Lennox LM009CI-100T432-1 User manual

Thank you for selecting LENNOX air conditioners.
Service Manual
Models: LM009CI-100T432-1 / LM009CO-100T432-1
LM012CI-100T432-1 / LM012CO-100T432-1
LM018CI-100T432-1 / LM018CO-100T432-1
LM024CI-100T432-1 / LM024CO-100T432-1
(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 Capacity Curve in Different Outdoor Temperature ...........................................................6
2.3 Cooling and Heating Data Sheet in Rated Frequency .....................................................6
3. Outline Dimension Diagram........................................................................7
3.1 Indoor Unit........................................................................................................................7
3.2 Outdoor Unit .....................................................................................................................8
4. Refrigerant System Diagram....................................................................10
5. Electrical Part.........................................................................................................11
5.1 Wiring Diagram...............................................................................................................11
5.2 PCB Printed Diagram .....................................................................................................15
6. Function and Control......................................................................................16
6.1 Remote Controller Introduction .....................................................................................16
6.2 Brief Description of Modes and Functions......................................................................20
Part Ⅱ: Installation and Maintenance .................................................24
7. Notes for Installation and Maintenance..........................................24
8. Installation................................................................................................................26
8.1 Installation Dimension Diagram......................................................................................26
8.2 Installation Parts-checking ............................................................................................28
8.3 Selection of Installation Location....................................................................................28
8.4 Electric Connection Requirement...................................................................................28
8.5 Installation of Indoor Unit................................................................................................28
8.6 Installation of Outdoor Unit.............................................................................................31
8.7 Vacuum Pumping and Leak Detection ...........................................................................32
8.8 Check after Installation and Test Operation ...................................................................32
9. Maintenance............................................................................................................33
9.1 Error Code......................................................................................................................33
9.2 Procedure of Troubleshooting ........................................................................................35
9.3 Maintenance Method for Normal Malfunction.................................................................42

Service Manual
Table of Contents Table of Contents
10. Exploded View and Parts List ..............................................................44
10.1 Indoor Unit....................................................................................................................44
10.2 Outdoor Unit .................................................................................................................50
11. Removal Procedure.......................................................................................58
11.1 Removal Procedure of Indoor Unit ...............................................................................58
11.2 Removal Procedure of Outdoor Unit ............................................................................68
Appendix:........................................................................................................................86
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................86
Appendix 2: Conguration of Connection Pipe.....................................................................86
Appendix 3: Pipe Expanding Method ...................................................................................87
Appendix 4: List of Resistance for Temperature Sensor ......................................................88

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
LM009CI-100T432-1
LM012CI-100T432-1
LM018CI-100T432-1
LM024CI-100T432-1
LM009CO-100T432-1 LM012CO-100T432-1
LM018CO-100T432-1 LM024CO-100T432-1
Part Ⅰ: Technical Information
Outdoor Unit:
Remote Controller:
YV1FB7

2Technical Information
Service Manual
Model LM009CI-100T432-1
LM009CO-100T432-1
LM012CI-100T432-1
LM012CO-100T432-1
Product Code Y6760 Y6761 Y6762 Y6763
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Indoor Indoor
Cooling Capacity Btu/h 9000 12000
Heating Capacity Btu/h / /
Cooling Power Input W 819 1134
Heating Power Input W / /
Cooling Power Current A 3.22 5.03
Heating Power Current A / /
Rated Input W 1130 1300
Rated Current A 6.85 7.0
Air Flow Volume(SH/H/M/L/SL) m3/h 550/490/430/370/- 630/540/460/330/-
Dehumidifying Volume L/h 0.8 1.4
EER (Btu/h)/W 10.99 10.58
COP (Btu/h)/W / /
SEER W/W / /
HSPF W/W / /
Application Area m212-18 16-24
Indoor Unit
Model of indoor unit LM009CI-100T432-1 LM012CI-100T432-1
Indoor Unit Product Code Y6760 Y6762
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Ф98X580 Ф98X633.5
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/800/- 1350/1200/1050/850/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min / /
Output of Fan Motor W 20 20
Fan Motor RLA A 0.2 0.32
Fan Motor Capacitor μF 1 1.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф5Ф5
Row-n Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 584X22.8X266.7 635X25.4X304.8
Swing Motor Model MP24AA 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) 39/36/32/26/- 42/38/33/29/-
Sound Power Level (SH/H/M/L/SL) dB (A) 49/46/42/36/- 52/48/43/39/-
Dimension (WXHXD) mm 790X275X200 845X289X209
Dimension of Carton Box (LXWXH) mm 863X268X352 918X278X364
Dimension of Package (LXWXH) mm 866X271X367 921X281X379
Net Weight kg 9 10.5
Gross Weight kg 11 12.5
2. Specications
2.1 Specication Sheet

