Lennox LNINVE052 User manual

Service Manual
Model: LNINVE052/LNINVC052
LNINVE063/LNINVC063
LNINVE070/LNINVC070
LNINVE080/LNINVC080
(Refrigerant R410A)

Service Manual
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 .......................................................................................... 8
2.3 Capacity Variation Ratio According to Temperature ........................................................... 8
2.4 Cooling and Heating Data Sheet in Rated Frequency ....................................................... 9
2.5 Noise Curve ...................................................................................................................... 10
3. Outline Dimension Diagram .........................................................................11
3.1 Indoor Unit .........................................................................................................................11
3.2 Outdoor Unit ..................................................................................................................... 12
4. Refrigerant System Diagram ...................................................................... 13
5. Electrical Part........................................................................................................... 14
5.1 Wiring Diagram ................................................................................................................. 14
5.2 PCB Printed Diagram ....................................................................................................... 17
6. Function and Control ........................................................................................ 20
6.1 Remote Controller Introduction ....................................................................................... 20
6.2 Brief Description of Modes and Functions ........................................................................ 24
Part Ⅱ: Installation and Maintenance ................................................... 41
7. Notes for Installation and Maintenance ............................................ 41
8. Installation .................................................................................................................. 43
8.1 Installation Dimension Diagram ........................................................................................ 43
8.2 Installation Parts-checking .............................................................................................. 45
8.3 Selection of Installation Location ...................................................................................... 45
8.4 Requirements Forelectric Connection .............................................................................. 45
8.5 Installation of Indoor Unit .................................................................................................. 45
8.6 Installation of Outdoor Unit ............................................................................................... 48
8.7 Vacuum Pumping and Leak Detection ............................................................................. 49
8.8 Check after Installation and Test Operation ..................................................................... 49

Service Manual
9. Maintenance .................................................................................................................50
9.1 Precautions before Maintenance .........................................................................................50
9.2 Error Code List ....................................................................................................................51
9.3 Troubleshooting for Main Malfunction .................................................................................62
9.4 Troubleshooting for Normal Malfunction ..............................................................................75
10. Exploded View and Parts’ List ..................................................................77
10.1 Indoor Unit .........................................................................................................................77
10.2 Outdoor Unit ......................................................................................................................83
11. Removal Procedure ............................................................................................ 87
11.1 Removal Procedure of Indoor Unit ....................................................................................87
11.2 Removal Procedure of Outdoor Unit .................................................................................97
Appendix: ...........................................................................................................................109
Appendix 1: Reference Sheet of Celsius and Fahrenheit .......................................................109
Appendix 2: Conguration of Connection Pipe ........................................................................109
Appendix 3: Pipe Expanding Method ...................................................................................... 110
Appendix 4: List of Resistance for Ambient Temperature Sensor ............................................111

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit:
Outdoor Unit:
LNINVE052
LNINVE063
LNINVE070
LNINVE080
LNINVC052
LNINVC063
LNINVC070
LNINVC080
YB1FA(XFAN)
Remote Controller:

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model LNINVE052/LNINVC052 LNINVE063/LNINVC063
Product Code CB162007700_K96357 CB162007800_K96357
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity W 5200 6300
Heating Capacity W 5850 6300
Cooling Power Input W 1590 1930
Heating Power Input W 1790 1930
Cooling Power Current A 7.05 8.56
Heating Power Current A 7.94 8.56
Rated Input W 2650 2700
Rated Current A 11.76 11.98
Air Flow Volume(SH/H/M/L/SL) m3/h 850/780/650/550/- 950/800/700/550/-
Dehumidifying Volume L/h 1.8 2.5
EER W/W 3.27 3.26
COP W/W 3.27 3.26
SEER W/W / /
HSPF W/W / /
Application Area m223-34 32-50
Indoor
Unit
Model of indoor unit LNINVE052 LNINVE063
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Φ98X710 Φ98X765
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1260/1050/920/730/- 1260/1100/950/750/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1320/1200/1100/1000/- 1320/1200/1100/950/-
Output of Fan Motor W 20 35
Fan Motor RLA A 0.29 0.31
Fan Motor Capacitor μF 1.5 2.5
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Row-n Gap mm 2-1.4 2-1.5
Coil Length (LXDXW) mm 715X25.4X304.8 765X25.4X342.9
Swing Motor Model MP28VB MP35XX
Output of Swing Motor W 2 2.5
Fuse A 3.15 3.15
Sound Pressure Level (H) dB (A) 44 45
Sound Power Level (H) dB (A) 54 55
Dimension (WXHXD) mm 940X298X200 1007X315X219
Dimension of Carton Box (LXWXH) mm 1010X285X380 1073X395X313
Dimension of Package (LXWXH) mm 1013X288X395 1076X398X328
Net Weight kg 13 16
Gross Weight kg 17 21

