Lennox LI012CI-160P432-1 User manual

Thank you for selecting LENNOX air conditioners.
Service Manual
Models: LI012CI-160P432-1 / LI012CO-160P432-1
LI012HI-160P432-1 / LI012HO-160P432-1
LI018CI-160P432-1 / LI018CO-160P432-1
LI018HI-160P432-1 / LI018HO-160P432-1
LI024CI-160P432-1 / LI024CO-160P432-1
LI024HI-160P432-1 / LI024HO-160P432-1
(Refrigerant:R410A)

Service Manual
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................3
2.1 Specication Sheet...........................................................................................................3
2.2 Operation Characteristic Curve ........................................................................................9
2.3 Capacity Variation Ratio According to Temperature .........................................................9
2.4 Cooling and Heating Data Sheet in Rated Frequency ...................................................10
2.5 Noise Curve....................................................................................................................11
3. Outline Dimension Diagram......................................................................12
3.1 Indoor Unit......................................................................................................................12
3.2 Outdoor Unit ...................................................................................................................13
4. Refrigerant System Diagram....................................................................15
5. Electrical Part.........................................................................................................17
5.1 Wiring Diagram...............................................................................................................17
5.2 PCB Printed Diagram .....................................................................................................21
6. Function and Control......................................................................................25
6.1 Remote Controller Introduction .....................................................................................25
6.2 Brief Description of Modes and Functions......................................................................29
Part Ⅱ: Installation and Maintenance .................................................39
7. Notes for Installation and Maintenance..........................................39
8. Installation................................................................................................................42
8.1 Installation Dimension Diagram......................................................................................42
8.2 Installation Parts-checking ............................................................................................44
8.3 Selection of Installation Location....................................................................................44
8.4 Requirements for Electric Connection ...........................................................................44
8.5 Installation of Indoor Unit................................................................................................44
8.6 Installation of Outdoor Unit.............................................................................................47
8.7 Vacuum Pumping and Leak Detection ...........................................................................48
8.8 Check after Installation and Test Operation ...................................................................48
9. Maintenance............................................................................................................49
9.1 Error Code List ...............................................................................................................49
9.2 Troubleshooting for Main Malfunction ............................................................................56
9.3 Troubleshooting for Normal Malfunction.........................................................................74
Table of Contents

Service Manual
10. Exploded View and Parts List ..............................................................76
10.1 Indoor Unit....................................................................................................................76
10.2 Outdoor Unit .................................................................................................................82
11. Removal Procedure.......................................................................................92
11.1 Removal Procedure of Indoor Unit ...............................................................................92
11.2 Removal Procedure of Outdoor Unit ..........................................................................102
Appendix:......................................................................................................................118
Appendix 1: Reference Sheet of Celsius and Fahrenheit ..................................................118
Appendix 2: Conguration of Connection Pipe................................................................... 118
Appendix 3: Pipe Expanding Method .................................................................................119
Appendix 4: List of Resistance for Temperature Sensor ....................................................120
Table of Contents

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
LI012CI-160P432-1
LI018CI-160P432-1
LI024CI-160P432-1
LI012HI-160P432-1
LI018HI-160P432-1
LI024HI-160P432-1
Outdoor Unit
LI012CO-160P432-1
LI012HO-160P432-1
LI018CO-160P432-1
LI018HO-160P432-1
LI024CO-160P432-1
LI024HO-160P432-1

2Technical Information
Service Manual
Model List:
No Model Indoor model Outdoor model
1LI012CI-160P432-1
LI012CO-160P432-1 LI012CI-160P432-1 LI012CO-160P432-1
2 LI018CI-160P432-1
LI018CO-160P432-1 LI018CI-160P432-1 LI018CO-160P432-1
3LI024CI-160P432-1
LI024CO-160P432-1 LI024CI-160P432-1 LI024CO-160P432-1
4LI012HI-160P432-1
LI012HO-160P432-1 LI012HI-160P432-1 LI012HO-160P432-1
5LI018HI-160P432-1
LI018HO-160P432-1 LI018HI-160P432-1 LI018HO-160P432-1
6 LI024HI-160P432-1
LI024HO-160P432-1 LI024HI-160P432-1 LI024HO-160P432-1
Remote Controller
YAA1FB

