2. For changing the running voltage to 380V, please change the electric heater wires like an example.

3. The cross-sectional area of conductors for power supply must be over 14.0 mm

2

.

• ELECTRIC HEATER

– 11 –

4.3 LP-15091CL

• INDOOR UNIT

P/NO: 3854A20026A

NOTE

TD

Ci1,2

FMi1,2

Tmi

THi

Ry4

5 SECOND DELAY TIMER CAPACITOR(INDOOR)

WIRING DIAGRAM

FMi1

BR

RY3 RY2 RY1

FUSE

(250V/20A)

SUB PCB ASM

YL

BLBK OR BLBK OR

Ci1

BR

CN1

CN2

CN3

RY4

RD

BL

YL

TD

Tmi

6 5 4 3 2 1

WH BK

RD

CONNECT TO OUTDOOR UNIT #1

CONNECT TO OUTDOOR UNIT #2

CONNECT TO CONTA CT "R","N" OF OUTDOOR #1 TERMINAL BLOCK "A"

WH BK

3 2 1

DISPLAY

PCB ASM

BK

MAIN PCB ASM

BK

YL

Ci2

THI

FMi2

INDOOR FAN MOTOR TERMINAL BLOCK(INDOOR)

THERMISTOR FOR INDOOR TEMP. RELAY FOR COMP.

BL BK BR OR RD

BLUE BLACK BROWN ORANGE RED

: : : : :

WH YL GN GN/YL

WHITE YELLOW GREEN GREEN/YELLOW

: : : :

( Caution )

1. Basic wiring is 3ø,4wires,380V.

2. For changing the running voltage to 220V. please change the wiring by the next steps

1st) Remove the "a" wires from the "N" of Tmo1(Outdoor unit #1,2),and connect the wire to the "R" of Tmo1(Outdoor unit #1,2)

2nd) Remove the "b"wire from Tmo1(Outdoor unit #1,2), and connect the wire to the "1" of 52C

3rd) Change the compressor wires like an example.

U

X

Y

V

3ø,4 wires,380V.

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A)

35

24.2

Time(sec.)

5 5

3ø,3 wires,220V.

W

Z

U

X

Y

V

W

Z

3. For setting the E.O.C.R current

4. Check list before test run 1st) Reconfirm the wiring of compressor and motor of indoor unit 2nd) Fasten the screw of "Tmo1" one more.

NOTE

CH CO1,2 F1,2 FMo1,2 51C Tmi Tmo1,2 52C 63H 63L

CRANKCASE HEATER CAPACITOR FOR FAN FUSE OUTDOOR FAN MOTOR E.O.C.R FOR COMPRESSOR TERMINAL BLOCK(INDOOR) TERMINAL BLOCK(OUTDOOR) MAGNATIC CONTACTOR FOR COMP. HIGH PRESSURE SWITCH LOW PRESSURE SWITCH

NOTE

BL BK BR OR GN/YL

: : : : :

BLUE BLACK BROWN ORANGE GREEN/YELLOW

RD WH YL GN

: : : :

RED WHITE YELLOW GREEN

FMo1 FMo2

3ø,4WIRES 380V 60Hz POWER SUPPLY

Tmo1

OR

YL BR OR BK YL BR OR BK

RD

BK

WH

F2

F1

BK

13531

24632

B

A

BK

TO "Tmi 1,2" OF INDOOR UNIT

RD

WH

BK

BL

RD

RDWHBK

COMPRESSOR

L1L2

BK

BK WH RD

WH

U

V

W

X

Y

Z

Tb Ta

Tc

Co1

OUTDOOR #1

OUTDOOR #2

b

a

Co2

52C

63H

51C

Tmo2

CONNECT TO INDOOR UNIT

1 2 3 4 5 6

63L

3ø,3WIRES 220V 60Hz POWER SUPPLY

RSTN

Tmo1

OR

YL BR OR BK YL BR OR BK

RD

BK

WH

F2

F1

BK

13531

24632

B

A

BK

RD

WH

BK

BL

RD

RDWHBK

COMPRESSOR

L1L2

BK

BK WH

WH

CH

BK

CH

BK

U

V

W

X

Y

Z

Tb Ta

Tc

Co1

b

a

Co2

52C

63H

51C

Tmo2

T o"4"of Tmi

(Indoor unit)

