LG LB-D1861HL User manual

Ceiling Duct Type
Air Conditioner
SERVICE MANUAL
MODELS: LB-D1861HL/CL, LB-D1863HL/CL
LB-D2461HL/CL, LB-D2463HL/CL
LB-F3061HL, LB-F3063HL
LB-F3661HL/CL, LB-F3663HL/CL
LB-F3681HL/CL, LB-F3683HL/CL
LB-F4261HL, LB-F4263HL
LB-E4881HL/CL, LB-E4883HL/CL
LB-E6081HL/CL, LB-E6083HL/CL

Contents
Functions .................................................................................................................................3
Product Specifications (Cooling & Heating)..........................................................................5
Dimensions ..............................................................................................................................9
Refrigeration Cycle Diagram ................................................................................................11
Wiring Diagram ......................................................................................................................13
Operation Details ...................................................................................................................19
Installation of Indoor, Outdoor Unit .....................................................................................22
Cycle........................................................................................................................................36
Cycle Troubleshooting Guide ...............................................................................................39
Electronic Parts Troubleshooting Guide .............................................................................40
Electronic Control Device .....................................................................................................43
Exploded View and Replacement Parts List .......................................................................44
–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) •
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°CDown to 16°C Up to 30°C

Product Specifications (Cooling & Heating)
–5–
Item Unit
Cooling Capacity kcal/h(W)
BTU/h
Heating Capacity kcal/h(W)
BTU/h
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
E.E.R Cooling kcal/hW(W/W)
BTU/hW
C.O.P Heating kcal/hW(W/W)
BTU/hW
Power Supply Ø,V,Hz
Power Factor %
RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Outdoor rpm
Air Circulation Indoor(H/M/L) m3/min
Outdoor m3/min
External static pressure mmAq(Pa)
Moisture Removal l/h
Noise Level Indoor(H/M/L) dB(A)
(Sound Press,1m) Outdoor Max dB(A)
Drain hose In/Out diameter mm
Drain connection size(in/out) inch
Main cable No.X mm2
Connecting Cable No.X mm2
Refrigerant Control Type
Refrigerant(R-22) charge g
Compressor Locked Rotor Amp. A
Type
Model
Maker
Capacity kcal/h(BTU/h)
Motor Type
Motor Input W
Oil Type
Oil Charge CC
PTCR Ω
O.L.P Type(model name)
Indoor motor Type
Model
No. of Poles
Input W
Current A
Capacitor µF/Vac
Outdoor motor Type
Model
Input W
Current A
No. of Poles
Capacitor µF/Vac
SVC Valve Liquid inch(mm)
Gas inch(mm)
Connecting Tube Liquide Side inch(mm)
(ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length(elevation)
m
Dimensions (WXHXD) Indoor mm(inch)
Outdoor mm(inch)
Net Weight indoor kg(lbs)
Outdoor kg(lbs)
Stuffing Quantity With(Without)S/Parts 20/40ft
LB-D1861CL/D1863CL LB-D1861HL/D1863HL LB-D2461CL/D2463CL LB-D2461HL/D2463HL
4,536/5,274 4,536/5,274 6,048/7,032 6,048/7,032
18,000 18,000 24,000 24,000
- 4,536/5,274 - 6,048/7,032
- 18,000 - 24,000
2,050/- 1,950/1,900 2,800/- 2,600/2,500
9.5/- 9.4/9 13/- 12/11
45/- 45/45 45/- 45/45
2.32(2.70) 2.4(2.84) 2.27(2.64) 2.4(2.84)
9.2 9.7 9.0 9.7
- 2.49(2.9) - 2.49(2.9)
- 9.9 - 9.9
1,220-240,50 1,220-240,50 1,220-240,50 1,220-240,50
96 96 96 96
1,425/1,354/1,284 1,425/1,354/1,284 1,425/1,354/1,284 1,425/1,354/1,284
- 1,425/1,354/1,284 - 1,425/1,354/1,284
800 800 800 800
16.5/14/12 16.5/14/12 16.5/14/12 16.5/14/12
49 49 49 49
8(80) 8(80) 8(80) 8(80)
2.00 2.00 2.50 2.50
36/34/32 36/34/32 36/34/32 36/34/32
55 55 55 55
22.6/25.4 22.6/25.4 22.6/25.4 22.6/25.4
0.89/1 0.89/1 0.89/1 0.89/1
3*2.5 3*2.5 3*2.5 3*2.5
4*0.75 6*0.75 4*0.75 6*0.75
Capillary Type Capillary Type Capillary Type Capillary Type
1,400 1,900 1,500 2,270
45 45 - -
ROTORY ROTORY ROTORY ROTORY
2JS318G3AB02 2JS318G3AB02 2J44S235A1A 2J44S235A1A
MATSUSHITA MATSUSHITA MATSUSHITA MATSUSHITA
4,910(19,480) 4,910(19,480) 6,750(26,783) 6,750(26,783)
psc psc psc psc
1,885 1,885 2,510 2,510
Suniso 4GDID Suniso 4GDID Suniso 4GDID Suniso 4GDID
1,130 1,130 1,130 1,130
--- -
Internal Internal Internal Internal
condenser inducted condenser inducted condenser inducted condenser inducted
808555JVA-A12EX 808555JVA-A12EX 808555JVA-A12EX 808555JVA-A12EX
444 4
144 144 144 144
0.7 0.7 0.7 0.7
10/370 10/370 10/370 10/370
Condenser inducted Condenser inducted Condenser inducted Condenser inducted
IC-1640LGFA IC-1640LGFA IC-1640LGFA OBM-4003P2
151 151 151 151
0.35 0.35 0.35 0.35
666 6
6/370 6/370 6/370 6/370
1/4(6.35) 1/4(6.35) 1/4(6.35) 1/4(6.35)
5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88)
1/4(6.35) 1/4(6.35) 1/4(6.35) 1/4(6.35)
5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88)
7.5 7.5 7.5 7.5
50(30) 50(30) 50(30) 50(30)
880*575*281(34.65*22.64*11.06) 880*575*281(34.65*22.64*11.06) 880*575*281(34.65*22.64*11.06) 880*575*281(34.65*22.64*11.06)
870*320*655(34.25*12.60*25.79) 870*320*655(34.25*12.60*25.79) 870*320*655(34.25*12.60*25.79) 870*320*655(34.25*12.60*25.79)
42(92.5) 42(92.5) 42(92.5) 42(92.5)
57(125.6) 57(125.6) 60(132.2) 60(132.2)
45/92(45/92) 45/92(45/92) 45/92(45/92) 45/92(45/92)

–6–
Item Unit
Cooling Capacity kcal/h(W)
BTU/h
Heating Capacity kcal/h(W)
BTU/h
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
E.E.R Cooling kcal/hW(W/W)
BTU/hW
C.O.P Heating kcal/hW(W/W)
BTU/hW
Power Supply Ø,V,Hz
Power Factor %
RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Outdoor rpm
Air Circulation Indoor(H/M/L) m3/min
Outdoor m3/min
External static pressure mmAq(Pa)
Moisture Removal l/h
Noise Level Indoor(H/M/L) dB(A)
(Sound Press,1m) Outdoor Max dB(A)
Drain hose In/Out diameter mm
Drain connection size(in/out) inch
Main cable No.X mm2
Connecting Cable No.X mm2
Refrigerant Control Type
Refrigerant(R-22) charge g
Compressor Locked Rotor Amp. A
Type
Model
Maker
Capacity kcal/h(BTU/h)
Motor Type
Motor Input W
Oil Type
Oil Charge CC
PTCR Ω
O.L.P Type(model name)
Indoor motor Type
Model
No. of Poles
Input W
Current A
Capacitor µF/Vac
Outdoor motor Type
Model
Input W
Current A
No. of Poles
Capacitor µF/Vac
SVC Valve Liquid inch(mm)
Gas inch(mm)
Connecting Tube Liquide Side inch(mm)
(ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length(elevation)
m
Dimensions (WXHXD) Indoor mm(inch)
Outdoor mm(inch)
Net Weight indoor kg(lbs)
Outdoor kg(lbs)
Stuffing Quantity With(Without)S/Parts 20/40ft
LB-F3061HL/F3063HL LB-F3661CL/F3663CL LB-F3661HL/F3663HL LB-F3681CL/F3683CL
7,560/8,790 9,072/10,548 9,072/10,548 9,072/10,548
30,000 36,000 36,000 36,000
7,560/8,790 - 9,072/10,548 -
30,000 - 36,000 -
3,000/2,500 4,400/- 4,400/3,600 4,000/-
14/12 20/- 20/20 8/-
110/110 125/- 125/125 45/-
2.52(2.93) 2.17(2.52) 2.17(2.52) 2.39(2.78)
10.0 8.6 8.6 9.5
3.01(3.5) - 2.67(3.1) -
11.95 - 10.58 -
1,220-240,50 1,220-240,50 1,220-240,50 1,380-415,50
96 96 96 91
1,330/1,276/1,213 1,330/1,276/1,213 1,330/1,276/1,213 1,330/1,276/1,213
1,330/1,276/1,213 - 1,330/1,276/1,213 -
930 940 940 940
31.5/29/25 31.5/29/25 31.5/29/25 31.5/29/25
49 52 52 52
10(100) 10(100) 10(100) 10(100)
3.50 4.50 4.50 4.50
42/40/38 42/40/38 42/40/38 42/40/38
56 56 56 56
22.6/25.4 22.6/25.4 22.6/25.4 22.6/25.4
0.89/1 0.89/1 0.89/1 0.89/1
3*3.5 3*5.5 3*5.5 4*2.5
5*0.75 4*0.75 5*0.75 4*0.75
Capillary Type Capillary Type Capillary Type Capillary Type
2,600 2,850 2,850 2,800
110 125 125 45
RECIPROCATING RECIPROCATING RECIPROCATING RECIPROCATING
H25B35QABHA CR47K6-PFZ CR47K6-PFZ CR47K6-TFD
BRISTOL COPELAND COPELAND COPELAND
7,560(30,000) 10,558(41,900) 10,558(41,900) 10,634(42,200)
psc psc psc psc
2,780 4,340 4,340 4,290
SUNISO 3GS SONTEX 200LT SONTEX 200LT SUNISO 3GS
1,180 1,627 1,627 1,627
20 20 20 -
Internal Internal Internal Internal
Condenser inducted Condenser inducted Condenser inducted Condenser inducted
IC-13470LGDM IC-13470LGDM IC-13470LGDM IC-13470LGDM
44 4 4
353 353 353 353
1.65 1.65 1.65 1.65
10/370 10/370 10/370 10/370
Condenser inducted Condenser inducted Condenser inducted Condenser inducted
AMR-070B6 AMR032E6 AMR032E6 AMR032E6
151 151 151 151
0.35 0.62 0.62 0.62
64 4 4
6/370 2/400 2/400 2/400
3/8(9.52) 3/8(9.52) 3/8(9.52) 3/8(9.52)
5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88)
3/8(9.52) 3/8(9.52) 3/8(9.52) 3/8(9.52)
5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88)
7.5 7.5 7.5 7.5
50(30) 50(30) 50(30) 50(30)
1,180*600*298(46.46*23.62*11.73) 1,180*600*298(46.46*23.62*11.73) 1,180*600*298(46.46*23.62*11.73) 1,180*600*298(46.46*23.62*11.73)
870*320*800(34.25*12.60*31.5) 790*320*965(31.10*12.6*37.99) 790*320*965(31.10*12.6*37.99) 790*320*965(31.10*12.6*37.99)
46(101.3) 46(101.3) 46(101.3) 46(101.3)
55(121.2) 78(171.8) 78(171.8) 78(171.8)
32/71(32/71) 34/72(34/72) 34/72(34/72) 34/72(34/72)

–7–
Item Unit
Cooling Capacity kcal/h(W)
BTU/h
Heating Capacity kcal/h(W)
BTU/h
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
E.E.R Cooling kcal/hW(W/W)
BTU/hW
C.O.P Heating kcal/hW(W/W)
BTU/hW
Power Supply Ø,V,Hz
Power Factor %
RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Outdoor rpm
Air Circulation Indoor(H/M/L) m3/min
Outdoor m3/min
External static pressure mmAq(Pa)
Moisture Removal l/h
Noise Level Indoor(H/M/L) dB(A)
(Sound Press,1m) Outdoor Max dB(A)
Drain hose In/Out diameter mm
Drain connection size(in/out) inch
Main cable No.X mm2
Connecting Cable No.X mm2
Refrigerant Control Type
Refrigerant(R-22) charge g
Compressor Locked Rotor Amp. A
Type
Model
Maker
Capacity kcal/h(BTU/h)
Motor Type
Motor Input W
Oil Type
Oil Charge CC
PTCR Ω
O.L.P Type(model name)
Indoor motor Type
Model
No. of Poles
Input W
Current A
Capacitor µF/Vac
Outdoor motor Type
Model
Input W
Current A
No. of Poles
Capacitor µF/Vac
SVC Valve Liquid inch(mm)
Gas inch(mm)
Connecting Tube Liquide Side inch(mm)
(ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length(elevation)
m
Dimensions (WXHXD) Indoor mm(inch)
Outdoor mm(inch)
Net Weight indoor kg(lbs)
Outdoor kg(lbs)
Stuffing Quantity With(Without)S/Parts 20/40ft
LB-F3681HL/F3683HL LB-F4261HL/F4263HL
9,072/10,548 10,584/12,306
36000 42000
9,072/10,548 10,584/12,306
36000 42000
4,000/3,400 4,800/4,600
8/7 24/23
45/45 125/125
2.39(2.78) 2.32(2.70)
9.5 9.2
2.84(3.3) 2.41(2.8)
11.26 9.56
1,380-415,50 1,220-240,50
91 96
1,330/1,276/1,213 1,330/1,276/1,213
1,330/1,276/1,213 1,330/1,276/1,213
940 940
31.5/29/25 31.5/29/25
52 105
10(100) 10(100)
4.5 5
42/40/38 42/40/38
56 58
22.6/25.4 22.6/25.4
0.89/1 0.89/1
4*2.5 4*5.5
5*0.75 5*0.75
Capillary Type Capillary Type
2800 4900
45 125
RECIPROCATING RECIPROCATING
CR47K6-TFD AVB5558EXN
COPELAND TECUMSEH
10,634(42,200) 14,490(57,500)
psc psc
4290 5480
SUNISO 3GS SUNISO 3GS
1627 1588
-20
Internal Internal
Condenser inducted Condenser inducted
IC-13470LGDM IC-13470LGDM
44
353 353
1.65 1.65
10/370 10/370
Condenser inducted Condenser inducted
AMR032E6 OBM-4002P2
151 151
0.62 0.72
46
2/400 6/370
3/8(9.52) 3/8(9.52)
5/8(15.88) 3/4(19.05)
3/8(9.52) 3/8(9.52)
5/8(15.88) 3/4(19.05)
7.5 7.5
50(30) 50(30)
1,180*600*298(46.46*23.62*11.73) 1,180*600*298(46.46*23.62*11.73)
790*320*965(31.10*12.6*37.99) 900*370*1220(35.43*14.57*48.03)
46(101.3) 46(101.3)
78(171.8) 90(198.3)
34/72(34/72) 22/48(22/48)

–8–
Item Unit
Cooling Capacity kcal/h(W)
BTU/h
Heating Capacity kcal/h(W)
BTU/h
Input Cooling/Heating W
Running Current Cooling/Heating A
Starting Current Cooling/Heating A
E.E.R Cooling kcal/hW(W/W)
BTU/hW
C.O.P Heating kcal/hW(W/W)
BTU/hW
Power Supply Ø,V,Hz
Power Factor %
RPM Cooling(H/M/L) rpm
Heating(H/M/L) rpm
Outdoor rpm
Air Circulation Indoor(H/M/L) m3/min
Outdoor m3/min
External static pressure mmAq(Pa)
Moisture Removal l/h
Noise Level Indoor(H/M/L) dB(A)
(Sound Press,1m) Outdoor Max dB(A)
Drain hose In/Out diameter mm
Drain connection size(in/out) inch
Main cable No.X mm2
Connecting Cable No.X mm2
Refrigerant Control Type
Refrigerant(R-22) charge g
Compressor Locked Rotor Amp. A
Type
Model
Maker
Capacity kcal/h(BTU/h)
Motor Type
Motor Input W
Oil Type
Oil Charge CC
PTCR Ω
O.L.P Type(model name)
Indoor motor Type
Model
No. of Poles
Input W
Current A
Capacitor µF/Vac
Outdoor motor Type
Model
Input W
Current A
No. of Poles
Capacitor µF/Vac
SVC Valve Liquid inch(mm)
Gas inch(mm)
Connecting Tube Liquide Side inch(mm)
(ø. Socket Flare) Gas Side inch(mm)
Length, std m
Max length(elevation)
m
Dimensions (WXDXH) Indoor mm(inch)
Outdoor mm(inch)
Net Weight indoor kg(lbs)
Outdoor kg(lbs)
Stuffing Quantity With(Without)S/Parts 20/40ft
LB-E4881CL/E4883CL LB-E4881HL/E4883HL LB-E6081CL/E6083CL LB-E6081HL/E6083HL
12,096/14,064 12,096/14,064 15,120/17,580 15,120/17,580
48,000 48,000 60,000 60,000
- 12,096/14,064 - 15,120/17,580
- 48,000 - 60,000
6,000/- 5,500/4,500 6,000/- 6,150/4,900
9.5/- 9/8 10/- 10.5/8.5
125/- 125/125 101/- 101/101
2.12(2.46) 2.32(2.70) 2.29(3.02) 2.4(2.84)
8.4 9.2 10.3 9.7
- 2.84(3.3) - 3.27(3.8)
- 11.26 - 12.97
3,380-415,50 3,380-415,50 3,380-415,50 3,380-415,50
90 90 90 90
1,034/976/932 1,034/976/932 1,151/1,075/1,030 1,151/1,075/1,030
- 1,034/976/932 - 1,151/1,075/1,030
880 880 880 880
40/35/31 40/35/31 46/40/35 46/40/35
105 105 105 105
10/15(100/150) 10/15(100/150) 10/15(100/150) 10/15(100/150)
6.00 6.00 6.50 6.50
42/40/38 42/40/38 45/43/41 45/43/41
62 62 62 62
22.6/25.4 22.6/25.4 22.6/25.4 22.6/25.4
0.89/1 0.89/1 0.89/1 0.89/1
3*3.5 3*3.5 3*3.5 3*3.5
4*1.25 5*1.25 4*1.25 5*1.25
Capillary Type Capillary Type Capillary Type Capillary Type
3,030 4,250 6,250 6,550
125 125 101 101
RECIPROCATING RECIPROCATING RECIPROCATING RECIPROCATING
H23A623DBEA H23A623DBEA H26A72QDBEA H26A72QDBEA
BRISTOL BRISTOL BRISTOL BRISTOL
13,054(51,800) 13,054(51,800) 15,518(61,580) 15,518(61,580)
psc psc psc psc
5,480 5,480 6,200 6,200
Sunsino 3GS Sunsino 3GS Sunsino 3GS Sunsino 3GS
2,070 2,070 1,774 1,774
-- --
Internal Internal Internal Internal
Condenser inducted Condenser inducted Condenser inducted Condenser inducted
808555AVA-A12EX 808555AVA-A12EX 808555PVA-A18EX 808555PVA-A18EX
44 44
604 604 590 590
2.7 2.7 2.6 2.6
12/450 12/450 15/450 15/450
Condenser inducted Condenser inducted Condenser inducted Condenser inducted
OBM-4006P2 OBM-4004P2 OBM-4006P2 OBM-4006P2
151 151 151 151
1.02 1.02 1.02 1.02
66 66
6/370 6/370 6/370 6/370
3/8(9.52) 3/8(9.52) 1/2(12.7) 1/2(12.7)
3/4(19.05) 3/4(19.05) 3/4(19.05) 3/4(19.05)
3/8(9.52) 3/8(9.52) 1/2(12.7) 1/2(12.7)
3/4(19.05) 3/4(19.05) 3/4(19.05) 3/4(19.05)
7.5 7.5 7.5 7.5
50(30) 50(30) 50(30) 50(30)
1,230*680*370(48.43*26.77*14.57) 1,230*680*370(48.43*26.77*14.57) 1,230*680*370(48.43*26.77*14.57) 1,230*680*370(48.43*26.77*14.57)
900*370*1,220(35.43*14.57*48.03) 900*370*1,220(35.43*14.57*48.03) 900*370*1,220(35.43*14.57*48.03) 900*370*1,220(35.43*14.57*48.03)
70(154.2) 70(154.2) 70(154.2) 70(154.2)
90(198.3) 95 90(198.3) 95(209.3)
20/45(20/45) 20/45(20/45) 20/45(20/45) 20/45(20/45)

Dimensions
–9–
WD
H
(1) Indoor Unit
MODEL
DIM
W(mm) 880 880 1180 1180 1180 1230 1230
H(mm) 281 281 298 298 298 370 370
D(mm) 575 575 600 600 600 680 680
18K 24K 30K 36K 42K 48K 60K

(2) Outdoor Unit
–10–
W
H
D
W
H
D
(36K/42K/48K/60K)(18K/24K/30K)
MODEL
DIM
W(mm) 870 870 870 790 900 900 900
H(mm) 655 655 800 965 1,220 1,220 1,220
D(mm) 320 320 320 320 370 370 370
18K 24K 30K 36K 42K 48K 60K

Refrigeration Cycle Diagram
• HEAT PUMP (LB-D1861HL/LB-D1863HL/LB-D2461HL/LB-D2463HL/LB-F3061HL/LB-F3063HL/
LB-F3661HL/LB-F3663HL/LB-F3681HL/LB-F3683HL/LB-F4261HL/LB-F4263HL/
LB-E4881HL/LB-E4883HL/LB-E6081HL/LB-E6083HL)
•Rated performance for refrigerant line length of: 7.5m
•If 18K Model is installed at a distance of 15m, 188g of refrigerant should be added (15-7.5)x25g=188g
–11–
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGER HEAT
EXCHANGER
COMPRESSOR
GAS SIDE
LIQUID SIDE
COOLING
HEATING
REVERSING
VALVE
CAPILLARY TUBE
Pipe size(Diameter: ø) Piping length(m) Elevation(m)
MODEL Gas Liquid Rated Max. Rated Max.
18K 5/8" 1/4" 7.5 50 5 30 25
24K 5/8" 1/4" 7.5 50 5 30 30
30K 5/8" 3/8" 7.5 50 5 30 50
36K 5/8" 3/8" 7.5 50 5 30 40
42K 3/4" 3/8" 7.5 50 5 30 50
48K 3/4" 3/8" 7.5 50 5 30 50
60K 3/4" 1/2" 7.5 50 5 30 60
*Additional
refrigerant
(g/m)

–12–
• COOLING ONLY (LB-D1861CL/LB-D1863CL/LB-D2461CL/LB-D2463CL/LB-F3661CL/
LB-D3663CL/LB-F3681CL/LB-F3683CL/LB-E4881CL/LB-E4883CL/
LB-E6081CL/LB-E6083CL)
•Rated performance for refrigerant line length of: .7.5m
•If 18K Model is installed at a distance of 15m, 188g of refrigerant should be added (15-7.5)x25g=188g
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGER
(CONDENSER)
HEAT
EXCHANGER
(CONDENSER)
COMPRESSOR
GAS SIDE
LIQUID SIDE
CAPILLARY TUBE
Pipe size(Diameter: ø) Piping length(m) Elevation(m)
MODEL Gas Liquid Rated Max. Rated Max.
18K 5/8" 1/4" 7.5 50 5 30 25
24K 5/8" 1/4" 7.5 50 5 30 25
36K 5/8" 3/8" 7.5 50 5 30 40
48K 3/4" 3/8" 7.5 50 5 30 50
60K 3/4" 1/2" 7.5 50 5 30 60
*Additional
refrigerant
(g/m)

–13–
Wiring Diagram
HEAT PUMP
Model : LB-D1861HL/LB-D1863HL/LB-D2461HL/LB-D2463HL
COOLING ONLY
Model : LB-D1861CL/LB-D1863CL/LB-D2461CL/LB-2463CL
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
COMP
R
SH
4
28 61 0
CF
BL YL
OR
BK
TB2
BR
BR
BR
BR
BL
BL
BL BL
BL
GN/YL GN/YL
BK YL
RD
CAPACITOR
REVERSING
VALVE
RD
C
POWER
RELAY
FAN
MOTOR
FUSE 5A
FUSE 5A
POWER
INPUT
TO INDOOR UNIT
TERMINAL
BLOCK
1
(
L
)
2
(
N
)
3
(
L
)
4
(
N
)
5678
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BK
YL
BL BL
BK
GN/YL
GN/YL
COMP
4 WAY
OUT FAN
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
7
3(L)4(N)5 6
TO OUTDOOR UNIT
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
COMP
R
SH
4
28 61 0
CF
BL YL
OR
BK
TB2
BR
BR
BR
BR
BL
BL
BL BL
BL
GN/YL GN/YL
YL RD
CAPACITOR
RD
C
POWER
RELAY
FAN
MOTOR
FUSE 5A
FUSE 5A
POWER
INPUT
TO INDOOR UNIT
TERMINAL
BLOCK
1
(
L
)
2
(
N
)
3
(
L
)
4
(
N
)
5678
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BL BL
BK
GN/YL
GN/YL
COMP
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
7
3(L)4(N)5 6
TO OUTDOOR UNIT

–14–
HEAT PUMP
Model : LB-F3061HL/LB-F3063HL
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
4
3854AP2708T
81
26
L3 L2 L1
0
R
CS
561324
CAPACITORBL
RD
BL BR
BR
BK
SUMP
HEATER
BK
BL BL BR
BK
BL BR
BK
HIGH PRESS SWITCH
DEICER PCB
BR BL
POWER
INPUT TO INDOOR UNIT
TERMINAL
BLOCK
TERMINAL
BLOCK
12
FUSE 5A FUSE 5A
POWER
RELAY
REVERSING
VALVE
COMP
CAPACITOR
YL OR
OR
BK
BK
BK
BK
WH YL
FAN
MOTOR
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BK
BL BL
BK
GN/YL
GN/YL
COMP
4 WAY
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
7
3(L)4(N)5 6
TO OUTDOOR UNIT
3854A30086Q

–15–
HEAT PUMP
Model : LB-F3661HL/LB-F3663HL
COOLING ONLY
Model : LB-F3661CL/LB-F3663CL
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
78
1TM
220-240V
1Ø, 50Hz
POWER SUPPLY
BK
63H2 52C L1 L2
T1 T2
A2
A1
BK
WH BK
52F1
12
34
56
TNS NO
C TH
NC
D.P
WH BK
WH
BK
WH
BL
RD
GN/YL
BLBK
YL
WH
T/B1
F1
BK
WH
WH
WH
Co
OR YL Co OR
FMo1
49FMo
3854A20025G
FMo2
49FMo 20SV
YL
BKBK
BR
BK
BL
BK
WH
BK BK
BK BK
GN/YL Tmo
To the indoor unit
WH
GN/YL
23
LN
1
2
3
4
5
6
CH1
BK WH RD
RC
S
CM
Cr
PTCR
INDOOR
MOTOR DRAIN
PUMP
BR
BR
BL
RD
BK
GN/YL
YL
OR RD BL
BL BL
BK
GN/YL
COMP
4 WAY
FUSE
250V10A
ROOM.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTIONAL
EXTRA
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20031X
3(L) 4(N) 5 6 7
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A20025J
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BL BL
BK
GN/YL
GN/YL
COMP
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
1(L)2(N)43 5
TO OUTDOOR UNIT
3854A20031Y
1TM
220-240V
1Ø, 50Hz
POWER SUPPLY
BK
52C L1 L2
T1 T2
A2
A1
BK
WH
WH
BK
WH
BL
GN/YL
T/B
F1
BK
WH
WH
Co
OR YL Co OR
FMo1FMo2
YL
BKBK
BR
BK
BL
BK
BK
WH
GN/YL
To the indoor unit
WH
GN/YL
23
LN
TMo
1
2
3
4
5
6
CH1
BK WH RD
RC
S
CM
Cr
PTCR

–16–
HEAT PUMP
Model : LB-F3681HL/LB-F3683HL
COOLING ONLY
Model : LB-F3681CL/LB-F3683CL
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854A90021F
INDOOR
MOTOR DRAIN
PUMP
BR
BR
BL
RD
BK
GN/YL
YL
OR RD BL
BL BL
BK
GN/YL
COMP
4 WAY
FUSE
250V10A
ROOM.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTIONAL
EXTRA
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20031X
3(L) 4(N) 5 6 7
78
1TM
380-415V
3Ø, 50Hz
POWER SUPPLY
BK
63H2
52C 13531
24632
B
A
BK
WH BK
52F1
12
34
56
TNS NO
C TH
NC
D.P
WH BK
WH
BK
WH
BL
RD
GN/YL
BLBK
WH
T/B1
F1
BK
WH
WH
RD
BK
WH BK
BK
RD WH
T1 T3
T2
CH1
Co
OR YL Co OR
FMo1FMo2CM
YL
YL
BKBK
BR
BK
BL
BK
WH
GN/YL TMo
To the indoor unit
WH
234
RSTN
20SV BK BK
BK BK
1
2
3
4
5
6
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
1TM
3ø, 380V, 50Hz
POWER SUPPLY
BK
52C 13531
24632
B
A
BK
WH
WH
BK
WH
BL
GN/YL
T/B
F1
BK
WH
RD
WH
BK
RD WH
T1 T3
T2
Co
OR YL Co OR
FMo1
3854A90010Y
FMo2CM
YL
BKBK
BR BL
BK
BKBK
WH
GN/YL TMo
To the indoor unit
WH WH
234
RSTN
1
2
3
4
5
6
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BL BL
BK
GN/YL
GN/YL
COMP
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
1(L)2(N)43 5
TO OUTDOOR UNIT
3854A20031Y

–17–
HEAT PUMP
Model : LB-F4261HL/LB-F4263HL
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
3854AP2778F
INDOOR
MOTOR DRAIN
PUMP
BR
BR
BL
RD
BK
GN/YL
YL
OR RD BL
BL BL
BK
GN/YL
COMP
4 WAY
FUSE
250V10A
ROOM.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTIONAL
EXTRA
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20031X
3(L) 4(N) 5 6 7
CM
1
2
3
4
5
6
220-240V
1ø,50Hz
POWER SUPPLY
LN 1
2
3
4
5
6
31
32
B
A
WH
BR BR
RD
BK YL YL
YL
FMo1
49FMo FMo2 49FMo
Co
TM 52C
63H2
Co
BK YL BK
OR OR
RD
BK
BK RD
Cr
CH
S
RC
WH
WH WH
BK BK
BK
WH WH
WH
BL
YL BK
RD
RD
To the indoor unit
52F1
BL
WH
PTCR
GN/YL GN/YL Tmo
12
34
56
78
F1
T/B1
T/B2
BK
BK
BK
BR
OR
BK
D.P
TNS NO NC
C TH
WH
WH
BK
WH
BL
RD
GN/YL
20SV

HEAT PUMP
Model : LB-E4881HL/LB-E4883HL/LB-E6081HL/LB-E6083HL
COOLING ONLY
Model : LB-E4881CL/LB-E4883CL/LB-E6081CL/LB-E6083CL
–18–
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
R
TERMINAL
BLOCK
POWER SUPPLY
POWER
RELAY
STN
BK
BK BK
WH
WH WH
RD
OR
BK
HIGH PRESSURE S/W
WH
Deice PCB
CTH
TNS NO NC
WH
OR
BK
POWER
RELAY
1
2
3
4
5
6
31
T/B1
T/B2
32
B
A
FAN
MOTOR FAN MOTOR
YL BK
OR
BK
T3 T2 T1
RD
WH
COMP.
12
34
56
78
YL BK
OR
BK
BK
BL
BL
BK WH
CAPACITOR CAPACITOR
REVERSING
VALVE
BR
BL
BR
BL
GN/YL
GN/YL
TERMINAL BLOCK
To the indoor unit
1
2
3
4
5
6
BK
WHWH YL
BK
RD
Fuse
(250V 5A)
Fuse
(250V 5A)
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BK
BL BL
BK
GN/YL
GN/YL
COMP
4 WAY
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
1(L)2(N)43 5
TO OUTDOOR UNIT
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
INDOOR
MOTOR DRAIN
PUMP
BR
BR
YL
OR RD BL
BL
RD
BL BL
BK
GN/YL
GN/YL
COMP
FUSE
250V10A
TEMP.
THERMISTOR
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
ZONE
CONTROL
OPTION
TERMINAL
BLOCK
1(L)2(N)43 5
BK
WH
BL
GN/YL
GN/YL TMo
To the indoor unit
1
2
3
4
5
6
F1
F1
RTM
3Ø, 380-415V, 50Hz
POWER SUPPLY
STN
BK
BK
WH
RD
WH WH
52C 1
2
3
4
5
6
31
32
B
A
FMo
49FMo FMo 49FMo
BK
GN/YL T3 T2 T1
RD
WH BK
BL
WH
WH
CM
YL BK
OR
Co Co
YL
OR BK
BR
BK
OR
OR
BR

–19–
Operation Details
(1) The function of main control
1. Time Delay safety Control
•3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
•30sec... The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Soft-Dry Operation
•The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
3. Cooling Mode Operation
•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as following.
Intake Air temp.
SET TEMP.+0.5°C
(COMP. ON)
SET TEMP. -0.5°C
(COMP. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low

–20–
Intake Air temp.
Setting temp.+3°C
(Compressor OFF)
Setting temp.
(Compressor ON)
INDOOR FAN Low OFF Low Low OFF
COMPRESSOR ON OFF ON OFF
•A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when
it becomes lower than 40˚C fan stops.
•B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan
speed, when it becomes lower than 39°C, the fan operates at low speed.
4. Heating Mode Operation (Except Cooling Model)
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Hot Start
Low
Selecting
Fan Speed
minimum 3min
Selecting fan
speed
minimum
10sec.
1min
AA
minimum
10sec.
B
5. Hot-Start Control
•The indoor fan stops until the evaporator piping temperature will be reached to 31°C.
•The operation diagram is as following.
PIPING
TEMPERATURE 1min
COMPRESSOR
INDOOR FAN
ON
28°C
: Selected Fan : Low Fan : Fan Stop
31°C