3
Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model LI012CI-160P432-1
LI012CO-160P432-1
LI012HI-160P432-1
LI012HO-160P432-1
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity Btu/h 12000 12000
Heating Capacity Btu/h / 13000
Cooling Power Input W 1256 1297
Heating Power Input W / 1172
Cooling Power Current A 5.5 5.6
Heating Power Current A / 5.1
Rated Input W 1450 1500
Rated Current A 6.3 6.5
Air Flow Volume(SH/H/M/L) CFM 371/294/235/182 371/294/235/182
Dehumidifying Volume Pint/h 1.4 1.4
EER (Btu/h)/W 9.55 9.25
COP (Btu/h)/W / 11.09
SEER 17 17
HSPF / 9
Application Area yd219.14-28.7 19.14-28.7
Indoor Unit
Model of indoor unit LI012CI-160P432-1 LI012HI-160P432-1
Indoor Unit Product Code 20Y03 20Y11
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ3 55/64X25 Φ3 55/64X25
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1350/1200/1000/800/- 1350/1200/1000/800/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min / 1350/1200/1000/900/-
Output of Fan Motor W 20 20
Fan Motor RLA A 0.31 0.31
Fan Motor Capacitor μF 1.5 1.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ3/16 Φ3/16
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 25X57/64X12 3/64 25X57/64X12 3/64
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/SL) dB (A) 42/39/34/28/- Cooling:42/39/34/28/-
Heating:43/39/34/30/-
Sound Power Level (SH/H/M/L/SL) dB (A) 52/49/44/38/- Cooling:52/49/44/38/-
Heating:53/49/44/40/-
Dimension (WXHXD) inch 33 1/4X11 3/8X8 1/4 33 1/4X11 3/8X8 1/4
Dimension of Carton Box (LXWXH) inch 36 1/8X11X14 5/16 36 1/8X11X14 5/16
Dimension of Package (LXWXH) inch 36 1/4X11X15 36 1/4X11X15
Net Weight Ib 22.1 22.1
Gross Weight Ib 26.5 26.5

4Technical 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 LI012CO-160P432-1 LI012HO-160P432-1
Outdoor Unit Product Code 20Y04 20Y12
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO., LTD
Compressor Model QXF-A102zE190B QXF-A102zE190B
Compressor Oil FW68DA FW68DA
Compressor Type Rotary Rotary
Compressor L.R.A. A / /
Compressor RLA 6.6 6.6
Compressor Power Input W 1023 1023
Overload Protector HPC115/95U1/KSD115ºC HPC115/95U1/KSD115ºC
Throttling Method Capillary Capillary
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 Φ1/16 Φ5/16
Rows-n Gap inch 1-1/16 1-1/16
Coil Length (LXDXW) inch 28 5/16X1/2X19 1/2 36 21/32X3/4X21 21/32
Fan Motor Speed rpm 900 900
Output of Fan Motor W 30 30
Fan Motor RLA A 0.37 0.37
Fan Motor Capacitor μF 2.5 2.5
Air Flow Volume of Outdoor Unit CFM 942 942
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ15 33/64 Φ15 33/64
Defrosting Method /Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Design Pressure(High) PSIG 550 550
Design Pressure(Low) PSIG 240 240
Sound Pressure Level (H/M/L) dB (A) 50/-/- 50/-/-
Sound Power Level (H/M/L) dB (A) 60/-/- 60/-/-
Dimension (WXHXD) inch 30 9/16X21 1/4X12 5/8 30 9/16X21 1/4X12 5/8
Dimension of Carton Box (LXWXH) inch 32 9/32X13 63/64X22 27/32 32 9/32X13 63/64X22 27/32
Dimension of Package (LXWXH) inch 32 13/32X14 3/32X23 27/64 32 13/32X14 3/32X23 27/64
Net Weight Ib 60.6 62.8
Gross Weight Ib 66.2 68.4
Refrigerant R410A R410A
Refrigerant Charge oz 25.0 28.2
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.2
Outer Diameter Liquid Pipe inch 1/4 1/4
Outer Diameter Gas Pipe inch 3/8 3/8
Max Distance Height ft 32.8 32.8
Max Distance Length ft 65.6 65.6
Note:The connection pipe applies metric diameter.