1 2 3 4 5 6

63L

RSTN

OUTDOOR ELECTRIC CIRCUIT

P/NO: 3854A20026B

• OUTDOOR UNIT

– 12 –

4.4 LP-15091XL

• INDOOR UNIT

P/NO: 3854A20026E

NOTE

TD

Ci1,2

FMi1,2

Tmi

THi

RY1,2,3

5 SECOND DELAY TIMER CAPACITOR(INDOOR)

WIRING DIAGRAM

INDOOR FAN MOTOR TERMINAL BLOCK(INDOOR)

THERMISTOR FOR INDOOR TEMP. RELAY FOR Fmi1,2

Ry4 Ry5

RELAY FOR COMP. RELAY FOR HEATER

BL BK BR OR

BLUE BLACK BROWN ORANGE

: : : :

RD WH YL GN/YL

RED WHITE YELLOW GREEN/YELLOW

: : : :

1. The basic wiring of this product is 3ø,220V

2. If you want to change the running voltage to 380V change the wiring of electric heater and outdoor unit

3. The cross-sectional area of conductors for power supply(electric heater) must be over 38mm

2

POWER SUPPLY

3ø,220V,60Hz

(3ø,380V,60Hz)

CONNECT TO OUTDOOR UNIT #1

CONNECT TO OUTDOOR UNIT #2

CONNECT TO CONT ACT "R","N" OF Tmo1 (OUTDOOR #1) (1ø, 220V)

BK

RD

YL

CN3

CN2

RY5

TD

RD

BR

YL

BK ORBL BK ORBL

RY3 RY2 RY1

FUSE

(250V/20A)

BR

YL

WH BK

RD WH BK

3 2 1

RY4

CN1

DISPLAY

PCB ASM

BL

BK

SUB PCB ASM

Ci2

FMi2FMi1

Ci1

THi

BK

6 5 4 3 2 1

BL

Tmi

MAIN PCB ASM

R S T

BK

BR BL

4 3 2 1

52H1

52H2

WH RD

BK

BL BR

EH

RD RD

THERMAL PROTECTOR

THERMAL FUSE

6

5

4

10

11

12

THERMAL FUSE

EH

THERMAL FUSE

3

7

8

9

2

1

THERMAL FUSE

THERMAL PROTECTOR

RD

1 2 3

WH

RD

Field Wiring

( Caution )

1. Basic wiring is 3ø,3wires,220V.

2. For changing the running voltage to 380V. please change the wiring by the next steps

1st) Remove the "a" wires from the "R" of Tmo1(Outdoor unit #1,2),and connect the wire to the "N" of Tmo1(Outdoor unit #1,2).

2nd) Remove the "b"wire from "1" of 52C (Outdoor unit #1,2), and connect the wire to "N" of Tmo1

3rd) Change the compressor wires like an example.

U

X

Y

V

W

Z

U

X

Y

V

W

Z

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A)

35

24.2

Time(sec.)

5 5

3. For setting the E.O.C.R current

4. Check list before test run 1st) Reconfirm the wiring of compressor

and motor of indoor unit 2nd) Fasten the screw of "Tmo1" one more.

NOTE

CH CO1,2 F1,2 FMo1,2 51C Tmi Tmo1,2 52C 63H 63L

CRANKCASE HEATER CAPACITOR FOR FAN FUSE OUTDOOR FAN MOTOR E.O.C.R FOR COMPRESSOR TERMINAL BLOCK(INDOOR) TERMINAL BLOCK(OUTDOOR) MAGNATIC CONTACTOR FOR COMP. HIGH PRESSURE SWITCH LOW PRESSURE SWITCH

NOTE

BL BK BR OR GN/YL

: : : : :

BLUE BLACK BROWN ORANGE GREEN/YELLOW

RD WH YL GN

: : : :

RED WHITE YELLOW GREEN

OUTDOOR #1

FMo1 FMo2

OUTDOOR #2

OUTDOOR ELECTRIC CIRCUIT

P/NO: 3854A20026F

3ø,3 wires,220V. 3ø,4 wires,380V.