3
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LM009CO-100T432-1 LM012CO-100T432-1
Outdoor Unit Product Code Y6761 Y6763
Compressor Manufacturer/Trademark ZHUHAI LANDA
COMPRESSOR CO. LTD.
ZHUHAI LANDA COMPRESSOR
CO.,LTD.
Compressor Model QXA-B098E050 QXA-C122E030
Compressor Oil RB68EP,FCV68D RB68EP/FVC68D
Compressor Type Rotary Rotary
L.R.A. A 18.5 25
Compressor RLA A 3.6 4.6
Compressor Power Input W 800 1010
Overload Protector Internal Internal
Throttling Method Capillary Capillary
Operation Temp oC 16~30 16~30
Ambient Temp (Cooling) oC 18~43 18~43
Ambient Temp (Heating) oC / /
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф5Ф7.94
Rows-n Gap mm 1-1.3 1-1.4
Coil Length (LXDXW) mm 739X22.8X495.3 742X19.05X506
Fan Motor Speed rpm 850±20 850
Output of Fan Motor W 35 35
Fan Motor RLA A 0.37 0.33
Fan Motor Capacitor μF 2.5 2.5
Air Flow Volume of Outdoor Unit m3/h 1600 1800
Fan Type Axial-ow Axial-ow
Fan Diameter mm Ф394.5 Ф394.5
Defrosting Method / /
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating Pressure
for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating Pressure
for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 50/-/- 50/-/-
Sound Power Level (H/M/L) dB (A) 60/-/- 60/-/-
Dimension (WXHXD) mm 776X540X328 848X540X320
Dimension of Carton Box (LXWXH) mm 820X355X580 878X360X580
Dimension of Package (LXWXH) mm 823X358X595 881X363X595
Net Weight kg 27.5 32.5
Gross Weight kg 30 35
Refrigerant R410A R410A
Refrigerant Charge kg 0.52 0.85
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 15 15
Outer Diameter Liquid Pipe mm Ф6Ф6
Outer Diameter Gas Pipe mm Ф9.52 Ф12
Max Distance Height m 10 10
Max Distance Length m 15 20
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

4Technical Information
Service Manual
Model LM018CI-100T432-1
LM018CO-100T432-1
LM024CI-100T432-1
LM024CO-100T432-1
Product Code Y6764 Y6765 Y6766 Y6767
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Indoor Indoor
Cooling Capacity Btu/h 18000 24000
Heating Capacity Btu/h / /
Cooling Power Input W 1675 2164
Heating Power Input W / /
Cooling Power Current A 7.28 9.60
Heating Power Current A / /
Rated Input W 1950 2700
Rated Current A 8.48 10.64
Air Flow Volume(SH/H/M/L/SL) m3/h 850/780/680/540/- 1250/1100/960/820/-
Dehumidifying Volume L/h 1.8 2.0
EER (Btu/h)/W 10.70 11.09
COP (Btu/h)/W / /
SEER W/W / /
HSPF W/W / /
Application Area m223-34 27-42
Indoor Unit
Model of indoor unit LM018CI-100T432-1 LM024CI-100T432-1
Indoor Unit Product Code Y6764 Y6766
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Ф106X706 Φ108X830
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/900/- 1300/1150/1000/850/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min / /
Output of Fan Motor W 35 35
Fan Motor RLA A 0.35 0.35
Fan Motor Capacitor μF 2.5 3
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф7Φ7
Row-n Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8 845X25.4X381
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/SL) dB (A) 48/43/40/36/- 48/45/40/37/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/53/50/46/- 58/55/50/47/-
Dimension (WXHXD) mm 970X300X224 1078X325X246
Dimension of Carton Box (LXWXH) mm 1038X380X305 1145X410X335
Dimension of Package (LXWXH) mm 1041X383X320 1148X413X350
Net Weight kg 13.5 16
Gross Weight kg 16.5 19.5

