LG LBNS3061BL User manual

Ceiling Duct Type

Air Conditioner

SERVICE MANUAL

MODELS: LBNS3061BL LBUS3061BL

LBNK3660BL LBUK3660BL

LBNK3661BL LBUK4260BL

LBNK4260BL LBUK4880BL

LBNK4261BL LBUL6080BL

LBNK4880BL LBUM7280BL

LBNK4881BL LBUM9080BL

LBNL6080BL LBUM1081BL

LBNL6081BL

LBNM7280BL

LBNM7281BL

LBNM9080BL

LBNM9081BL

LBNM1081BL

Contents

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

Product Specifications (Cooling & Heating)..........................................................................5

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

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

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

Operation Details ...................................................................................................................17

Installation of Indoor, Outdoor Unit .....................................................................................20

Cycle ........................................................................................................................................34

Cycle Troubleshooting Guide ...............................................................................................37

Electronic Parts Troubleshooting Guide .............................................................................38

Electronic Control Device .....................................................................................................41

Exploded View and Replacement Parts List .......................................................................42

–2–

Functions

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

Soft Dry Operation Mode

Auto Operation(Auto Change Over)

Deice (defrost) control (Heating)

Auto Restart

–3–

Hot-start Control (Heating) • The indoor fan stops until the evaporator piping tempera-

ture will be reached at 28°C.

High head height Drain pump(Optional) • A standard drain-head height of up to 700mm is possible.

Central Control(Optional) •

It is operating individually or totally by central control function.

Group Control(Optional Wiring)

Radio Frequency Control (Optional)

•

Each controller can control 16 units and 8 controllers can connect.

•

It operates maximum 16 units by only one wired remote con-

troller and each unit starts random to prevent overcurrent.

• 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

• Intermittent operation of fan at low speed.

• Although the air-conditioner is turned off by a power failure, it is restarted automati-

cally previous operation mode after power supply.

• The setting temperature and desired operation mode are auto-

matically set by fuzzy rule.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

–4–

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Timer

Weekly Program

(Cooling

model only) (Heating

model only)

(Low) (Med) (High)

Cooling Operation Mode ( )

Heating Operation Mode ( ) Auto Operation Mode ( )

Soft Dry Operation Mode ( )

Fan Operation Mode

HI AUTOMEDLO

Program Holiday

SET/CLR

MinHour

Week

Timer CancelTimer Cancel

: High:39°C ↔LOW:11°C

: Fan Operates without cooling & heating

Cooling Heating

Down to 18°C

Up to 30°C

Down to 16°C

Up to 30°C

Product Specifications (Cooling & Heating)

–5–

Power Source Ø, V, Hz

Cooling Capacity kcal/h(BTU/h)

Input W

Heating Capacity kcal/h(BTU/h)

Input W

Rated Load Amp. Cooling A

Heating A

Air Volumn Cooling(H/M/L) CMM(m3/min)

Heating(H/M/L)

Refrigerant(R-22) g

Drain Hose In. Dia mm

Main Cable No. X mm2

Connecting Cable

Remote Control Type

Refigerant Control Type

Fuction Soft Dry

Timer

Self Diagnosis

Deice Operation

Hot Start

Zone Control(Optional)

Central Control(Optional)

Group Control(Optional wiring)

Radio Frequency Control(Optional)

Weekly Programning

Thermistor

Drain Pump(Optional)

Auto changeover(Auto Operation: CL)

Stand-by Consumption 0

Connecting Pipe Liquid Inch

Gas (mm)

Dimension Indoor mm

Outdoor (W x H x D)

Net Indoor Kg

Weight Outdoor

Model

LB-S3061BL LB-K3660BL LB-K4260BL LB-K4880BL

1, 220-240, 50 1, 220-240, 50 1, 220-240, 50 3, 380-415, 50

7,307(2,900) 9,072(36,000) 10,584(42,000) 12,096(48,000)

8,500 10,551 12,309 14,067

3,200 3,600 5,100 4,900

8,064(32,000) 9,072(36,000) 11,314(45,500) 12,096(48,000)