3ø,4WIRES 380V 60Hz POWER SUPPLY

Tmo1

OR

YL BR OR BK YL BR OR BK

RD

BK

WH

F2

F1

BK BK

13531

246 32

B

A

TO "Tmi 1,2" OF INDOOR UNIT

RD WH

BK

BL

RD

RDWHBK

COMPRESSOR

L1L2

BK

BK WH RD

WH

U

V

W

X

Y

Z

Tb

Ta Tc

Co1

b

a

Co2

52C

63H

51C

Tmo2

CONNECT TO INDOOR UNIT

1 2 3 4 5 6

63L

3ø,3WIRES 220V 60Hz POWER SUPPLY

RSTN

CH

BK

T o"4"of Tmi

(Indoor unit)

Tmo1

OR

YL BR OR BK YL BR OR BK

RD

BK

WH

F2

F1

BK BK

13531

246 32

B

A

RD WH

BK

BL

RD

RDWHBK

COMPRESSOR

L1L2

BK

WH

U

V

W

X

Y

Tb

Ta

Tc

Co1

b

a

Co2

52C

63H

51C

Tmo2

1 2 3 4 5 6

63L

RSTN

CH

BK

4th) Change the electric heater wires.

• OUTDOOR UNIT

– 13 –

4.5 LP-20091CL

• INDOOR UNIT

P/NO: 3854A20026C

NOTE

Power supply

3ø,220V,60Hz

3ø,380V,60Hz

Current(A)

7

5

Time(sec.)

5

RDBLBKWHGY

CS

FMi

GL1

GL2THTmi

23H,L

52FiCNTD

MODE SELECT SWITCH

INDOOR FAN MOTOR

LOW COOL OPERATION LAMP

HIGH COOL OPERATION LAMP

E.O.C.R FOR FMi

TERMINAL BLOCK(INDOOR)

THERMOSTAT

MAGNATIC CONTACTOR FOR FMi

CONNECTOR(9P)

5 SEC. DELAY TIEMR

RED

BLUE

BLACK

WHITE

GRAY

:::::

BRVTGNORGN/YL

FIELD WIRING

CONNECT TO OUTDOOR #1

TERMINAL BLOCK 'Tmo2'

CONNECT TO OUTDOOR #2

TERMINAL BLOCK 'Tmo2'

CONNECT TO CONTACT 'R','S','T' OF

OUTDOOR #2 TERMINAL BLOCK 'Tmo1'

BROWN

VIOLET

GREEN

ORANGE

GREEN/YELLOW

:::: :

3ø,4 wires,380V. 3ø,3 wires,220V.

1

(

U

)

1

(

U

)

6

(

Y

)

2

(

V

)

4

(

Z

)

3

(

W

)

5

(

X

)

2

(

V

)

3

(

W

)

4

(

Z

)

5

(

X

)

6

(

Y

)

1

2

3

4

1

2

3

4

INDOOR ELECTRIC CIRCUIT

CS

GN

RD BR

23L

23H

CN

BK

WH

BK

BR

246 A

135

B

VT

WH

GN WH

BL

WH

YL

GN

12345678910

BL BK GY

RD

GY

TD

Tmi

52Fi

WH

GY

GL1 GL2

BK

FMi

TH

1

L1 L2

Tb

Ta

Tc

CT CT

2

3

6

5

4

1234

WH WH

YL

1

24 6

3

2

1

6

5

4

VT

8

( Caution )

1. Basic wiring is 3ø,4wires,380V.

2. For changing the running voltage to 220V,

please change the wiring by the next steps

1st) Change the motor(Indoor unit) wires

like below

2nd) For setting the E.O.C.R current

4

4 1567

567

– 14 –

P/NO: 3854A20026D

OUTDOOR ELECTRIC CIRCUIT

OUTDOOR UNIT#1

OUTDOOR UNIT#2

W

Power supply

3ø,220V,60Hz

3ø,380V,60Hz

Current(A)

55

40

Time(sec.)

5

Power supply

3ø,220V,60Hz

3ø,380V,60Hz

Current(A)

7

5

Time(sec.)