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 LNINVC052 LNINVC063
Compressor Manufacturer/Trademark
MISUBISHI ELECTRIC/MITSUBISHI
ELECTRIC(GUANGZHOU)
COMPRESSOR CO., LTD
MISUBISHI ELECTRIC/MITSUBISHI
ELECTRIC(GUANGZHOU)
COMPRESSOR CO., LTD
Compressor Model SNB130FGYMC SNB130FGYMC-L1
Compressor Oil FV50S FV50S
Compressor Type Rotary Rotary
L.R.A. A 27 27
Compressor RLA A 8.4 8.4
Compressor Power Input W 1245±5% 1245±5%
Overload Protector INTILL-6578 1NT11L-6578
Throttling Method Capillary Capillary
Operation temp OC 16~30 16~30
Ambient temp (Cooling) OC 18~43 18~43
Ambient temp (Heating) OC -7~24 -7~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ9.52 Φ9.52
Rows-n Gap mm 1-1.4 2-1.4
Coil Length (LXWXD) mm 853X22X660 847X44X660
Fan Motor Speed rpm 700 780
Output of Fan Motor W 60 60
Fan Motor RLA A 0.28 0.28
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit m3/h 3200 3200
Fan Type Axial-ow Axial-ow
Fan Diameter mm Φ520 Φ520
Defrosting Method Automatic Defrosting Automatic Defrosting
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) dB (A) 54 56
Sound Power Level (H) dB (A) 64 66
Dimension (WXHXD) mm 955X700X396 955X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735 1026X455X735
Dimension of Package (LXWXH) mm 1029X458X750 1029X458X750
Net Weight kg 44 50
Gross Weight kg 49 55
Refrigerant R410A R410A
Refrigerant Charge kg 1.2 1.9
Connection
Pipe
Length m 7.5 7.5
Gas Additional Charge g/m 20 50
Outer Diameter Liquid Pipe mm Φ6 Φ6
Outer Diameter Gas Pipe mm Φ12 Φ16
Max Distance Height m 10 10
Max Distance Length m 25 25
Note: The connection pipe applies metric diameter.

4Technical Information
Service Manual
Model LNINVE070/LNINVC070
Product Code CB162003700_K96357
Power Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 7200
Heating Capacity W 8000
Cooling Power Input W 2250
Heating Power Input W 2460
Cooling Power Current A 10.08
Heating Power Current A 10.76
Rated Input W 3600
Rated Current A 16.14
Air Flow Volume(SH/H/M/L/SL) m3/h 1350/1200/1100/900/-
Dehumidifying Volume L/h 2.5
EER W/W 3.20
COP W/W 3.25
SEER W/W /
HSPF W/W /
Application Area m227-42
Indoor Unit
Model of indoor unit LNINVE070
Fan Type Cross-ow
Diameter Length(DXL) mm Φ106X890
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1320/1150/1020/920/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1320/1150/1020/920/-
Output of Fan Motor W 25
Fan Motor RLA A 0.11
Fan Motor Capacitor μF 3
Input of Heater W /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7
Row-n Gap mm 2-1.5
Coil Length (LXDXW) mm 903X25.4X381
Swing Motor Model MP24BA
Output of Swing Motor W 1.5
Fuse A 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 51/47/43/40/-
Sound Power Level (SH/H/M/L/SL) dB (A) 61/57/53/50/-
Dimension (WXHXD) mm 1178X326X253
Dimension of Carton Box (LXWXH) mm 1265X417X343
Dimension of Package (LXWXH) mm 1268X420X358
Net Weight kg 17.5
Gross Weight kg 23.5

