Lennox LI036CI-180P432 User manual

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Service Manual
Model: LI036CI-180P432 LI036CO-180P432
(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 ........................................................................................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 .....................................................................................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
8.9 Wired Controller .............................................................................................................36
Table of Contents

Service Manual
9. Troubleshooting ..................................................................................................46
9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ......................................46
9.2 How to Check Simply the Main Part...............................................................................55
9.3 Troubleshooting for Normal Malfunction.........................................................................71
10. Exploded View and Parts List ..............................................................73
10.1 Indoor Unit....................................................................................................................73
10.2 Outdoor Unit .................................................................................................................75
11. Removal Procedure.......................................................................................77
11.1 Removal Procedure of Indoor Unit ...............................................................................77
11.2 Removal Procedure of Outdoor Unit ............................................................................86
Appendix:........................................................................................................................92
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................92
Appendix 2: Conguration of Connection Pipe.....................................................................92
Appendix 3: Pipe Expanding Method ...................................................................................93
Appendix 4: List of Resistance for Temperature Sensor ......................................................94
Table of Contents

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
LI036CI-180P432
LI036CO-180P432
Outdoor Unit
LI036CO-180P432
Remote Controller
YAA1FB

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model LI036CI-180P432
LI036CO-180P432
Product Code Y6669 / Y6670
Power Supply
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) Btu/h 33600(7404~35997)
Heating Capacity(Min~Max) Btu/h /
Cooling Power Input(Min~Max) W 4100
Heating Power Input(Min~Max) W/
Cooling Power Current A 17
Heating Power Current A/
Rated Input W 4300
Rated Current A 20
Air Flow Volume(SH/H/M/L) m3/h 1250/1100/900/700
Dehumidifying Volume L/h 3.5
EER (Btu/h)/W 8.20
COP (Btu/h)/W /
SEER 18.00
SCOP /
Application Area m246-70
Indoor Unit
Model of indoor unit LI036CI-180P432
Indoor Unit Product Code Y6669
Fan Type Cross-ow
Diameter Length(DXL) mm Φ108X522.7
Fan Motor Cooling Speed (SH/H/M/L) r/min 1400/1250/1000/800
Fan Motor Heating Speed (SH/H/M/L) r/min /
Output of Fan Motor W 70
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ7
Row-n Gap mm 2-1.4
Coil Length (LXDXW) mm 1074X25.4X381
Swing Motor Model MP24BA
Output of Swing Motor W 1.5
Fuse A 3.15
Sound Pressure Level (SH/H/M/L) dB (A) 54/49/44/37
Sound Power Level (SH/H/M/L) dB (A) 64/59/54/47
Dimension (WXHXD) mm 1350X326X253
Dimension of Carton Box (LXWXH) mm 1438X418X352
Dimension of Package (LXWXH) mm 1441X421X367
Net Weight kg 19
Gross Weight kg 23.5

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 LI036CO-180P432
Outdoor Unit Product Code Y6670
Compressor Manufacturer/Trademark MITSUBISHI ELECTRIC (GUANGZHOU)COMPRESSOR CO.
LTD
Compressor Model TNB306FPGMC
Compressor Oil FV50S
Compressor Type Rotary
Compressor Locked Rotor Amp (L.R.A) 67.00
Compressor RLA A 17.5
Compressor Power Input W 3010
Overload Protector CS01F272H01
Throttling Method Electron expansion valve
Operation temp oC 16~30
Ambient temp (cooling) oC -18~43
Ambient temp (heating) oC/
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm Φ9.52
Rows-n Gap mm 2-1.4
Coil Length (LXDXW) mm 940.5X44X762
Fan Motor Speed rpm 890
Output of Fan Motor W 170
Fan Motor RLA A 0.73
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 4400
Fan Type Axial-ow
Fan Diameter mm Φ21 21/32
Defrosting Method /
Climate Type T1
Isolation I
Moisture Protection IP24
Design Pressure(High) PSIG 550
Design Pressure(Low) PSIG 240
Sound Pressure Level (H/M/L) dB (A) 65/-/-
Sound Power Level (H/M/L) dB (A) 75/-/-
Dimension (WXHXD) mm 980X790X427
Dimension of Carton Box (LXWXH) mm 1080X485X840
Dimension of Package (LXWXH) mm 1083X488X855
Net Weight kg 70
Gross Weight kg 75
Refrigerant R410A
Refrigerant Charge kg 2.4
Connection
Pipe
Length m 7.5
Gas Additional Charge g/m 15
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.

4Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
90 95 100 105 110
100
105
95
90
85
80
75
70
65
60
55
50
Outdoor temp. (˚F
)O
utdoor temp. (˚F)
Capacity ratio (%)
Capacity ratio (%)
Conditions
Indoor:
Pipe length :
24 39/64ft
DB 80°F
WB66
°F
Indoor air flow: Super High
-4 514
110
100
90
80
70
60
50
40
23 32 41 50
Conditions
Indoor:DB
70°F
Indoor air flow:Super High
Pipe length:
24 39/64ft
Cooling Heating
24K
0
2
4
6
8
10
12
14
020406080100 120
0
2
4
6
8
10
12
14
020406080 100
120
Condition
Indoor:DB 80°F
WB66
°F
Indoor air flow: Super High
Pipe length:24 39/64ft
Condition
Indoor:DB 70°F
Indoor air flow: Super High
Pipe length:24 39/64ft
Compressor Frequency(Hz) Compressor Frequency(Hz)
Current(A)
Current(A)

5
Technical Information
Service Manual
2.5 Cooling and Heating Data Sheet in Rated Frequency
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 95/- All model 130~145 46.8 to 52.8 127 to 96.8 Super High High 60
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/- 20/19 All model 507~550 134.4 to 102 36 to 39 Super High High 58
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: 7.5m
Cooling:
Heating:
2.4 Noise Curve
30
40
50
60
LMHSH
Indoor fan motor rating speed
Noise/dB(A)
45
50
55
60
65
70
75
80
20 30 40 50 60 70 80 90 100
Compressor frequency(Hz)
Noise dB(A)
Indoor side noise Outdoor side noise

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
53 9/64
12 53/64
10
11 19/32
3 1/2
1 37/64
13 25/32 1029 3/8
Φ2 3/4
Φ2 3/4
Unit:mm

7
Technical Information
Service Manual
Unit:mm
3.2 Outdoor Unit
14 37/64
16 13/16
39 1/2
36 2/9
15 9/16
24