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

3
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-180P432 LI018HO-180P432
Outdoor Unit Product Code Y8372 Y8384
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 ºC 17~32 17~32
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 Φ5/16 Φ3/8
Rows-n Gap inch 1-1/16 1-1/16
Coil Length (LXDXW) inch 34 11/16X26X7/8 33 5/8X26X7/8
Fan Motor Speed rpm 800 800
Output of Fan Motor W 60 60
Fan Motor RLA A 0.52 0.52
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 1883 1883
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) 57/-/- 57/-/-
Sound Power Level (H/M/L) dB (A) 67/-/- 67/-/-
Dimension (WXHXD) inch 38X27 9/16X15 5/8 38X27 9/16X15 5/8
Dimension of Carton Box (LXWXH) inch 40 3/8X17 7/8X29 40 3/8X17 7/8X29
Dimension of Package (LXWXH) inch 40 1/2X18X29 1/2 40 1/2X18X29 1/2
Net Weight Ib 91.5 97
Gross Weight Ib 101.4 106.9
Refrigerant R410A R410A
Refrigerant Charge oz 33.51 45.86
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.16 0.2
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ1/2 Φ1/2
Max Distance Height ft 65 65
Max Distance Length ft 100 100
Note:The connection pipe applies metric diameter.

4Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling
Cooling
-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
Heating
Heating
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
18K
Conditions
Indoor:DB80°F/WB66.9°F
Outdoor:DB95°F
Indoor air flow:Super High
Pipe length:24.6ft
Conditions
Indoor:DB70°F/WB60°F
Outdoor:DB19.94°F/WB19.04°F
Indoor air flow:Super High
Pipe length:24.6ft

5
Technical Information
Service Manual
2.5 Cooling and Heating Data Sheet in Rated Frequency
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:
2.4 Noise Curve
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/- Y8371
Y8372 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
Heating:
20
30
40
50
LM HSH
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
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 Y8383
Y8384 507~550 in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8 Super High High 75

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
WD
H
42773/16
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
Unit:inch
W H D
38 3/16 11 13/16 8 13/16

7
Technical Information
Service Manual
3.2 Outdoor Unit
Unit: inch
35
13 3/8
27 9/16
15 5/8
38
14 5/16
22
38X27 9/16X15 5/8