5
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LNINVC070
Compressor Manufacturer/Trademark MITSUBISHI ELECTRIC(GUANGZHOU) COMPRESSOR
CO.,LTD/MITSUBISHI ELECTRIC
Compressor Model TNB220FLHMC
Compressor Oil PV50S
Compressor Type Rotary
L.R.A. A 45.00
Compressor RLA A 9.70
Compressor Power Input W 2200
Overload Protector CS-7C-1595
Throttling Method Capillary
Operation temp OC 16~30
Ambient temp (Cooling) OC 18~43
Ambient temp (Heating) OC -7~24
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7
Rows-n Gap mm 2-1.4
Coil Length (LXWXD) mm 953X38.1X748
Fan Motor Speed rpm 780/500
Output of Fan Motor W 90
Fan Motor RLA A 0.79
Fan Motor Capacitor μF 7
Air Flow Volume of Outdoor Unit m3/h 4000
Fan Type Axial-ow
Fan Diameter mm Φ552
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IP24
Permissible Excessive Operating
Pressure for the Discharge Side MPa 3.8
Permissible Excessive Operating
Pressure for the Suction Side MPa 1.2
Sound Pressure Level (H) dB (A) 59
Sound Power Level (H) dB (A) 69
Dimension (WXHXD) mm 980X790X427
Dimension of Carton Box (LXWXH) mm 1080X485X840
Dimension of Package (LXWXH) mm 1083X488X855
Net Weight kg 65
Gross Weight kg 73
Refrigerant R410A
Refrigerant Charge kg 1.80
Connection
Pipe
Length m 7.5
Gas Additional Charge g/m 30
Outer Diameter Liquid Pipe mm Φ6
Outer Diameter Gas Pipe mm Φ16
Max Distance Height m 10
Max Distance Length m 30
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
Model LNINVE080/LNINVC080
Product Code CB162007600_K96357
Power Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 8000
Heating Capacity W 8400
Cooling Power Input W 2460
Heating Power Input W 2550
Cooling Power Current A 10.91
Heating Power Current A 11.31
Rated Input W 3600
Rated Current A 15.97
Air Flow Volume(SH/H/M/L/SL) m3/h 1200/1100/1000/900/-
Dehumidifying Volume L/h 2.7
EER W/W 3.25
COP W/W 3.29
SEER W/W /
HSPF W/W /
Application Area m235-52
Indoor Unit
Model of indoor unit LNINVE080
Fan Type Cross-ow
Diameter Length(DXL) mm Φ106X890
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1410/1350/1260/1200/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1410/1350/1260/1200/-
Output of Fan Motor W 30
Fan Motor RLA A 0.3
Fan Motor Capacitor μF 3
Input of Heater W /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7
Row-n Gap mm 2-1.5
Coil Length (LXDXW) mm 903X25.4X381
Swing Motor Model MP24BA
Output of Swing Motor W 1.5
Fuse A 3.15
Sound Pressure Level (H) dB (A) 48
Sound Power Level (H) dB (A) 58
Dimension (WXHXD) mm 1178X326X253
Dimension of Carton Box (LXWXH) mm 1265X417X343
Dimension of Package (LXWXH) mm 1268X420X358
Net Weight kg 17.5
Gross Weight kg 23.5

7
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit LNINVC080
Compressor Manufacturer/Trademark MISUBISHI ELECTRIC/MITSUBISHI ELECTRIC(GUANGZHOU)
COMPRESSOR CO., LTD
Compressor Model TNB220FLHMC
Compressor Oil PV50S
Compressor Type Rotary
L.R.A. A 45
Compressor RLA A 9.7
Compressor Power Input W 2200±5%
Overload Protector CS-7C-1595
Throttling Method Capillary
Operation temp OC 16~30
Ambient temp (Cooling) OC 18~43
Ambient temp (Heating) OC -7~24
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7.94
Rows-n Gap mm 3-1.5
Coil Length (LXWXD) mm 940.45X44X762
Fan Motor Speed rpm 780
Output of Fan Motor W 90
Fan Motor RLA A 0.79
Fan Motor Capacitor μF 7
Air Flow Volume of Outdoor Unit m3/h 4000
Fan Type Axial-ow
Fan Diameter mm Φ552
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IP24
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5
Sound Pressure Level (H) dB (A) 59
Sound Power Level (H) dB (A) 69
Dimension (WXHXD) mm 980X790X427
Dimension of Carton Box (LXWXH) mm 1080X485X840
Dimension of Package (LXWXH) mm 1083X488X855
Net Weight kg 70
Gross Weight kg 78
Refrigerant R410A
Refrigerant Charge kg 2.4
Connection
Pipe
Length m 7.5
Gas Additional Charge g/m 50
Outer Diameter Liquid Pipe mm Φ6
Outer Diameter Gas Pipe mm Φ16
Max Distance Height m 10
Max Distance Length m 30
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

8Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
11
10
9
8
7
6
5
4
3
2
1
0
220V
230V
240V
220V
230V
240V
Current (A)
Current (A)
Conditions
Indoor:DB27°C/WB19°C
Outdoor:DB35°C
Indoor air flow:Super High
Pipe length:7.5m
Conditions
Indoor:DB20°C
Outdoor:DB7°C/WB6°C
Indoor air flow:Super High
Pipe length:7.5m
Compressor speed (rps) Compressor speed (rps)
Cooling Heating
32 33 34 35 36 37 38 39 43 –15 –10 –5
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
110
100
90
80
70
60
50
40
0 5 8 10
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length:7.5m
Conditions
Indoor:DB20°C
Indoor air flow:Super High
Pipe length:7.5m
Outdoor temp.(°C) Outdoor temp.(°C)
Capacity ratio (%)
Capacity ratio (%)