5
Technical Information
Service Manual
Model LI018CI-160P432-1
LI018CO-160P432-1
LI018HI-160P432-1
LI018HO-160P432-1
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 17400(4100~18000) 17400(4094~20000)
Heating Capacity(Min~Max) Btu/h / 18000(4100~21000)
Cooling Power Input(Min~Max) W 1889(200~2300) 2040(200~2300)
Heating Power Input(Min~Max) W / 1758(300~2400)
Cooling Power Current A 7.1 9
Heating Power Current A / 7.8
Rated Input W 2300 2400
Rated Current A 10.5 10.5
Air Flow Volume(SH/H/M/L) CFM 471/412/383/335/- 471/412/383/335/-
Dehumidifying Volume Pint/h 3.80 3.80
EER (Btu/h)/W 9.21 8.53
COP (Btu/h)/W / 10.24
SEER 17.5 16
HSPF / 9
Application Area yd227.50-40.66 27.50-40.66
Indoor Unit
Model of indoor unit LI018CI-160P432-1 LI018HI-160P432-1
Indoor Unit Product Code 20Y05 20Y13
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ4 3/16X27 13/16 Φ4 1/4X32 11/16
Fan Motor Cooling Speed(SH/H/M/L) r/min 1350/1200/1050/900 1350/1200/1050/900
Fan Motor Heating Speed(SH/H/M/L) r/min / 1300/1200/1100/900
Output of Fan Motor W 35 60
Fan Motor RLA A 0.40 0.40
Fan Motor Capacitor μF 2.5 2.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ5/16 Φ5/16
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 28 1/8X1X12 28 1/8X1X12
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) 46/44/40/35 Cooling:47/44/40/35
Heating:46/44/40/35
Sound Power Level(SH/H//M/L) dB (A) 56/54/50/45 Cooling:57/54/50/45
Heating:56/54/50/45
Dimension (WXHXD) inch 38 3/16X11 13/16X8 13/16 38 3/16X11 13/16X8 13/16
Dimension of Carton Box (LXWXH) inch 40 7/8X15X12 40 7/8X15X12
Dimension of Package (LXWXH) inch 41X15X12 5/8 41X15X12 5/8
Net Weight Ib 29.8 29.8
Gross Weight Ib 35.3 35.3

6Technical 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-160P432-1 LI018HO-160P432-1
Outdoor Unit Product Code 20Y06 20Y16
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO.,LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXF-A108zH190AA QXA-B141zF030A
Compressor Oil FW68DA or equivalent FW68DA or equivalent
Compressor Type Rotary Rotary
Compressor Locked Rotor Amp (L.R.A) A / 25.00
Compressor RLA A 8.5 10.20
Compressor Power Input W 995 1410
Overload Protector KSD115OC
HPC 115/95U1
1NT11L-6233 KSD115OC
HPC 115/95
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ºF 60.8~86 60.8~86
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 33 5/8X26X7/8 33 5/8X26X7/8
Fan Motor Speed rpm 880 820
Output of Fan Motor W 40 60
Fan Motor RLA A 0.70 0.70
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 1412 1766
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ20 1/2 Φ20 1/2
Defrosting Method /Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Permissible Excessive Operating
Pressure for the Discharge Side ISPG 550 550
Permissible Excessive Operating
Pressure for the Suction Side ISPG 240 240
Sound Pressure Level (H/M/L) dB (A) 56/-/- 56/-/-
Sound Power Level (H/M/L) dB (A) 66/-/- 66/-/-
Dimension (WXHXD) inch 35 3/8X23 1/2X14 7/8 35 29/32X25 7/16X14 11/16
Dimension of Carton Box (LXWXH) inch 37 3/16X16 7/16X24 13/16 37 51/64X16 5/8X26 49/64
Dimension of Package (LXWXH) inch 37 5/16X16 9/16X25 3/8 37 29/32X16 3/16X27 9/16
Net Weight Ib 81.6 87.1
Gross Weight Ib 88.2 93.7
Refrigerant R410A R410A
Refrigerant Charge oz 37 42.3
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 82 82
Note:The connection pipe applies metric diameter.

