LG LM-3061H2L/M User manual

Multi Type Room Air Conditioner

SERVICE MANUAL

MODEL: LM-3061H2L/M

LM-3061B2L

LM-3061C2L/M

Functions...................................................................................................................................... 3

Product Specifications................................................................................................................ 5

Dimensions....................................................................................................................................7

Refrigeration Cycle Diagram....................................................................................................... 9

Wiring Diagram .......................................................................................................................... 10

Operation Details ....................................................................................................................... 11

Display Function........................................................................................................................ 17

Self-diagnosis Function ............................................................................................................ 17

Installation.................................................................................................................................. 18

Disassembly of the parts(Indoor unit) ..................................................................................... 37

2-way, 3-way Valve ..................................................................................................................... 39

Cycle Troubleshooting Guide ....................................................................................................43

Electronic Parts Troubleshooting Guide.................................................................................. 44

Electronic Control Device ......................................................................................................... 51

Schematic Diagram.................................................................................................................... 53

Exploded View and Replacement Parts List............................................................................ 56

- 2 -

Contents

- 3 -

Functions

• Room temperature sensor. (THERMISTOR)

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

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

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low, Chaos

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Deice Mode(for Heat pump model)

--- 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)

Health Dehumidification operation

• Both the indoor and outdoor fan

stops during deicing.

• The indoor fan stops until the

evaporator piping temperature will be

reached at 28°C.

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

Airflow Direction Control

OUT

DOOR

Deice (defrost) control (Heating)

Hot-start Control (Heating)

- 4 -

Remote Controller

JET COOL

Healthy Dehumidification Operation Mode

( )

Operation Mode Selection

(Cooling

model only) (Heating

model only)

Cooling Operation Mode ( ) Heating Operation Mode ( )

Auto Operation Mode ( )

Sleep Operation

Fan Operation Mode

Room, Temperature Display

Setting the Time or Timer

Airflow Direction Control

Operation ON/OFF

Temperature Setting

TEMPERATURE LOWHIGH

Timer Selection

ON OFF

Timer Setting

SET

Timer Cancel

CANCEL

Reset

Fan Speed Selection

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

: (High: 39°C LOW : 11°C)

Down to 18°C

Up to 30°C

Cooling

: OFF, ON, OFF ON

: Cancel Sleep Mode, Timer ON or Timer OFF

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

: Fan Operates without cooling or heating.

Down to 16°C

Up to 30°C

Heating

- 5 -

Product Specifications

28,500(7,182) 17,500(4,410)11,000(2,772)

4.2 2.5 1.7

1Ø, 220-240V, 50Hz

Indoor 13 9

Outdoor 58

Indoor 44 +1 38+1

Outdoor 57 +1

3,050 1,950 1,250

2,750 1,850 1,100

13 8.5 5.5

12.5 8.2 4.8

9.3 9.0 8.8

3.0 2.8 2.9

Indoor 22 13

Outdoor 80

Indoor

1,080 x 314 x 181

888 x 287 x 170

Outdoor 870 x 800 x 320

Indoor 11 9

Outdoor 83

1,400 1,080

L.C.D Wireless

Liquid 1/4"(6.35)

Gas 1/2"(12.7)

Operation A-Unit Only

A-Unit + B-Unit B-Unit Only

Unit

Item

Cooling Capacity

Heating Capacity

Moisture Removal ℓ/h

Power Source ø, V, Hz

Air Circulation m3/min

Noise Level dB(A)

Input W

E.E.R. Btu/h.w

C.O.P. -

Motor Output W

Dimensions(W x H x D)

Net. Weight kg

Refrigerant(R-22) g

Airflow Direction Control(Up & Down)

Remocon Type

Service Valve

Sleeping Operation

Drain Hose

Cooling

Heating

Cooling

Heating

Cooling

Heating

Runnig

Current

Btu/h(kcal/h)

1. LM-3061H2L/M, LM-3061B2L

- 6 -

28,500(7,182) 17,500(4,410)11,000(2,772)

4.2 2.5 1.7

1Ø, 220-240V, 50Hz

Indoor 13.0 9.0

Outdoor 58

Indoor 44 +1 38+1

Outdoor 57 +1

3,050 1,950 1,250

13.0 8.5 5.5

9.3 9.0 8.8

Indoor 22 13

Outdoor 80

Indoor

1,080 x 314 x 181

888 x 287 x 170

Outdoor 870 x 800 x 320

Indoor 11.0 9.0

Outdoor 67

1,400 950

L.C.D Wireless

Liquid 1/4"(6.35)

Gas 1/2"(12.7)

Operation A-Unit Only

A-Unit + B-Unit B-Unit Only

Unit

Item

Cooling Capacity Btu/h(kcal/h)

Moisture Removal ℓ/h

Power Source ø, V, Hz

Air Circulation m3/min

Noise Level dB(A)