9
Technical Information
Service Manual
2.4 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: 7.5 m.
Cooling:
Heating:
Rated cooling
condition(℃) (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 (MPa) T1 (℃) T2 (℃)
27/19 35/24 LNINVE052/LNINVC052 0.9~1.1 in:8~9
out:10~12
in:75~85
out:37~43 Super High High 68
27/19 35/24 LNINVE063/LNINVC063 0.9~1.1 in:7~9
out:10~12
in:75~85
out:37~43 Super High High 73
27/19 35/24 LNINVE070/LNINVC070 0.9~1.1 in:8~9
out:10~12
in:75~85
out:37~43 Super High High 52
27/19 35/24 LNINVE080/LNINVC080 0.9~1.1 in:7~9
out:10~12
in:75~85
out:37~43 Super High High 58
Rated cooling
condition(℃) (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 (MPa) T1 (°C) T2 (°C)
20/15 7/6 LNINVE052/LNINVC052 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 72
20/15 7/6 LNINVE063/LNINVC063 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 77
20/15 7/6 LNINVE070/LNINVC070 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 56
20/15 7/6 LNINVE080/LNINVC080 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 89

10 Technical Information
Service Manual
2.5 Noise Curve
Indoor side noise Outdoor side noise
55
45
35
Indoor fan motor rotating speed Compressor frequency/Hz
Low Middle High Super High
LNINV5210
LNINV8010
LNINV6310 LNINV7010
60
50
40
30
20
0 20 40 60 10080
Noise/dB(A)
Noise/dB(A)
LNINV5210
LNINV8010
LNINV6310 LNINV7010
LNINVE052
LNINVE063 LNINVE070
LNINVE080
LNINVC052
LNINVC063 LNINVC070
LNINVC080

11
Technical Information
Service Manual
193
53 694
98
31
Φ55X2
205
117 685
67
90
Φ70X2
75 45
130 100
50
178 747 253
Φ70X2
Unit:mm
3. Outline Dimension Diagram
3.1 Indoor Unit
W
D
H
Models W H D
LNINVE052 940 298 200
LNINVE063 1007 315 219
LNINVE070 1178 326 253
LNINVE080 1178 326 253
LNINVE052
LNINVE063
LNINVE070
LNINVE080

12 Installation and Maintenance
Service Manual
890
955
340
700
368
560
396
427
980
920
610
370
097
593
3.2 Outdoor Unit
Unit:mm
Unit:mm
LNINVC052 LNINVC063
LNINVC070 LNINVC080

13
Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:1/2" (12mm)(LNINV5210)
Gas pipe:5/8" (16mm)(LNINV6310,LNINV7010,LNINV8010)
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer Strainer
Capillary

14 Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
●Instruction
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.
Models:LNINVE052 LNINVE063
3
2

15
Technical Information
Service Manual
Models:LNINVE070 LNINVE080
● Outdoor Unit
Model:LNINVC052
RT2
15
2
3
RT1
POWER
WARNING
the voltage of terminal P(DC+) and
prevent the risk of electrical shock!
N(DC-) at AP1 is higher than 30V to
Please don't touch any terminal when

16 Technical Information
Service Manual
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
Model:LNINVC063
Models:LNINVC070 LNINVC080
Please don't touch any terminal when
N(DC-) at AP1 is higher than 30V to
prevent the risk of electrical shock!
the voltage of terminal P(DC+) and
WARNING
POWER
C3:CBB61
C1,C2:CBB65
OG:ORANGE
voltage of terminal P(DC+) and N(DC-) at
of electrical shock!
AP1 is higher than 30V to prevent the risk
Please don't touch any terminal when the
WARNING
BN:BROWN
BU:BLUE
BK:BLACK RD:RED
YE:YELLOW
WH:WHITE
YEGN:YELLOW GREEN

17
Technical Information
Service Manual
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
5.2 PCB Printed Diagram
● Top view
● Bottom view
Models:LNINVE052 LNINVE063
Indoor Unit
1 Copper pin terminal of neutral wire
2 Auxiliary heating relay K1, K2
3 Fan capacitor
4 Protective tube
5 Health relay K3
6 PG motor terminal
7 Piezoresistor
8 Jumper cap
9 Up&down swing terminal
10 PG feedback terminal
11 Terminal of ambient temperature
sensor
12 Terminal of tube temperature
sensor
13 Connect display board DISP1,
DISP2 terminals
14 High-frequency transformer T1
15 Rectier DB1
16 Strainer SF2022A-05220
17 Connect copper terminal of
communication line for indoor fan
18 Supply power for control relay K4
of outdoor fan
1
2 3 4 5 6 7 8 9 10
11
12
14
15
16
17
18