7
Technical Information
Service Manual
Model LI024CI-160P432-1
LI024CO-160P432-1
LI024HI-160P432-1
LI024HO-160P432-1
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 22000
Heating Capacity(Min~Max) Btu/h / 24000
Cooling Power Input(Min~Max) W 2010 1950
Heating Power Input(Min~Max) W / 2070
Cooling Power Current A 8.50 8.50
Heating Power Current A / 8.50
Rated Input W 2500 2900
Rated Current A 11.00 11.00
Air Flow Volume(SH/H/M/L) CFM 677/588/471/412 677/588/471/412
Dehumidifying Volume Pint/h 2 2
EER (Btu/h)/W 10.95 11.25
COP (Btu/h)/W / 11.75
SEER 19.00 19.00
HSPF / 10
Application Area yd227.50-40.66 27.50-40.66
Indoor Unit
Model of indoor unit LI024CI-160P432-1 LI024HI-160P432-1
Indoor Unit Product Code 20Y07 20Y17
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ4 1/4X32 43/64 Φ4 1/4X32 43/64
Fan Motor Cooling Speed(SH/H/M/L) r/min 1300/1150/1000/850 1300/1150/1000/850
Fan Motor Heating Speed(SH/H/M/L) r/min / 1300/1150/1000/850
Output of Fan Motor W 30 30
Fan Motor RLA A 0.55 0.55
Fan Motor Capacitor μF 3 3
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ17/64 Φ17/64
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 33 1/4×1×13 1/2 33 1/4×1×13 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) 49/45/41/37 49/45/41/37
Sound Power Level(SH/H//M/L) dB (A) 59/55/51/47 59/55/51/47
Dimension (WXHXD) inch 42 7/16X12 13/16X9 11/16 42 7/16X12 13/16X9 11/16
Dimension of Carton Box (LXWXH) inch 45X16 1/8X13 3/16 45X16 1/8X13 3/16
Dimension of Package (LXWXH) inch 45 3/16X16 1/4X13 3/4 45 3/16X16 1/4X13 3/4
Net Weight Ib 37.5 37.5
Gross Weight Ib 45.2 45.2

8Technical 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 LI024CO-160P432-1 LI024HO-160P432-1
Outdoor Unit Product Code 20Y08 20Y18
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO.,LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXFS-B181zX030AA QXFS-B181zX030AA
Compressor Oil FW68DA or equivalent FW68DA or equivalent
Compressor Type Twin Rotary Twin Rotary
Compressor Locked Rotor Amp (L.R.A) A 25.00 25.00
Compressor RLA A 13.00 13.00
Compressor Power Input W 1635 1635
Overload Protector 1NT11L-6233 KSD115℃HPC
115/95
1NT11L-6233 KSD115℃HPC
115/95
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 Φ17/64 Φ17/64
Rows-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 31 21/32X1 1/2X24 1/4 31 21/32X1 1/2X24 1/4
Fan Motor Speed rpm 800 800
Output of Fan Motor W 60 60
Fan Motor RLA A 0.65 0.65
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 1883 1883
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ20 15/32 Φ20 15/32
Defrosting Method /Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IPX4 IPX4
Permissible Excessive Operating
Pressure for the Discharge Side PSIG 550 550
Permissible Excessive Operating
Pressure for the Suction Side PSIG 240 240
Sound Pressure Level (H/M/L) dB (A) 59/-/- 59/-/-
Sound Power Level (H/M/L) dB (A) 69/-/- 69/-/-
Dimension (WXHXD) inch 35 29/32X25 7/16X14 11/16 35 29/32X25 7/16X14 11/16
Dimension of Carton Box (LXWXH) inch 37 51/64X16 5/8X26 49/64 37 51/64X16 5/8X26 49/64
Dimension of Package (LXWXH) inch 37 29/32X16 3/16X27 9/16 37 29/32X16 3/16X27 9/16
Net Weight Ib 94.8 97.0
Gross Weight Ib 101.4 103.6
Refrigerant R410A R410A
Refrigerant Charge oz 52.9 52.9
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.

9
Technical Information
Service Manual
0
09070605040302010 1
10
210010908070605040302010
80
11
10
9
8
7
6
5
4
3
2
1
0
11
10
9
8
7
6
5
4
3
2
1
0
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor: DB95˚F
Indoor air flow : High
220V
230V
240V
220V
230V
240V
Current (A)
Current (A)
Compressor frequency(Hz) Compressor frequency(Hz)
89 91 93 95 97 99 100 102 109.45 14 23 32104 106 108
100
105
95
90
85
80
75
70
65
60
55
50
Outdoor temp. (˚F)
110
100
90
80
70
60
50
40
Outdoor temp. (˚F)
Capacity ratio (%) Capacity ratio (%)
Pipe lengt : 24.6ft
41 44.6 50
• Conditions
Indoor : DB70˚F/WB60˚F
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
• Conditions
Indoor : DB70˚F/WB60˚
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor: DB95˚F
Indoor air flow : High
Pipe lengt : 24.6ft
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
Cooling 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 98.6 100.4 105 115 108 110 112
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
Heating operation ambient temperature range is -4°F~75°F