5
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LM018CO-100T432-1 LM024CO-100T432-1
Outdoor Unit Product Code Y6765 Y6767
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD.
ZHUHAI LANDA COMPRESSOR
CO.,LTD.
Compressor Model QXA-F19F050 QXA-F24F050
Compressor Oil ATMOS-RB68EP RB68EP
Compressor Type Rotary Rotary
L.R.A. A 40 45.00
Compressor RLA A 7.25 8.90
Compressor Power Input W 1590 2027
Overload Protector Internal internal
Throttling Method Capillary Capillary
Operation Temp oC 16~30 16~30
Ambient Temp (Cooling) oC 18~43 18~43
Ambient Temp (Heating) oC / /
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Ф9.52 Ф7
Rows-n Gap mm 1-1.4 2-1.4
Coil Length (LXDXW) mm 797X22X660 817.8X38.1X660
Fan Motor Speed rpm 780 690
Output of Fan Motor W 68 60
Fan Motor RLA A 0.75 0.56
Fan Motor Capacitor μF 3 3.5
Air Flow Volume of Outdoor Unit m3/h 2800 3200
Fan Type Axial-ow Axial-ow
Fan Diameter mm Φ460 Ф520
Defrosting Method / /
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating Pressure
for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating Pressure
for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 54/-/- 54/-/-
Sound Power Level (H/M/L) dB (A) 64/-/- 64/-/-
Dimension (WXHXD) mm 931X680X378 963X700X396
Dimension of Carton Box (LXWXH) mm 994X428X725 1026X455X735
Dimension of Package (LXWXH) mm 997X431X740 1029X458X750
Net Weight kg 47 52
Gross Weight kg 51 56.5
Refrigerant R410A R410A
Refrigerant Charge kg 1.15 1.6
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 15 15
Outer Diameter Liquid Pipe mm Ф6Ф6
Outer Diameter Gas Pipe mm Ф12 Ф16
Max Distance Height m 10 10
Max Distance Length m 25 25
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

6Technical Information
Service Manual
2.2 Capacity Curve in Different Outdoor Temperature
Cooling:
2.3 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling condition(°C)
(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
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 LM009CI-100T432-1
LM009CO-100T432-1 0.9~1.1 in:10~14 out:11~14
in:72~83
out:35~40 Super High High
27/19 35/24 LM012CI-100T432-1
LM012CO-100T432-1 0.8~1.1 in:10~14 out:11~14
in:69~74
out:38~45 Super High High
27/19 35/24 LM018CI-100T432-1
LM018CO-100T432-1 0.8~1.0 in:8~11 out:11~14
in:75~85
out:37~43 Super High High
27/19 35/24 LM024CI-100T432-1
LM024CO-100T432-1 0.9~1.1 in:8~11 out:11~12
in:75~85
out:36~43 Super High High
Cooling:
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: 5m.
Outdoor temp.( )
)%(oitaryticapaC
32 33 34 35 36 37 38 39 43
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length:5m
°C

7
Technical Information
Service Manual
WD
H
131 542 172
43
43
80
143
Ф5 5Ф5 5
181685104
Ф55 Ф55
190 181
38
38
90
150
54
168.5 462 159.5
Φ55 Φ55
54
206 685 187
Ф70
Ф70
4343
154 79
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
LM009CI-100T432-1
LM012CI-100T432-1
LM018CI-100T432-1
LM024CI-100T432-1
Model W H D
LM009CI-100T432-1 790 275 200
LM012CI-100T432-1 845 289 209
1LM018CI-100T432-1 970 300 224
1LM024CI-100T432-1 1078 325 246

8Technical Information
Service Manual
3.2 Outdoor Unit
LM012CO-100T432-1
LM009CO-100T432-1
848
257
540
286
320
763
540
Unit:mm
Unit:mm
712
776
510
320
257
286
540