5

( Caution )

1. Basic wiring is 3ø,4wires,380V.

2. For changing the running voltage to 220V,

please change the wiring by the next steps

1st) Remove the "a" wires from the "N" of

Tmo1(Outdoor unit #1), and connect the

wire to the "R" of Tmo1(Outdoor unit #1).

2nd) Remove the "b"wire from Tmo1(Outdoor

unit #1,2), and connect the wire to the

"1" of 52C

3rd) Change the compressor

wires like an example.

4th) Change the motor(Indoor Unit) wires

like below

3. Remove F1,F2 of Outdoor unit #2.

4. For setting the E.O.C.R current

1st) E.O.C.R for compressor

2nd) E.O.C.R for motor(Indoor unit)

5. Check list before test run

1st) Reconfirm the wiring of compressor

and motor of indoor unit

2nd) Fasten the screw of "Tmo1" one more.

3ø,4 wires,380V.

U

X

Y

Z

V

U

X

Y

Z

V

W

3ø,3 wires,220V.

3ø,4 wires,380V. 3ø,3 wires,220V.

NOTE

RDBLBK

WH

RED

BLUE

BLACK

WHITE

:::

:

BRGNOR

GN/YL

FIELD WIRING

BK

L1 L2

CT CT

Tb

Ta

Tc

BK

WH

BK

RD

BK

TO 'Tmi' OF INDOOR UNIT

1234

TO 'Tmi' OF INDOOR UNIT

15674

WH

WH RD

RD

3 MIN.

DELAY

P.C. B YL

BL

RD

BK

CH

U

COMPRESSOR

V

W

X

Y

Z

WHBK

RD

WH

RSTN

RD

WH

BL

(1st)

220V 24V

(2nd)

a

b

OR

Tmo1

CO1 CO2

3ø,3WIRES

220V 60Hz

POWER SUPPLY

FMo

1

52C

51C

63L 63H

Tmo2

12345678910

F2

F1

TRANS

FMo

2

3ø,4WIRES

380V 60Hz

POWER SUPPLY

BK

L1 L2

CT CT

Tb

Ta

Tc

BK

WH

RD

BK

RD

BK

WH

WH RD

RD

3 MIN.

DELAY

P.C. B YL

BL

RD

BK

CH

U

COMPRESSOR

V

W

X

Y

Z

WHBK

RD

WH

RSTN

RD

WH

BL

(1st)

220V 24V

(2nd)

b

OR

135

A

B

246

15

16

135

A

B

246

15

16

CO1 CO2

TO '52Fi' OF

INDOOR UNIT

FMo

1

52C

51C

63L 63H

Tmo2

12345678910

F2

F1

TRANS

FMo

2

BROWN

GREEN

ORANGE

GREEN/YELLOW

:::

:

CH

CO1,2CSF1,2

FMi

FMo1,2

GL1

GL2TDTH

51C

Tmo1,2

23H,L

52C

52Fi

63H

63L

CRANKCASE HEATER

CAPACITOR FOR FAN

MODE SWITCH

FUSE

INDOOR FAN MOTOR

OUTDOOR FAN MOTOR

LOW COOL LAMP

HIGH COOL LAMP

5 SEC. DELAY TIMER

E.O.C.R FOR FMi

E.O.C.R FOR COMPRESSOR

TERMINAL BLOCK(OUTDOOR)

THERMOSTAT

MAGNATIC CONTACTOR FOR COMP.

MAGNATIC CONTACTOR FOR FMi

HIGH PRESSURE SWITCH

LOW PRESSURE SWITCH

1

(

U

)

1

(

U

)

6

(

Y

)

2

(

V

)

4

(

Z

)

3

(

W

)

5

(

X

)

2

(

V

)

3

(

W

)

4

(

Z

)

5

(

X

)

6

(

Y

)

123

4

123

4

• OUTDOOR UNIT

– 15 –

4.6 LP-20091XL

• INDOOR UNIT

FIELD WIRING

INDOOR ELECTRIC CIRCUIT

NOTE

RD BL BK WH GY

RED BLUE BLACK WHITE GRAY

: : : : :

BR VT GN OR GN/YL

BROWN VIOLET GREEN ORANGE GREEN/YELLOW

: : : : :

CS

23H,L

CN

Tmi

MODE SELECT SWITCH THERMOSTAT CONNECTOR(4P,9P) TERMINAL BLOCK(INDOOR)

TD RL1 GL2 52R

TH

52Fi

FMi

52H1,2

5 SEC. DELAY TIMER HEATING LAMP TD LAMP RELAY FOR HEATING

E.O.C.R FOR FMi MAGNATIC CONTACTOR FOR FMi INDOOR FAN MOTOR MAGNATIC CONTACTOR FOR E/HEATER

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A)

7 5

Time(sec.)