10 Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Cooling:
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 123.2~145 in:46~52
out:52~57
in:122~176
out:99~109 Suprt High High 58
80/66.9 95/- 18K 130~142 in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4 Super High High 73
80/66.9 95/- 24K 130~142 in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4 Super High High 75
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.
Heating:
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 362.3~435 in:122~176
out:99~109
in:34~37
out:36~41 Super High High 56
70/60 19.94/19.04 18K 507~550 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 75
70/60 19.94/19.04 24K 507~550 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 80

11
Technical Information
Service Manual
20
30
40
50
LM H
18K
24K
SH
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
2.5 Noise Curve
Indoor side noise when blowing Outdoor side noise when blowing
Indoor fan motor rotating speed Compressor frequency(Hz)
Noise/dB(A)
50
60
30
40
20
Low Middle High Super High
40
42
44
46
48
50
52
54
56
20 4030 50 60 70 80
90
Noise dB(A)
Cooling
Heating
LI012CI-160P432-1/LI012CO-160P432-1
LI012HI-160P432-1/LI012HO-160P432-1
LI018CI-160P432-1/LI018CO-160P432-1
LI018HI-160P432-1/LI018HO-160P432-1
LI024CI-160P432-1/LI024CO-160P432-1
LI024HI-160P432-1/LI024HO-160P432-1

12 Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
W
D
H
Φ2 3/16 Φ2 3/16
4 11/16 21 5/16 7 1/4
3 5/16
5
1 3/8 1 3/8
427 7 3/16
5 1/2
7 1/2
1 1/2
Φ2 3/16 Φ2 3/16
3 1/8
6
1 11/16
8 1/8 27 7 5/16
Φ2 3/4 Φ2 3/4
MODEL W H D
12K 33 1/4 11 3/8 8 1/4
18K 38 3/16 11 13/16 8 13/16
24K 42 7/16 12 13/16 9 11/16
Unit:inch
QB LI012CI-160P432-1
LI012HI-160P432-1
LI024CI-160P432-1
LI024HI-160P432-1
LI018CI-160P432-1
LI018HI-160P432-1

13
Technical Information
Service Manual
3.2 Outdoor Unit
Unit:inch
30 9/16
21 1/4
12 5/8
28
11 1/4
20
10 1/8
LI012CO-160P432-1 LI012HO-160P432-1
35 3/8
32 3/16
21 2/3
13 1/2
12
23 1/2
14 7/8
Unit:inch
LI018CO-160P432-1

14 Technical Information
Service Manual
LI018HO-160P432-1 LI024CO-160P432-1 LI024HO-160P432-1
33 7/64
12 11/64
25 7/16
14 11/16
35 29/32
22 29/32
13 47/64
Unit:inch

15
Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:1/2" for 18K
Gas pipe:5/8" for 24K
Indoor unit
Outdoor unit
Accumlator
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer
Capillary
Compressor
Electron
expansion
valve
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 Strainer
Capillary
Accumlator
Compressor
Electron
expansion
valve
Cooling model
Heating model
LI018CI-160P432-1/LI018CO-160P432-1 LI018HI-160P432-1/LI018HO-160P432-1
LI024CI-160P432-1/LI024CO-160P432-1 LI024HI-160P432-1/LI024HO-160P432-1

16 Technical Information
Service Manual
Cooling only models
Cooling and heating models
Indoor unit Outdoor unit
Accumlator
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer
Capillary
Compressor
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 Strainer
Capillary
Accumlator
Compressor
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:3/8"
LI012CI-160P432-1/LI012CO-160P432-1
LI012HI-160P432-1/LI012HO-160P432-1

17
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.
600007000575
67(33,1*
&$3
%/2&.
7(50,1$/
*
(9$325$725
-803
$30$,1%2$5'
<(*1
%.
%1
<(*1
1


1
;7
%8
$&/
&20287
02725
287'22581,7
76(1625 ',63',63
57

$3
5220 78%( 7(036(1625 7(036(1625
',63/$<%2$5'
5(&(,9(5$1'

57
6:,1*8'
0
(/(&75,&%2;
*
:+%8
%.
5'%1
*1<(*1
:,),
:,),02'8/(
237,21$/
;
0
&200$18$/
&211(&725
$3
:,5('
&21752//(5
3*)3*
)$1
02725
LI012CI-160P432-1 LI018CI-160P432-1 LI024CI-160P432-1
LI012HI-160P432-1 LI018HI-160P432-1 LI024HI-160P432-1