LG UVNH24GJLA2 - Table of Contents

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Air Conditioner Service Manual

TABLE OF CONTENTS

Part 1 General Information ..........................................................................................................2

1. Safety Precautions........................................................................................................3

2. Model Line Up..............................................................................................................12

3. Nomenclature ..............................................................................................................18

Part 2 Functions & Controls......................................................................................................21

1. List of Functions & Controls......................................................................................22

2. Air Flow .......................................................................................................................46

3. Air Purifying.................................................................................................................48

4. Installation Functions.................................................................................................49

5. Reliability .....................................................................................................................54

6. Convenience Functions & Controls .........................................................................55

7. Special Function & KIT...............................................................................................62

Part 3 Basic Control ..................................................................................................................65

1. Normal operation ........................................................................................................66

2 Compressor control ....................................................................................................66

3. EEV( Electronic Expansion Valve) control ...............................................................66

4. Oil return control ........................................................................................................67

5. Defrost control ...........................................................................................................67

Part 4 Test Run..........................................................................................................................68

1. Check before Test Run .............................................................................................69

2. Test Run Flow chart ..................................................................................................70

3. Test Runing.................................................................................................................71

Part 5 Trouble Shooting Guide ...............................................................................................74

1. Self-diagnosis Function .....................................................................................75

2. Pump Down .........................................................................................................77

3. Evacuation...........................................................................................................79

4. Gas Charging ......................................................................................................80

5. Cycle Part ............................................................................................................81

6. Electronic Parts...................................................................................................82

Part 6 Service Order.................................................................................................................174

1. PCB Service Order...................................................................................................175

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