Lennox LI012CO-230P432 User manual

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Service Manual
Models:
LI012CI-230P432 LI012CO-230P432
LI012HI-230P432 LI012HO-230P432
LI018CI-230P432 LI018CO-230P432
LI018HI-230P432 LI018HO-230P432
LI024HI-230P432 LI024HO-230P432
LI024CI-230P432 LI024CO-230P432

Service Manual
Table of contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
2.1 Specication Sheet...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................8
2.3 Capacity Variation Ratio According to Temperature .........................................................8
2.4 Noise Curve......................................................................................................................9
2.5 Cooling and Heating Data Sheet in Rated Frequency .....................................................9
3. Outline Dimension Diagram......................................................................10
3.1 Indoor Unit......................................................................................................................10
3.2 Outdoor Unit ...................................................................................................................11
4. Refrigerant System Diagram....................................................................13
5. Electrical Part.........................................................................................................14
5.1 Wiring Diagram...............................................................................................................14
5.2 PCB Printed Diagram .....................................................................................................19
6. Function and Control......................................................................................23
6.1 Remote Controller Introduction .....................................................................................23
6.2 Brief Description of Modes and Functions......................................................................27
Part Ⅱ: Installation and Maintenance .................................................36
7. Notes for Installation and Maintenance..........................................36
8. Installation................................................................................................................39
8.1 Installation Dimension Diagram......................................................................................39
8.2 Installation Parts-checking ............................................................................................41
8.3 Selection of Installation Location....................................................................................41
8.4 Requirements for electric connection ............................................................................41
8.5 Installation of Indoor Unit................................................................................................41
8.6 Installation of Outdoor Unit.............................................................................................44
8.7 Vacuum Pumping and Leak Detection ...........................................................................45
8.8 Check after Installation and Test Operation ...................................................................45

Service Manual
Table of contents Table of contents
9. Maintenance............................................................................................................46
9.1 Precautions before Maintenance....................................................................................46
9.2 Error Code List ...............................................................................................................47
9.3 Troubleshooting for Main Malfunction ............................................................................50
9.4 Troubleshooting for Normal Malfunction.........................................................................63
10. Exploded View and Parts List..............................................................65
10.1 Indoor Unit....................................................................................................................65
10.2 Outdoor Unit .................................................................................................................73
11. Removal Procedure.......................................................................................85
11.1 Removal Procedure of Indoor Unit ...............................................................................85
11.2 Removal Procedure of Outdoor Unit ............................................................................95
Appendix:......................................................................................................................110
Appendix 1: Reference Sheet of Celsius and Fahrenheit ..................................................110
Appendix 2: Conguration of Connection Pipe...................................................................110
Appendix 3: Pipe Expanding Method .................................................................................111
Appendix 4: List of Resistance for Temperature Sensor ....................................................112

Y6759
Y6513
Y6757
Y6512
Y6511 / Y6512
1
Technical Information
Service Manual
1. Summary
Indoor Unit:
Part Ⅰ: Technical Information
LI012CI-230P432
LI012HI-230P432
LI018CI-230P432
LI018HI-230P432
LI024CI-230P432
LI024HI-230P432
Outdoor Unit:
LI018CO-230P432
LI018HO-230P432 LI024CO-230P432 LI024HO-230P432
Remote Controller:
YAA1FB
/
F
C
HOUR
ONOFF
No. Model Product code Indoor model Indoor product
code Outdoor model Outdoor product code
1LI018CI-230P432
LI018CO-230P432 LI018CI-230P432 Y6511 LI018CO-230P432
2LI018HI-230P432
LI018HO-230P432 Y6756 / Y6757 LI018HI-230P432 Y6756 LI018HO-230P432
3LI024CI-230P432
LI024CO-230P432 Y6513 / Y6514 LI024CI-230P432 LI024CO-230P432 Y6514
4LI012CI-230P432
LI012CO-230P432 Y6509 / Y6510 LI012CI-230P432 Y6509 LI012CO-230P432 Y6510
5LI012HI-230P432
LI012HO-230P432 Y6754 / Y6755 LI012HI-230P432 Y6754 LI012HO-230P432 Y6755
6LI024HI-230P432
LI024HO-230P432 Y6758 / Y6759 Y6758 LI024HO-230P432
Model List:
LI012CO-230P432(LC)
LI012HO-230P432(LCLH)
LI024HI-230P432

