Lennox LI018CI-180P432 User manual

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Service Manual
Models: LI018CI-180P432 / LI018CO-180P432
LI018HI-180P432 / LI018HO-180P432
(Refrigerant:R410A)

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 ........................................................................................ 4
2.3 Capacity Variation Ratio According to Temperature ......................................................... 4
2.4 Noise Curve...................................................................................................................... 5
2.5 Cooling and Heating Data Sheet in Rated Frequency ..................................................... 5
3. Outline Dimension Diagram........................................................................ 6
3.1 Indoor Unit........................................................................................................................ 6
3.2 Outdoor Unit ..................................................................................................................... 7
4. Refrigerant System Diagram...................................................................... 8
5. Electrical Part........................................................................................................... 9
5.1 Wiring Diagram................................................................................................................. 9
5.2 PCB Printed Diagram ......................................................................................................11
6. Function and Control...................................................................................... 13
6.1 Remote Controller Introduction of YV1FB7F................................................................. 13
6.2 Brief Description of Modes and Functions...................................................................... 17
Part Ⅱ: Installation and Maintenance ................................................. 26
7. Notes for Installation and Maintenance.......................................... 26
8. Installation................................................................................................................ 29
8.1 Installation Dimension Diagram...................................................................................... 29
8.2 Installation Parts-checking ............................................................................................ 31
8.3 Selection of Installation Location.................................................................................... 31
8.4 Requirements for Electric Connection............................................................................ 31
8.5 Installation of Indoor Unit................................................................................................ 31
8.6 Installation of Outdoor Unit............................................................................................. 34
8.7 Vacuum Pumping and Leak Detection ........................................................................... 35
8.8 Check after Installation and Test Operation ................................................................... 35

Service Manual
Table of contents Table of contents
9. Maintenance............................................................................................................36
9.1 Precautions before Maintenance....................................................................................36
9.2 Error Code List ...............................................................................................................37
9.3 Troubleshooting for Main Malfunction ............................................................................40
9.4 Troubleshooting for Normal Malfunction.........................................................................55
10. Exploded View and Parts List ..............................................................57
10.1 Indoor Unit....................................................................................................................57
10.2 Outdoor Unit .................................................................................................................59
11. Removal Procedure.......................................................................................63
11.1 Removal Procedure of Indoor Unit ...............................................................................63
11.2 Removal Procedure of Outdoor Unit ............................................................................68
Appendix:........................................................................................................................73
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................73
Appendix 2: Conguration of Connection Pipe.....................................................................73
Appendix 3: Pipe Expanding Method ...................................................................................74
Appendix 4: List of Resistance for Temperature Sensor ......................................................75

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
Part Ⅰ: Technical Information
LI018CI-180P432
LI018HI-180P432
Outdoor Unit:
LI018CO-180P432
LI018HO-180P432
Remote Controller:
YAA1FB

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model LI018CI-180P432
LI018CO-180P432
LI018HI-180P432
LI018HO-180P432
Product Code Y8371
Y8372
Y8383
Y8384
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(3412~20472) 18000(3412~20472)
Heating Capacity(Min~Max) Btu/h / 19800(3412~21837)
Cooling Power Input(Min~Max) W 1820(80~2350) 1820(80~2350)
Heating Power Input(Min~Max) W / 2090(220~2350)
Cooling Power Current A 8.1 8.1
Heating Power Current A / 8.5
Rated Input W 2350 2350
Rated Current A 12 12
Air Flow Volume(SH/H/M/L) CFM 500/441/383/294 500/441/383/294
Dehumidifying Volume Pint/h 3.80 3.80
EER (Btu/h)/W 9.89 9.89
COP (Btu/h)/W / 9.47
SEER 18.00 18.00
HSPF / 9.00
Application Area yd227.50-40.66 27.50-40.66
Indoor Unit
Model of indoor unit LI018CI-180P432 LI018HI-180P432
Indoor Unit Product Code Y8371 Y8383
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 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 35
Fan Motor RLA A 0.37 0.37
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) 47/44/40/35 47/44/40/35
Sound Power Level(SH/H//M/L) dB (A) 57/54/50/45 57/54/50/45
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 30.9 30.9
Gross Weight Ib 37.5 37.5