9,378 10,551 13,190 14,067

3,000 3,400 4,700 4,400

14 16 22.5 8

13.5 14 21 7.3

30/26/22 35/32/28 46/38/32 49/47/44

2,020 2,240 3,600 3,351

22.6 22.6 22.6 22.6

3*3.5 3*5.5 3*8.5 4*3.5

5*1.25 5*1.25 5*1.25 5*1.25

L.C.D Wired L.C.D Wired L.C.D Wired L.C.D Wired

Orifice/Capillary Orifice/Capillary Orifice/Capillary Orifice/Capillary

Ye s Ye s Ye s Ye s

24 Hours On/Off 24 Hours On/Off 24 Hours On/Off 24 Hours On/Off

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

3/8(9.52) 3/8(9.52) 3/8(9.52) 3/8(9.52)

5/8(15.88) 5/8(15.88) 3/4(19.05) 3/4(19.05)

890*350*560 1,030*350*435 1,030*350*435 1,030*350*435

870*800*320 870*800*320 900*1,220*370 900*1,220*370

32 37 37 40

72 72 90 92

–6–

3, 380-415, 50 3, 380-415, 50 3,380-415, 50 3, 380-415, 50

15,120(60,000) 18,143(72,000) 21,924(87,000) 25,200(100,000)

17,585 21,101 25,497 29,307

7,000 7,000 8,800 10,500

15,120(60,000) 18,143(72,000) 21,924(87,000) 26,208(104,000)

17,585 21,101 25,497 30,479

6,500 6,800 7,400 8,700

12.7 13.0 14.5 17.0

12.5 13.0 12.7 14.7

55/50/46 73/68/62 84/76/65 84/76/65

4,629 6,931 8,100 8,000

22.6 22.6 22.6 22.6

4*3.5 4*3.5 4*5.5 4*5.5

5*1.25 5*1.25 5*1.25 5*1.25

L.C.D Wired L.C.D Wired L.C.D Wired L.C.D Wired

Orifice/Capillary Orifice/Capillary Orifice/Capillary Orifice/Capillary

Ye s Ye s Ye s Ye s

24 Hours On/Off 24 Hours On/Off 24 Hours On/Off 24 Hours On/Off

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

Optional Optional Optional Optional

Ye s Ye s Ye s Ye s

3/8(9.52) 1/2(12.7) 5/8(15.88) 5/8(15.88)

3/4(19.05) 1(25.4) 9/8(28.0) 9/8(28.0)

1,120*400*575 1,420*400*575 1,596*450*658 1,596*450*658

900*1,220*370 1,245*930*650 1,245*930*650 1,245*930*650

51 58 84 88

92 185 190 195

Power Source Ø, V, Hz

Cooling Capacity kcal/h(BTU/h)

Input W

Heating Capacity kcal/h(BTU/h)

Input W

Rated Load Amp. Cooling A

Heating A

Air Volumn Cooling(H/M/L) CMM(m3/min)

Heating(H/M/L)

Refrigerant(R-22) g

Drain Hose In. Dia mm

Main Cable No. X mm2

Connecting Cable

Remote Control Type

Refigerant Control Type

Fuction Soft Dry

Timer

Self Diagnosis

Deice Operation

Hot Start

Zone Control(Optional)

Central Control(Optional)

Group Control(Optional wiring)

Radio Frequency Control(Optional)

Weekly Programning

Thermistor

Drain Pump(Optional)

Auto changeover(Auto Operation: CL)

Stand-by Consumption 0

Connecting Pipe Liquid Inch

Gas (mm)

Dimension Indoor mm

Outdoor (W x H x D)

Net Indoor Kg

Weight Outdoor

Model

LB-L6080BL LB-M7280BL LB-M9080BL LB-M1081BL

Dimensions

–7–

1. Indoor

"A" "B" "C" "D" "E" "F" "G" "J" "K" "L" "M" "N" "P" "Q" "R" "S" "T" "V" "W" "X" "Y"

MODEL NO

LBNS3061BL

LBNK3661BL

LBNK4261BL

LBNK4881BL

LBNL6081BL

890

1040

1120

350

400

560

580

253

282

305

482

712

282

327

718

868

935

168

366

131

171

234

250

234

210

239

170

183

163

165

161

165

798

934

1014

798

937

1014

–

548

567

120

130

822

972

1052

514

533

"A" "B" "C" "D" "E" "F" "G" "J" "K" "L" "M" "N" "P" "Q" "R" "S" "T" "V" "W" "X" "Y"

