Lennox LI012CI-170P432-1 User manual

Thank you for selecting LENNOX air conditioners.
Service Manual
Models: LI012CI-170P432-1 / LI012CO-170P432-1
LI012HI-170P432-1 / LI012HO-170P432-1
LI018CI-170P432-1 / LI018CO-170P432-1
LI018HI-170P432-1 / LI018HO-170P432-1
LI024CI-170P432-1 / LI024CO-170P432-1
LI024HI-170P432-1 / LI024HO-170P432-1
(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

LI024CI-170P432-1
1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
LI012CI-170P432-1
LI018CI-170P432-1
LI012HI-170P432-1
LI018HI-170P432-1
LI024HI-170P432-1
Outdoor Unit
LI012CO-170P432-1
LI012HO-170P432-1
LI018CO-170P432-1
LI018HO-170P432-1
LI024CO-170P432-1
LI024HO-170P432-1

LI018CI-170P432-1
2Technical Information
Service Manual
Model List:
No Model Indoor model Outdoor model
1LI012CI-170P432-1
LI012CO-170P432-1 LI012CI-170P432-1 LI012CO-170P432-1
2LI018CO-170P432-1 LI018CI-170P432-1 LI018CO-170P432-1
3LI024CI-170P432-1
LI024CO-170P432-1 LI024CI-170P432-1 LI024CO-170P432-1
4LI012HI-170P432-1
LI012HO-170P432-1 LI012HI-170P432-1 LI012HO-170P432-1
5LI018HI-170P432-1
LI018HO-170P432-1 LI018HI-170P432-1 LI018HO-170P432-1
6 LI024HI-170P432-1
LI024HO-170P432-1 LI024HI-170P432-1 LI024HO-170P432-1
Remote Controller
YAA1FB

3
Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model LI012CI-170P432-1
LI012CO-170P432-1 LI012HI-170P432-1
LI012HO-170P432-1
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-170P432-1 LI012HI-170P432-1
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-170P432-1 LI012HO-170P432-1
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-170P432-1
LI018CO-170P432-1 LI018HI-170P432-1 LI018HO-170P432-1
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-170P432-1 LI018HI-170P432-1
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-170P432-1 LI018HO-170P432-1
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-170P432-1
LI024CO-170P432-1 LI024HI-170P432-1 LI024HO-170P432-1
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-170P432-1 LI024HI-170P432-1
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