2Technical Information
Service Manual
Model LI012CI-230P432
LI012CO-230P432 LI012HI-230P432 LI012HO-230P432
Product Code
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) Btu/h 12000(3100~13000) 12000(3100~13000)
Heating Capacity(Min~Max) Btu/h / 13000(2400~14000)
Cooling Power Input(Min~Max) W 923(200~1350) 960(200~1350)
Heating Power Input(Min~Max) W / 1100(400~1400)
Cooling Power Current A 4.50 4.50
Heating Power Current A / 5.50
Rated Input W 1350 1400
Rated Current A 6.0 6.3
Air Flow Volume(SH/H//M/L) CFM 400/288/241/171 400/288/241/171
Dehumidifying Volume Pint/h 2.96 2.96
EER (Btu/h)/W 12.50 13.00
COP (Btu/h)/W / 11.82
SEER 22.00 22.00
HSPF / 10.10
Application Area yd219.14-28.70 19.14-28.70
Indoor Unit
Model of indoor unit LI012CI-230P432 LI012HI-230P432
Indoor Unit Product Code Y6509 Y6754
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ3 55/64X25 Φ3 55/64X25
Fan Motor Cooling Speed(SH/H/M/L) r/min 1400/1200/1050/800 1400/1200/1050/800
Fan Motor Heating Speed(SH/H/M/L) r/min / 1400/1200/1000/900
Output of Fan Motor W 20 20
Fan Motor RLA A 0.09 0.09
Fan Motor Capacitor μF / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ2/7 Φ2/7
Row-n Gap inch 2-1/18 2-1/18
Coil Length (LXDXW) inch 25X7/8X12 1/16 25X7/8X12 1/16
Swing Motor Model MP24BA MP24BA
Output of Swing Motor W 1.5 1.5
Fuse A 3.15 3.15
Sound Pressure Level(SH/H/M/L) dB (A) 45/39/35/29 45/39/35/29
Sound Power Level(SH/H/M/L) dB (A) 55/49/45/39 55/49/45/39
Dimension (WXHXD) inch 33 1/4X11 3/8X8 7/32 33 1/4X11 3/8X8 7/32
Dimension of Carton Box (LXWXH) inch 36 9/64X11X14 21/64 36 9/64X11X14 21/64
Dimension of Package (LXWXH) inch 36 1/4X11X15 36 1/4X11X15
Net Weight Ib 22.05 22.05
Gross Weight Ib 26.46 27.56
2. Specications
2.1 Specication Sheet
Y6509 / Y6510 Y6754 / Y6755

3
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LI012CO-230P432 LI012HO-230P432
Outdoor Unit Product Code Y6510 Y6755
Compressor Manufacturer/Trademark ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
Compressor Model 1GDY23AXD 1GDY23AXD
Compressor Oil DAPHNE FVC50K DAPHNE FVC50K
Compressor Type Swing Swing
Compressor Locked Rotor Amp (L.R.A) A / /
Compressor RLA A 6.6 6.6
Compressor Power Input W 845 845
Overload Protector KSD115OC or HPC115/95 KSD115OC or HPC115/95
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ºF 61~86 61~86
Ambient temp (cooling) ºF 0~115 0~115
Ambient temp (heating) ºF / -4~75
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ3/8 Φ3/8
Rows-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 29 13/32X1 3/4X22 29 13/32X1 3/4X22
Fan Motor Speed rpm 900 900
Output of Fan Motor W 30 30
Fan Motor RLA A / /
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 1177 1177
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ15 3/4 Φ15 3/4
Defrosting Method /Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 54/-/- 54/-/-
Sound Power Level (H/M/L) dB (A) 64/-/- 64/-/-
Dimension (WXHXD) inch 33 13/32X21 1/4X12 19/32 33 13/32X21 1/4X12 19/32
Dimension of Carton Box (LXWXH) inch 34 37/64X14 3/16X22 13/16 34 37/64X14 3/16X22 13/16
Dimension of Package (LXWXH) inch 34 43/64X14 9/32X23 27/64 34 43/64X14 9/32X23 27/64
Net Weight Ib 80.47 85.98
Gross Weight Ib 87.08 92.59
Refrigerant R410A R410A
Refrigerant Charge oz 47.62 47.62
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.2
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ1/2 Φ1/2
Max Distance Height ft 32.8 32.8
Max Distance Length ft 65.6 65.6
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice. Please refer to the nameplate of the unit.