9
Technical Information
Service Manual
LM024CO-100T432-1
Unit:mm
Unit:mm
LM018CO-100T432-1
378
8
931
47
086
549
843
300
963
560
897 340
396
364
700

10 Technical Information
Service Manual
4. Refrigerant System Diagram
Indoor unit Outdoor unit
Indoor unit Outdoor unit
COOLING
HEATING
Accumlator
4-Way valve
COOLING
Discharge
Suction
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Heat
exchanger
(condenser)
Valve
Valve
Valve
Valve
Liquid pipe
side
Gas pipe
side
Liquid pipe
side
Gas pipe
side
Compressor
Accumlator
Compressor
Strainer
Strainer StrainerCapillary
Capillary
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:3/8" (9.52mm)(LM009CI-100T432-1 LM009CO-100T432-1)
Gas pipe:1/2" (12mm)(all models except LM009CI-100T432-1 LM009CO-100T432-1)

11
Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
●Instruction
LM009CI-100T432-1 LM012CI-100T432-1
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.
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12 Technical Information
Service Manual
LM018CI-100T432-1
LM024CO-100T432-1
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13
Technical Information
Service Manual
LM009CO-100T432-1 LM012CO-100T432-1
● Outdoor Unit
LM018CO-100T432-1
MOTOR
M2
FAN
M1
N(1)
INDOOR UNIT
YEGN
BK
BU
BU
BK
63613294
BU
YE BU
C1
BN
C2
RD
S(X)
BK
C(U)
E
R(M,V)
E
YEGN
COMP
E
E
YEGN
MOTOR
E
2
(BK)
(BN)
XT1
C2
BN
COMP.
BK YE
BU
C
SR䠄㻹䠅
FAN MOTOR
YEGN
YEGN
BK
BU
BK
YEGN (BU)
BN
BU
WH
(OG)
(RD)
63613578

14 Technical Information
Service Manual
LM024CO-100T432-1
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
6361000001802

15
Technical Information
Service Manual
5.2 PCB Printed Diagram
● Top view
● Bottom view
1Interface of compressor
2Interface of live wire
3Interface of neutral wire
4Interface of neutral wire for
cold plasma
5Interface of PG motor
6Interface of outdoor fan
7Interface of 4-way valve
8Interface of live wire of cold
plasma
9Interface of up&down swing
10 Feedback interface of PG
motor
11 Interface of left&right swing
12 Jumper
13 Interface of temperature
sensor
14 Interface of display board
1
2
3
4567 8910
11
12
13
14

16 Technical Information
Service Manual
6. Function and Control
6.1 Remote Controller Introduction
Introduction for icons on display screen
1
14
3
1
13
2
2
5
4
6
7
8
11
12
13
9
14
15
ON/OFF button
▲ button
3
FAN button
SWING button
TIMER OFF button
TURBO button
10
TEMP button
I FEEL button
button
CLOCK button
TIMER ON button
SLEEP button
Send signal
Turbo mode
8heating function
Set temperature
Set time
TIMER ON /
TIMER OFF
Child lock
Up & down swing
Set fan speed
ventilation operation
Light
Temp. display type
:Set temp.
:Outdoor ambient temp.
:Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
I feel
6
9
8
12
15
4
7
10
5
11
X-FAN button
/
MODE button
▲
button
X-fan mode
health function
Introduction for buttons on remote controller
Note:
●After putting through the power, the air conditioner will give out a sound. Operation indictor " " is ON (red indicator).
After that, you can operate the air conditioner by using remote controller.
●
Under on status, pressing the button on the remote controller, the signal icon " "
on the display of remote controller
will blink once and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner
.
● Under off status, set temperature and clock icon will be displayed on the display
of remote controller (If timer on, timer
off and light functions are set, the corre-
sponding icons will be displayed on the display of remote controller at the same
time); Under on status, the display will show the corresponding set function icons.
Press this button to turn on the unit. Press this button again to turn off the unit.
Press this button to increase set temperature. Holding it down above 2 seconds rapidly increases set temperature.
In AUTO mode, set temperature is not adjustable.

17
Technical Information
Service Manual
AUTO
COOL DRY FAN HEAT*
OFF