5 5

3ø,4 wires,380V. 3ø,3 wires,220V.

1(U

)

1(U

)

6(Y

)

2(V

)

4(Z

)

3(W

)

5(X

)

2(V

)

3(W

)

4(Z

)

5(X

)

6(Y

)

1 2 3 4

( Caution )

1. Basic wiring is 3ø,3wires,220V.

2. For changing the running voltage to 380V, please change the wiring by the next steps

1st) Change the motor(Indoor unit) wires like below

2nd) For setting the E.O.C.R current

3rd) Change the Electric heater wires like motor

3. The cross-sectional area of conductors for power supply(electric heater) must be over 50mm

2

CONNECT TO OUTDOOR #2 TERMINAL BLOCK 'Tmo2'

CONNECT TO OUTDOOR #1 TERMINAL BLOCK 'Tmo2'

CONNECT TO CONTACT "R","S","T" OF OUTDOOR #2 TERMINAL BLCOK 'Tmo1'

POWER SUPPLY

3Ø,220V,60Hz

(3ø,380V,60Hz)

R S

T

1234

Tmi

WH

BK

WH

BKBL

GN

GY

CN

GY

YL BR WH

78

12 34

56

WH

BR

YL

A

246

135

B

BK GN

VT

WH

52R

52Fi

TH

TD

BK

L1 L2

CT

Tb Ta

Tc

CT

WH

1

2

3

6

5

4

FMi

1234

BL

BK WH RD

BL BR

BK RD

RD

123

BK

THERMAL FUSE

1

6

5

4

10

11

12

2 3

9

8

7

THERMAL FUSE THERMAL FUSE

THERMAL FUSE

THERMAL PROTECTOR

THERMAL FUSE THERMAL FUSE

EH

WH

RD

BR BL

52H1

P/No.: 3854A20026G

BK

YL

2

3

1

CN

BL

RD

BK

BR

RD

GN

WH

BK

WH

VT

BL

3

1

6

5

4

2

CS

RL1

52H2

23L

23H

COOLING

HEATING

WH

RD

BL

RDRD

GL2

5678910

4 1567

4567

4 3 2 1

– 16 –

• OUTDOOR UNIT

OUTDOOR UNIT#1

OUTDOOR UNIT#2

NOTE

RD BL BK WH

RED BLUE BLACK WHITE

: : : :

BR GN OR GN/YL

FIELD WIRING

BROWN GREEN ORANGE GREEN/YELLOW

: : : :

W

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A)

55 40

Time(sec.)

5 5

Power supply 3ø,220V,60Hz 3ø,380V,60Hz

Current(A)

7 5

Time(sec.)

5 5

( Caution )

1. Basic wiring is 3ø,3wires,220V.

2. For changing the running voltage to 380V, please change the wiring by the next steps 1st) Remove the "a" wires from the "R" of Tmo1(Outdoor unit #1), and connect the wire to the "N" of Tmo1(Outdoor unit #1). 2nd) Remove the "b"wire from 52C(Outdoor unit #1,2), and connect the wire to the "N" of Tmo1(Outdoor unit #1). 3rd) Change the compressor wires like an example.

4th) Change the motor(Indoor Unit) wires like below

5th) Change the electric heater wires.

3. Remove F1,F2 of Outdoor unit #2.

4. For setting the E.O.C.R current 1st) E.O.C.R for compressor

2nd) E.O.C.R for motor(Indoor unit)

5. Check list before test run 1st) Reconfirm the wiring of compressor and motor of indoor unit 2nd) Fasten the screw of "Tmo1" one more.

3ø,3 wires,220V.

