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