MODEL NO

LBNM7281BL

LBNM9081BL

LBNM1081BL

1415

1596

400

450

580

658

303

833

835

327

377

1221

1403

258

348

300

228

230

182

219

165

185

1327

1504

1327

1504

567

130

190

1351

1532

533

612

"D" "F"

"X" "Y"2323

LIQUID

LINE

SUCTION

LINE

"C"

"B"

"A"

"G"

"E"

169

"T"

"W"

"S"

250

"J" "K" "L" "K"

"Q"

"P"

"R"

"M"

"N"

"M"

"N"

"J" "K" "L" "K"

"X"

"A"

"S"

250

"P"

"E"

"Q"

"G"

"T"

169

"R"

LIQUID

LINE

SUCTION

LINE

"B" "D"

23 23"Y"

"C"

"F"

"V" "W"

(30K/36K)

(42K/48K/60K)

(72K/90K/100K)

2. Outdoor Unit

–8–

Type: A Type: B Type: C

Model No. a b c TYPE

LBUS3061BL 870 320 800 A

LBUK3660BL 870 320 800 A

LBUK4260BL 900 370 1220 B

LBUK4880BL 900 370 1220 B

LBUL6080BL 900 370 1220 B

LBUM7280BL 1,245 650 930 C

LBUM9080BL 1,245 650 930 C

LBUM1081BL 1,245 650 930 C

(Unit: mm)

Refrigeration Cycle Diagram

–9–

Heat Pump

•If 60K Model is installed at a distance of 15m, 525g of refrigerant should be added

(15-7.5) x 70g = 525g

30K BTU/h

5/8" 3/8" 7.5 15 7.5 12.5 70

36K BTU/h

5/8" 3/8" 7.5 15 7.5 12.5 50

42K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

48K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

60K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

72K BTU/h 1'' 1/2" 7.5 25 7.5 20 70

90K BTU/h 9/8'' 5/8" 7.5 30 7.5 20 90

100K BTU/h 9/8'' 5/8" 7.5 30 7.5 20 100

Capacity

Gas Liquid

Elevation B(m)

Piping Length

A(m)

* Additional

Refrigerant

(g/m)

Pipe Size (Diam-

eter: Ø)

inch

Standard

Max.

Capacity Orifice Number

30K 63

36K 62

42K 74

48K 86

60K 86

72K 98

90K 84

100K 104

Orifice Number

–10–

Wiring Diagram

Model : LB-S3061BL

1. Indoor(LBNS3061BL)

2. Outdoor(LBUS3061BL)

INDOOR WIRING DIAGRAM

INDOOR

MOTOR

DRAIN

PUMP

GN/YL

COMP

4 WAY

FUSE

250V10A

ROOM.

THERMISTOR

PIPE

THERMISTOR

RF REMOTE

CONTROL

FLOAT S/W

REMOTE

CONTROL

ZONE

CONTROL

OPTIONAL

EXTRA

TERMINAL

BLOCK

TO OUTDOOR UNIT

3854A20172T

3(L) 4(N) 5 6 7

TELE

CONTROL

GN/YLGN/YL

1TM

240V 1Ø, 50Hz

POWER SUPPLY

52C

Outdoor Unit Wiring Diagram

L1 L2

T1 T2

52F1 12

TIMER

C TH

20SV

52S,52C

Tmo

52F1

FMo

D.P

CH1

THERMISTOR FOR PIPE TEMP.

REVERSING COIL

MAGNECTIC CONTACTOR

TERMINAL BLOCK

MAIN TERMINAL BLOCK

RELAY FOR FMo

RUN CAPACITOR FOR CM

COMPRESSOR

RUN CAPACITOR FOR FMo

OUTDOOR FAN MOTOR

FUSE (250V, 5A)

DEICER PCB

CRANK CASE HEATER FOR CM

START CAPACITOR FOR CM

P/NO : 3854A20026V

20SV

WIRING OF FIELD

(CONNECTING WIRE)

GN/YL Tmo

To the indoor unit

GN/YL

FMo

BK BK

BKBK

52S

REACTOR

NOTE

BL : BLUE

BK : BLACK

BR : BROWN

RD : RED

WH : WHITE

YL : YELLOW

OR : ORANGE

GN/YL : GREEN/YELLOW

TNS

NC NO NC NO

C TH

D.P

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