U

X

Y Z

V

U

X

Y

Z

V

W

3ø,4 wires,380V.

NOTE

CH CO1,2 CS F1,2 FMi FMo1,2 GL1 GL2 TD TH 51C Tmo1,2 23H,L 52C 52Fi 63L

CRANKCASE HEATER CAPACITOR FOR FAN MODE SWITCH FUSE INDOOR FAN MOTOR OUTDOOR FAN MOTOR LOW COOL LAMP HIGH COOL LAMP 5 SEC. DELAY TIMER E.O.C.R FOR FMi E.O.C.R FOR COMPRESSOR TERMINAL BLOCK(OUTDOOR) THERMOSTAT MAGNATIC CONTACTOR FOR COMP. MAGNATIC CONTACTOR FOR FMi LOW PRESSURE SWITCH

1(U

)

2(V

)

3(W

)

4(Z

)

5(X

)

6(Y

)

1 2 3 4

3ø,3 wires,220V.

1(U

)

6(Y

)

2(V

)

4(Z

)

3(W

)

5(X

)

1 2 3 4

P/NO: 3854A20026H

OUTDOOR ELECTRIC CIRCUIT

BK

L1 L2

CT CT

Tb

Ta

Tc

BK

WH

BK

RD

BK

BK BK

TO 'Tmi' OF INDOOR UNIT

1234

TO 'Tmi' OF INDOOR UNIT

15674

WH

RD

RD RD

RD

3 MIN. DELAY P.C. B

YL BL

RD

CH CH

U

COMPRESSOR

V

W

X

Y

Z

WHBK

RD

WH

RSTN

RD

WH

BL

(1st)

220V 24V

(2nd)

a

b

OR

Tmo1

CO1 CO2

3ø,3WIRES 220V 60Hz POWER SUPPLY

FMo

1

52C

51C

63L

Tmo2

12345678910

F2

F1

TRANS

FMo

2

3ø,4WIRES 380V 60Hz POWER SUPPLY

135

A

B

246

15

16

TO '52Fi' OF INDOOR UNIT

BK

L1 L2

CT CT

Tb

Ta

Tc

BK

WH

BK

RD

BK

BK BK

WH

RD

RD RD

RD

3 MIN. DELAY P.C. B

YL BL

RD

CH CH

U

COMPRESSOR

V

W

X

Y

Z

WHBK

RD

WH

RSTN

RD

WH

BL

(1st)

220V 24V

(2nd)

b

OR

Tmo1

CO1 CO2

FMo

1

52C

51C

63L

Tmo2

12345678910

F2

F1

TRANS

FMo

2

135

A

B

246

15

16

– 17 –

5. OPERATION DETAILS

(1) The function of main control

1. Time Delay Safety Control

• 3min

...

The compressor is ceased for 3 minutes to balance the pressure in the refrigeration cycle.

(Protection of compressor)

• 3sec

...

The indoor fan is ceased for 3 seconds to prevent relay noise. (Protection of fan relay and micro chip)

2. Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the controller and the operation diagram is as following.

Intake Air temp.

Setting Temp. +1°C

(Compressor ON)

Setting Temp. -1°C (Compressor OFF)

Indoor Fan Speed

Selecting

fan speed

Selecting

fan speed

Selecting

fan speed

Selecting

fan speed

Selecting

fan speed

3 minutes

More than

3 minutes

More than

Compressor ON OFF ON OFF ON

– 18 –

4. Protection of the evaporator pipe from frosting(LP-10091CL/XL)

• Compressor and outdoor fan stop when indoor pipe temperature is below -2 °C and restart at the pipe temperature is above 12°C.

5. Off Timer Function (10K, 15K)

This function is to set the time of stopping the unit operation. The procedure is as the following.

1st: Press the timer set button on the Remocon. 2nd:

The buzzer sounds and then the display window shows the Off-Time to be set as 1:00→

...

→ 7:00 →0:00.

- The Off-Time is shifted as the following by each press.

- If you select '0:00', the Off-Timer function will be cancelled.

- During Off-Timer Operation, if you repress the timer set button, the rest time will be displayed.

1:00 2:00 3:00 4:00 5:00 6:00 7:00 0:00

Intake Air T emp.