Y6756
4Technical Information
Service Manual
Model LI018CI-230P432 LI018CO-230P432 LI018HI-230P432 LI018HO-
230P432
Product Code
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) Btu/h 18000(6800~20000) 18000(6800~20000)
Heating Capacity(Min~Max) Btu/h / 19800(7340~23500)
Cooling Power Input(Min~Max) W 1380(450~2150) 1435(450~2150)
Heating Power Input(Min~Max) W / 1730(580~2600)
Cooling Power Current A 6.12 6.37
Heating Power Current A / 7.68
Rated Input W 2600 3000
Rated Current A 10.39 10.39
Air Flow Volume(SH/H/M/L) CFM 559/488/412/335 559/488/412/335
Dehumidifying Volume Pint/h 1.8 1.8
EER (Btu/h)/W 13.00 12.50
COP (Btu/h)/W / 11.45
SEER 20 20
HSPF / 10
Application Area yd227.51-40.66 27.51-40.66
Indoor Unit
Model of indoor unit LI018CI-230P432 LI018HI-230P432
Indoor Unit Product Code Y6511
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ4 3/16X27 13/16 Φ4 3/16X27 13/16
Fan Motor Cooling Speed(SH/H/M/L) r/min 1400/1200/1050/800 1400/1200/1050/800
Fan Motor Heating Speed(SH/H/M/L) r/min / 1400/1200/1100/900
Output of Fan Motor W 60 60
Fan Motor RLA A 0.24 0.24
Fan Motor Capacitor μF / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ9/32 Φ9/32
Row-n Gap inch 2-1/18 2-1/18
Coil Length (LXDXW) inch 28 9/64X1X12 28 9/64X1X12
Swing Motor Model MP35CJ MP35CJ
Output of Swing Motor W 2.5 2.5
Fuse A 3.15 3.15
Sound Pressure Level(SH/H/M/L) dB (A) 47/43/40/39 47/43/40/39
Sound Power Level(SH/H/M/L) dB (A) 57/53/50/49 57/53/50/49
Dimension (WXHXD) inch 38 13/64X11 13/16X8 13/16 38 13/64X11 13/16X8 13/16
Dimension of Carton Box (LXWXH) inch 40 55/64X15X12 40 55/64X15X12
Dimension of Package (LXWXH) inch 41X15X12 39/64 41X15X12 39/64
Net Weight Ib 27.6 27.6
Gross Weight Ib 34.2 34.2
Y6511 / Y6512 Y6756 / Y6757

5
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model of Outdoor Unit LI018CO-230P432 LI018HO-230P432
Outdoor Unit Product Code Y6512 Y6757
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO,LTD.
ZHUHAI LANDA COMPRESSOR
CO,LTD.
Compressor Model QXA-B141zF030A QXA-B141zF030A
Compressor Oil RB68EP RB68EP
Compressor Type Rotary Rotary
Compressor Locked Rotor Amp (L.R.A) A 25 25
Compressor RLA A 12.08 12.08
Compressor Power Input W 1440 1440
Overload Protector 1NT11L-6233 or KSD115OC or
HPC115/95U1
1NT11L-6233 or KSD115OC or
HPC115/95U1
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ºF 61~86 61~86
Ambient temp (cooling) ºF 0~115 0~115
Ambient temp (heating) ºF / -4~75
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ9/32 Φ9/32
Rows-n Gap inch 3-1/18 3-1/18
Coil Length (LXDXW) inch 36 13/16X1 1/2X25 63/64 36 13/16X1 1/2X25 63/64
Fan Motor Speed rpm 800 800
Output of Fan Motor W 60 60
Fan Motor RLA A 0.49 0.49
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 3200 3200
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ20 15/32 Φ20 15/32
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 55/-/- 55/-/-
Sound Power Level (H/M/L) dB (A) 65/-/- 65/-/-
Dimension (WXHXD) inch 38X27 9/16X15 19/32 38X27 9/16X15 19/32
Dimension of Carton Box (LXWXH) inch 40 25/64X17 29/32X28 15/16 40 25/64X17 29/32X28 15/16
Dimension of Package (LXWXH) inch 40 33/64X18 5/16X29 33/64 40 33/64X18 5/16X29 33/64
Net Weight Ib 102.5 105.8
Gross Weight Ib 112.5 115.8
Refrigerant R410A R410A
Refrigerant Charge oz 56.44 56.44
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.2
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ5/8 Φ5/8
Max Distance Height ft 32.8 32.8
Max Distance Length ft 82 82
Note:The connection pipe applies metric diameter.