Input W

Running Current A

E.E.R. Btu/h.w

Motor Output W

Dimensions(W x H x D)

Net. Weight kg

Refrigerant(R-22)(at 7.5m)

Airflow Direction Control(Up & Down)

Remocon Type

Service Valve

Sleeping Operation

Drain Hose

2. LM-3061C2L/M

1. Indoor Unit

- 7 -

Dimensions

Installation plate

Tubing hole cover

Installation plate

W mm 1,080 888

H mm 314 287

D mm 181 170

18k 12k

MODEL

DIM

( 18k ) ( 12k )

- 8 -

L5L6 L7 L8

Gas side

3-way valve

Liquid side

2-way valve

L10L10L10

2. Outdoor Unit

W mm 870

H mm 800

D mm 320

L1 mm 370

L2 mm 25

L3 mm 775

L4 mm 25

L5 mm 546

L6 mm 160

L7 mm 160

L8 mm 64

L9 mm 76.5

L10 mm 50

LM-3061H2L/M, LM-3061B2L, LM-3061C2L/M

MODEL

DIM

- 9 -

Refrigeration Cycle Diagram

Indoor Unit Outdoor Unit

Heat

Exchanger

B-Unit

4- WAY

Valve-B Heat

Exchanger

Comp-B

2- WAY

Valve

3- WAY

Valve

Heat

Exchanger

A-Unit

4- WAY

Valve-A

Comp-A

2- WAY

Valve

3- WAY

Valve

Pipe Size (Diameter : inch)

Max.

piping length

(m)

Max.

piping elevation

(m)

Gas Liquid

1/2" 1/4" 10~15 5~7

ex) Capillary

Cooling & Deice

Heating

A-UNIT B-UNIT

CAPILLARY TUBE

LIQUID SIDE

2-WAY VALVE

GAS SIDE

3-WAY VALVE

HEAT

EXCHANGER

(EVAPORATOR)

HEAT

EXCHANGER

(CONDENSER)

COMPRESSOR

1. LM-3061H2L/M, LM-3061B2L(Cooling & Heating Model)

2. LM-3061C2L/M(Cooling Model)

3854A20023B

INDOOR WIRING DIAGRAM

CN-DISP1

CN-U/D

FUSE

AC250V/T2A

CN-TH

SSR

SH-CAPA.

CN-POWER CN-FAN

ZNR

THERMISTOR

FORCED

OPERATION

AUTO

RESTART

REMOTE

CONTROL

STEP

MOTOR

MAIN PCB

ASM

DISPLAY PCB ASM

TO OUTDOOR UNIT

PILLAR

TERMINAL

1(L)2(N)

OUTDOOR WIRING DIAGRAM

3854AP3911J

MAIN PCB ASSY

TO INDOOR UNIT

A-UNIT B-UNIT MAIN

POWER

TERMINAL

BLOCK

CN-TRANS

BK BK

BR BL

BL YL

BK BK

HCF

"A"

COMP

RBR

BK T/B2

T/B1

T/B3

GN/YL

MOTOR

433113 21

531 3 1

WH BK GN/YL

GN/YL

CN-COM

CN-TH1 CN-TH2

CN-POWER

CN-SV

RY9

RY3

RY2

RY1

RY10

CN-FANCN-COMP

CAPA.

FUSE T3.15A

THERMISTOR

TRANS-

FORMER

OLP

"B"

COMP

1(L) 1(L)2(N) 1(L) 2(N)2(N)

A 4-WAY

B 4-WAY

OPTION

3854A20023D

INDOOR WIRING DIAGRAM

CN-DISP1

CN-U/D

FUSE

AC250V/T2A

CN-TH1

SSR

SH-CAPA.

CN-TAB1

ZNR

CN-MOTOR

THERMISTOR

FORCED

OPERATION

AUTO

RESTART

REMOTE

CONTROL

STEP

MOTOR

MAIN PCB

ASM

DISPLAY PCB ASM

TO OUTDOOR UNIT

PILLAR

TERMINAL

GN/YL

1(L)2(N)

RY-COMP.

A-UNIT

TO INDOOR UNIT

OUTDOOR WIRING DIAGRAM

3854A20023Q

B-UNIT MAIN POWER

1(L) 2(N) 3 3 2(N) 1(L) 1(L) 2(N)

BK RD BL

RD POWER

RELAY

MOTOR YLBK

O.L.P

T/B 3

T/B 4

T/B 1 T/B 2

FCH

SWH

COMP

"B"

CAPACITOR

NC C

TERMINAL

BLOCK

GN/YL

COMP

"A"

CAPACITOR

- 10 -

Wiring Diagram

1. LM-3061H2L/M, LM-3061B2L

Indoor Unit Outdoor Unit

2. LM-3061C2L/M

Indoor Unit Outdoor Unit

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