Indoor Fan Speed

LOW

Selecting

fan speed

Selecting

fan speed

LOW LOW LOW LOW

Compressor OFFON ONON OFF OFF ON

LOW

OFF

Setting Temp. +2°C

(Compressor ON)

Setting Temp. -1°C

(Compresso OFF)

Operation

Cooling

operation

Dry operation

3 min. 3 min.

10 min.

maximum

7 min.

maximum

10 min.

3. Soft Dry Operation Mode

• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 2°C, the compressor OFF temperature is the setting temperature minus 1°C.

• When the room temperature rises over the compressor ON temperature, the operation mode is switched to the Cooling mode.

• When the room temperature falls between the compressor ON temperature and OFF temperature, the operation mode is switched to the Soft Dry Operation.

• The operation diagram is shown below.

– 19 –

6. Alarm mode display / only displayed while operating. (10K, 15K)

CCHH 00

: The sensor for sensing room temperature is open or short.

CCHH 22

: Some keys of the display are out of order or short.

7. Function for Air-Circulation Air-Flow

• If you press Fan operation button, indoor Fan is only operating without compressor working.

• On Air-flow mode, temperature setting is not adjustable.

• Fan speed is adjustable by pressing Fan-speed button.

8. Function for Heater

1) On the set off mode, Heater and indoor fan operate without compressor working by pressing Heater ON/OFF button on the set.

2) Heater ON temperature is the setting temperature minus 1˚C, Heater OFF temperature is the setting temperature plus 1˚C.

3) On Heater ON, indoor fan is set to operate at Low-speed for 30 seconds and then operate at the setting speed. On heater OFF, indoor fan stops after operating at Low-speed for 30 seconds.(Except : LP-20091XL)

4) On Heater mode, changing mode is not adjustable

5) On heater ON, pressing Heater ON/OFF button or Start/Stop button stops the set after indoor fan operates at Low-speed for 30 seconds.(Except : LP-20091XL)

9. Child Lock function

The procedure is as the following 1st: Press the 2 buttons of the temperature control simultaneously, to raise-to lower on the Display Panel of the

product for more 3 seconds.

2nd: The buzzer sounds and then the window of Display Panel shows

LLOOCC

(LOC) mark.

3rd: To release this function, the reverse again the operating procedure could be done. ❃ During this function is operating, any buttons of Display Panel don't work.

10. AUTO RESTART

In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions.

– 20 –

6. Installation

5cm

A

B

Indoor unit

Outdoor unit

50cm

150cm

5cm

40cm

100cm

6.1 Installation of Indoor, Outdoor unit

1) Selection of the best location

① Indoor unit

② Outdoor unit

③ Piping length and the elevation

• 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 con-

sideration.

• 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 discharged hot air.

• Ensure the space indicated by arrows from the wall,

ceiling, fence, or other obstacles.

11/10" 1/2" 40 25

1" 5/8" 40 25

11/10" 5/8" 40 25

~100K

(BTU/h)

~150K

(BTU/h)

~200K

(BTU/h)

PIPE SIZE

MODEL

GAS SIDE LIQUID SIDE

Max.

Length

A (m)

Max.

Elevation

B (m)

– 21 –

2) Indoor Unit installation

󱃦 The mounting floor should be strong and solid

enough to prevent it from vibration.

󱃧 Drill the piping hole with 70mm diameter hole-core

drill at either the right or the left of indoor unit. The hole should be sightly slant to the outdoor side.

3) Outdoor unit Installation

󱃦 Install the outdoor unit on the concrete or any solid

base securely and horizontally.

󱃧 If there is any vibration transmitted to the building,

mount the rubber underneath the outdoor unit.

4) Refrigerant amount

Before shipment, this air conditioner is filled with the rated amount of refrigerant including additional amount required for air-purging, subject to 5m piping length. (The rated amount of refrigerant is indicated on the name plate.) But when the piping length exceeds 5 meters, additional charge is required according to the following table.

