Lg LSU120HE User Manual Page 47
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Service Manual 47
Troubleshooting Guide
Balance Refrigerant of the 3-way Valve
(Gas leakage)
• Procedure
(1) Confirm that both the 2-way and 3-way
valves are set to the back seat.
(2) Connect the charge set to the 3-way
valve’s port.
– Leave the valve on the charge set closed.
– Connect the charge hose to the service
port.
(3) Open the valve (Lo side) on the charge set
and discharge the refrigerant until the
gauge indicates 0 kg/cm
2
G.
– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not
running is higher than 1 kg/cm
2
G), dis-
charge the refrigerant until the gauge indi-
cates 0.5 to 1 kg/cm
2
G. if this is the case, it
will not be necessary to apply a evacuatin.
– Discharge the refrigerant gradually; if it is
discharged too suddenly, the refrigeration
oil will also be discharged.
Lo
Open
Open
3-Way
valve
3-Way
valve
Gas side
CLOSEOPEN
Outdoor unit
Liquid side
Indoor unit
- Room Air Conditioner 1
- TABLE OF CONTENTS 2
- Safety Precautions 3
- ■ Operation 4
- ■ Installation 6
- ■ Disuse 8
- Dimensions 9
- Installation plate 10
- Outdoor Unit 11
- 2. 18k, 24k 12
- Introduction 13
- Installation 14
- Installation Map 15
- Confirm The Refrigerant 16
- Select The Best Location 17
- Piping Length And Elevation 18
- Drill a Hole In The Wall 19
- Flaring Work 20
- Connecting The Piping 21
- Ø6.35 1/4 1.8 22
- Ø9.52 3/8 4.2 22
- Ø12.7 1/2 5.5 22
- Ø15.88 5/8 6.6 22
- Outside diameter Torque 23
- 24 Room Air Conditioner 24
- Correct case 25
- Incorrect case 25
- Connection Of The Drain Hose 26
- Connection Of Piping -Outdoor 26
- Outside diameter 26
- Connection Of The Cable 27
- 28 Room Air Conditioner 28
- Checking The Drainage 29
- Forming The Piping 30
- Air Purging 31
- Air purging With Vacuum Pump 31
- Evacuation 32
- Finishing the job 32
- Charging 33
- Test Running 34
- Function of Controls 35
- 36 Room Air Conditioner 36
- Operation 36
- ■ Heating Mode Operation 36
- ■ Defrost Control 36
- Self-diagnosis Function 39
- Display Function 39
- Remote Control Operations 40
- Indoor Unit 41
- 42 Room Air Conditioner 42
- Disassembly 42
- Service Manual 43 43
- INDOOR UNIT OUTDOOR UNIT 44
- 2-way, 3-way Valve 45
- Pumping Down 46
- Service Manual 47 47
- Troubleshooting Guide 47
- • Procedure 47
- Gas Charging 49
- P = 3 + 0.0123 x Tout 50
- + 0.8 x Tin 50
- Cycle Parts 51
- Electronic Parts (9k model) 52
- Electronic Parts (18k model) 53
- 54 Room Air Conditioner 54
- Service Manual 55 55
- 56 Room Air Conditioner 56
- Service Manual 57 57
- 60 , 61 58
- 62 and 63 58
- 12 , 13 , 14 , 15 of IC01M 58
- Service Manual 59 59
- On for 0.5 second 60
- Off for 3 seconds 60
- Service Manual 61 61
- OUTDOOR UNIT 61
- Electric Control Device 62
- ■ Outdoor (9k, 12k) 63
- ■ Outdoor (18k, 24k) 64
- Wiring Diagram 65
- ■ Outdoor Unit 66
- Service Manual 67 67
- Models: 18k(C/O) 67
- Schematic Diagram 67
- Components Location 68
- ■ Outdoor(9k, 12k) 69
- • TOP VIEW 69
- • BOTTOM VIEW 69
- ■ Outdoor(18k, 24k) 70
- DISPLAY ASSEMBLY 71
- Product Specifications 72
- Cooling & Heating 73
- Exploded View 74
- Service Manual 75 75
- 76 Room Air Conditioner 76
- Service Manual 77 77
- Replacement Parts List 78
- Service Manual 79 79
- Parts List (Indoor) 79
- Parts List (Outdoor) 80
- 80 Room Air Conditioner 80
- Service Manual 81 81
- 82 Room Air Conditioner 82
- P/No.: 3828A20462V 83
- Printed in Korea 83
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