6Technical Information
Service Manual
Model LI024CI-230P432 LI024CO-230P432 LI024HI-230P432 LI024HO-230P432
Product Code
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) Btu/h 22000(6800-29700) 22000(6824~27296)
Heating Capacity(Min~Max) Btu/h / 23000(6824~30708)
Cooling Power Input(Min~Max) W 1650(450~3000) 1830(450~3000)
Heating Power Input(Min~Max) W / 2000(450~3000)
Cooling Power Current A 7.21 8.05
Heating Power Current A / 8.35
Rated Input W 3000 3000
Rated Current A 14.49 14.49
Air Flow Volume(SH/H/M/L) CFM 706/647/589/530 706/647/589/530
Dehumidifying Volume Pint/h 2 4.23
EER (Btu/h)/W 13.30 12.02
COP (Btu/h)/W / 11.50
SEER 20 20
HSPF / 9
Application Area yd232.29-50.23 32.29-50.23
Indoor Unit
Model of indoor unit LI024CI-230P432 LI024HI-230P432
Indoor Unit Product Code Y6513 Y6758
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch ΦΦ4 1/4X32 7/10 Φ4 1/4X32 7/10
Fan Motor Cooling Speed(SH/H/
M/L) r/min 1300/1100/900/850 1300/1100/900/850
Fan Motor Heating Speed(SH/H/
M/L) r/min / 1300/1100/1000/900
Output of Fan Motor W 60 60
Fan Motor RLA A 0.38 0.38
Fan Motor Capacitor μF / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ9/32 Φ9/32
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 33 1/4X1X13 1/2 33 1/4X1X13 1/2
Swing Motor Model MP35CJ MP35CJ
Output of Swing Motor W 2.5 2.5
Fuse A 3.15 3.15
Sound Pressure Level(SH/H/M/L) dB (A) 48/44/40/36 48/44/40/36
Sound Power Level(SH/H/M/L) dB (A) 58/54/50/46 58/54/50/46
Dimension (WXHXD) inch 42 7/16X12 51/64X9 11/16 42 7/16X12 51/64X9 11/16
Dimension of Carton Box
(LXWXH) inch 45 5/64X16 9/64X13 3/16 45 5/64X16 9/64X13 3/16
Dimension of Package (LXWXH) inch 45 13/64X16 17/64X13 25/32 45 13/64X16 17/64X13 25/32
Net Weight Ib 34.2 34.2
Gross Weight Ib 41.9 41.9
Y6513 / Y6514 Y6758 / Y6759

7
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LI024CO-230P432 LI024HO-230P432
Outdoor Unit Product Code Y6514 Y6759
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO,LTD.
ZHUHAI LANDA COMPRESSOR
CO,LTD.
Compressor Model QXAS-D23zX090 QXAS-D23zX090A
Compressor Oil RB68EP RB68EP
Compressor Type Rotary Rotary
Compressor Locked Rotor Amp (L.R.A) A 40 25
Compressor RLA A 14.67 14.67
Compressor Power Input W 2450 2550
Overload Protector 1NT11L-6233/HPC 115/95 /KSD115OC1NT11L-6233/HPC 115/95 /
KSD115OC
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ºF 61~86 61~86
Ambient temp (cooling) ºF 0~115 0~115
Ambient temp (heating) ºF / -4~75
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ9/32 Φ9/32
Rows-n Gap inch 3-1/18 2-1/18
Coil Length (LXDXW) inch 35 9/32X2 1/2X29 7/16 37 31/64X1 1/2X19/32
Fan Motor Speed rpm 820 820
Output of Fan Motor W 92 92
Fan Motor RLA A 0.65 0.65
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 4000 2354
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ21 21/32 Φ21 21/32
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IPX4
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 59/-/- 59/-/-
Sound Power Level (H/M/L) dB (A) 69/-/- 69/-/-
Dimension (WXHXD) inch 38 37/64X31 7/64X16 13/16 38 37/64X31 7/64X16 13/16
Dimension of Carton Box (LXWXH) inch 42 33/64X19X33 42 33/64X19X33
Dimension of Package (LXWXH) inch 42 41/64X19 7/32X33 21/32 42 41/64X19 7/32X33 21/32
Net Weight Ib 147.7 142.2
Gross Weight Ib 158.8 153.2
Refrigerant R410A R410A
Refrigerant Charge oz 81.1 77.6
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.5
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ5/8 Φ5/8
Max Distance Height ft 32.8 32.8
Max Distance Length ft 82 82
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

8Technical Information
Service Manual
2.2 Operation Characteristic Curve
01020304050607090010 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
CoolingHeating
24K
24K
18K
12K
18K
12K
Conditions
Indoor:DB80°F/WB66.9°F
Outdoor:DB95°F
Indoor air flow:Super High
Pipe length:24.6ft
Conditions
Indoor:DB
70°F/ WB60 °F
Outdoor:DB19.94°F/WB19.04°F
Indoor air flow:Super High
Pipe length: 24.6ft
2.3 Capacity Variation Ratio According to Temperature
Cooling
Cooling
Heating
Heating
-4 514
110
100
90
80
70
60
50
40
23 32 41 50
Outdoor temp.(°F)
Capacity ratio (%)
89.6 91.4 93.295 96.8 98.6 100.4 102.2 109.4 104 105.8 107.6
100
105
95
90
85
80
75
70
65
60
55
50
Outdoor temp.(°F)
Capacity ratio (%)
Conditions
Indoor:DB 80°F /WB66.9 °F
Outdoor:DB95°F
Indoor air flow:Super High
Pipe length:
24.6ft
Conditions
Indoor:DB 70°F
Outdoor:DB19.94°F/WB19.04°F
Indoor air flow:Super High
Pipe length: 24.6ft

9
Technical Information
Service Manual
2.5 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling
condition(°F) (DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(rps)
Indoor Outdoor P (PSIG) T1 (°F) T2 (°F)
80/66.9 95/-
12K 0.9~1.0 in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4 Super High High 72
18K 130~145 in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4 Super High High 73
24K 130~145 in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4 Super High High 75
Rated heating
condition(°F) (DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(rps)
Indoor Outdoor P (PSIG) T1 (°F) T2 (°F)
70/60 19.94/19.04
12K 2.5~2.8 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 77
18K 507~551 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 75
24K 3.5~3.8 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 80
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 24.6ft.
Cooling:
Heating:
2.4 Noise Curve
24K
18K 12K
20
30
40
50
LMHSH
Indoor fan motor rating speed
Noise/dB(A)
46
48
50
52
54
56
58
60
20 30 40 50 60 70 80 90 100
Compressor frequency(Hz)
Noise dB(A)
Heating
Cooling
Indoor side noise Outdoor side noise

10 Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
WD
H
427713/64
5 1/2
7 1/2
1 1/2 1 1/2
Φ2 3/16 Φ2 3/16
3 7/64
6
1 21/32
8 7/64 27 7 21/64
Φ2 3/4 Φ2 3/4
Unit:inch
Unit:inch
18K
24K
12K
Models W H D
12K 33 1/4 11 3/8 8 7/32
18K 38 13/64 11 13/16 8 13/16
24K 42 7/16 12 51/64 9 11/16
4 43/64 7 1/4
21 21/64
Φ2 3/16 Φ2 3/16
1 3/8 1 3/8
53 19/64

11
Technical Information
Service Manual
3.2 Outdoor Unit
Unit: inch
35
13 13/32
27 9/16
15 19/32
38
14 21/64
22
18K
24K
Unit:inch
14 37/64
31 7/64
16 13/16
15 9/16
38 37/64
24
36 7/32

12 Technical Information
Service Manual
23 5/16
11 1/4
30 10
12 19/32
33 25/64
23 5/16
12K
Unit:inch

13
Technical Information
Service Manual
4. Refrigerant System Diagram
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer Electron
expansion
valve
Strainer
Accumlator
Compressor
Capillary
Indoor unit Outdoor unit
Accumlator
COOLING
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Compressor
Strainer
Capillary
Electron
expansion
valve
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:5/8"(24K)
Gas pipe:1/2"(12/18K)
Cooling only model
Cooling and heating model

14 Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
● Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
STEPPING
CAP
BLOCK
TERMINAL
G
EVAPORATOR
FAN MOTOR
JUMP AP2: MAIN BOARD
YEGN
BK
BN
YEGN
N
3
2
N(1)
XT1
BU
AC-L
COM-OUT
COM-MANUAL
CONNECTOR
AP3
WIRED
MOTOR
T-SENSORDISP2DISP1
RT1
θ
AP1
ROOM TUBE TEMP.SENSOR TEMP.SENSOR
DISPLAY BOARD
RECEIVER AND
θ
RT2
DC-MOTOR
M1
SWING-UD
M2
ELECTRIC BOX G
CONTROLLER
WARNING
OUTDOOR UNIT
WH(BU)
BK
RD(BN)
GN(YEGN)
CONNECTING
CABLE
63610000442
Please don't touch any electronic
component and terminal when the
machine is running , stopping or has
been powered off for less than 3
minutes to prevent electric shock !
LI018CI-230P432
LI018HI-230P432
LI024CI-230P432

15
Technical Information
Service Manual
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16 Technical Information
Service Manual
● Outdoor Unit
Model: LI018CO-230P432
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17
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Service Manual
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