(Unit: g)

Example) 72K~80K In case of 10m long pipe(one-way), the amount of refrigerant to be replenished is:

(10 - 5) x 50 = 250g

200mm

70mm

90mm

Wall

Core Drill

MODEL

~100K

(BUT/h)

~150K

(BUT/h)

~200K

(BUT/h)

REFRIGERANT CHARGE

50 per 1m

50 x 2 per 1m

– 22 –

No. Installation works Descriptions

1 Preparation of tools and installation parts Preparation of installation 2 Flaring the pipes To insert the flare nuts, mounted on the

connection parts of both indoor and

outdoor unit, onto the copper pipes. 3 Pipe bending To reduce the flow resistance of refrigerant. 4 Connection of installation parts Connection of long piping

(elbows, socket etc) 5 Tighten the flare nut (outdoor) Connecting the pipings of the outdoor unit. 6 Blowing the pipings To remove dust and scale in working. 7 Tighten the flare nut (indoor) Connecting the pipings of the indoor unit. 8 Check a gas-leakage of the connecting

part of the pipings. 9 Air purging of the piping and indoor unit The air which contains moisture and which

remains in the refrigeration cycle may cause a malfunction on the compressor

10 Open the 3-way (liquid side) and

3-way (gas side) valves.

11 Form the pipings To prevent heat loss and sweat 12 Checking the drainage (indoor unit) To ensure if water flow drain hose of indoor unit. 13 Connecting the cable between outdoor Preparation of the operating

and indoor unit

14 Connecting the main cable to outdoor unit 15 Supply the power to the crankcase heater To prevent the liquid back to the compressor.

(Before the operating the unit) (Heat pump only)

16 Cooling operation

(Use the remote control or display of the

indoor unit)

6.2 Installation Method

1) Procedure

– 23 –

2) Preparation of installation parts and tools

No. Installation Parts, Tools Use

1 Pipe cutter (MAX 35mm Copper pipe) Cutting the pipings 2 Remear Remove burrs from cut edges of pipes. 3 Wrench (H5, H4 hexagonal wrench) To open the service valve 4 Pipe bender Bending the pipings 5 Leak detector Check a gas-leakage of connecting part

of the pipings

6 Manifold gauge

To measure the pressure, to charge the refrigerant 7 Charge-nipple To connect the bombe 8 Vacuum pump To remove the air in the pipe. 9 Charge cylinder balance To measure the refrigerant amount

10 Bombe (Freon-22) Gas charge

Air purge

Cleaning the pipe

11 Spanner To tighten the connecting parts of the pipings 12 Monkey spanner

13 Driver( , ) 14 Benchi (150mm) Cutting the wires 15 Tapeline To measure the length 16 Core drill

To make holes through the concrete wall and blocks

17 Voltmeter, Amperemeter, Clampmeter To measure the current and voltage 18 Insulation resistance tester To measure the insulation resistance 19 Glass thermometer

To measure the intake and outlet air temperature of the indoor unit

20 Copper tubes To use the connecting pipings 21 Insulation material To cover the connecting pipings 22 Tape To finish the connecting pipings 23 Electrical Leakage Breaker To shut off the main power 24 Cable

To connect the cable from outdoor unit to indoor unit

25 Drain hose sockets, elbows To remote the condensing water

– 24 –

2) Connection of piping

① Move the indoor tubing and drain hose to the hole

• Remove tubing holder and pull the tubing out of the chassis.

② Replace the tubing holder into original position ③ Route the tubing and the drain hose staight backwards. ④ Insert the connecting cable into the indoor unit through the hole.

• Do not connect the cable to the indoor unit

• Make a small loop with the cable for easy connection later.

⑤ Tape the tubing and the connecting cable. ⑥ Indoor unit installation. ⑦ Connecting the pipings to the indoor unit.

• Align the center of the pipings and suffciently tighten the flare nut with fingers.

• Finally, tighten the flare nut with troque wrench until the wrench clicks. When tightening the flare nut with troque wrench, ensure the direction for tightening follows the arrow on the wrench.

6.3 Piping 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 pipe length.

② Remove burrs.

• Remove burrs from cut edges of pipes.

• Turn the pipe end down to avoid the metal powder

entering the pipe.

Caution:

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

90°

Pipe cutter

Slanted Rough

Pipe

Point down

Reamer

LG LP-10091CL/XL, LP-15091CL/XL, LP-20091CL/XL Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual