LG ARNU18GB4G2 Manuals

Manuals and User Guides for LG ARNU18GB4G2. We have 5 LG ARNU18GB4G2 manuals available for free PDF download: Owner's Manual, Service Manual, Installation Manual

LG ARNU18GB4G2 Owner's Manual (193 pages)

MULTI V Ceiling Concealed Duct – Low Static Type Indoor Unit

Brand: LG | Category: Air Conditioner | Size: 10.87 MB

LG ARNU18GB4G2 Service Manual (138 pages)

Brand: LG | Category: Air Conditioner | Size: 13.7 MB

Table of Contents

2
- Safety Precautions
  3
Part 1 General Information

8
- 1 Model Names
  
  9
  - Indoor Unit
    9
  - Outdoor Unit
    10
- 2 External Appearance
  
  11
  - Indoor Unit
    11
  - Outdoor Unit
    12
- 3 Combination of Outdoor Units
  
  13
- 4 Nomenclature
  
  14
  - Indoor Unit
    14
  - Outdoor Unit
    14
- Part 2 Outdoor Units
  
  15
Function

17
- 1 Basic Control
  
  18
  - Normal Operation
    18
  - Compressor Control
    18
  - Master and Slave Unit's EEV Control
    19
- 2 Special Control
  
  20
  - Oil Return Control
    20
  - Partial Defrost
    23
  - Oil Equalizing Control
    24
- 3 Protection Control
  
  25
  - Pressure Protection Control
    25
  - Discharge Temperature Control
    26
  - Inverter Protection Control
    26
  - Phase Detection
    27
  - Pressure Switch
    27
- 4 Other Control
  
  28
  - Initial Setup
    28
  - Emergency Operation
    31
  - Refrigerant Auto Charging
    33
  - Refrigerant Amount Automatic Judgment
    35
  - Itr(Cooling)
    36
  - Itr(Heating)
    37
  - FDD Code
    39
  - Multi V ITR Result Report
    40
  - Pump down
    41
  - Pump out
    42
  - Auto Back up Function_Inverter Compressor
    44
  - Night Low Noise Function
    45
  - Vacuum Mode
    46
  - Static Pressure Compensation Mode
    46
  - Cool & Heat Selector
    47
- Part 3 PCB Setting and Test Run
  
  49
- Part 4 Trouble Shooting Guide
  
  54
Trouble Shooting Guide

55
- 1 The Phenomena from Main Component Failure
  
  56
- 2 Checking Method for Key Components
  
  57
  - Compressor
    57
  - Fan Motor
    58
  - Electronic Expansion Valve
    59
  - Phase Bridge Diode Checking Method
    62
  - Inverter IPM Checking Method
    63
  - Fan IPM Checking Method(UX3 Chassis)
    64
  - Fan IPM Checking Method(UX2 Chassis)
    65
  - Pressure Sensor(High/Low Pressure Sensor)
    66
  - Outdoor Fan
    66
  - Solenoid Valve
    67
  - Reverse Valve
    68
  - Temperature Sensor
    68
  - Others
    69
- 3 Self-Diagnosis Function
  
  70

LG ARNU18GB4G2 Service Manual (95 pages)

Brand: LG | Category: Air Conditioner | Size: 11.63 MB

Table of Contents

2
- Safety Precautions
  3
Part 1 General Information

8
- Indoor Unit
  9
- Model Names
  9
- Outside Unit
  10
- External Appearance
  11
- Indoor Unit
  11
- Outside Unit
  12
- Combination of Outside Units
  13
- Indoor Unit
  14
- Nomenclature
  14
- Outside Unit
  14
- Part 2 Outside Units
  15
Function

16
- Basic Control
  17
- Compressor Control
  17
- Normal Operation
  17
- Master and Slave Unit's EEV Control
  18
- Oil Return Control
  19
- Special Control
  19
- Oil Equalizing Control
  21
- Stop Operation
  21
- Pressure Protection Control
  22
- Protection Control
  22
- Discharge Temperature Control
  23
- Inverter Protection Control
  23
- Phase Detection
  24
- Pressure Switch
  24
- Initial Setup
  25
- Other Control
  25
- Cool & Heat Selector
  28
- Geothermal Mode
  29
- 220 V out for Solenoid Valve
  30
- Variable Water Flow Control
  31
- Outside Unit Adress
  32
- Using a Sump Heater
  33
- Vacum Mode
  34
- Forced Oil Return
  35
- Refrigerant Noise Reduction Mode
  36
- Cycle Data View
  37
- Part 3 PCB Setting and Test Run
  38
- Part 4 Trouble Shooting Guide
  43
Trouble Shooting Guide

44
- The Phenomena from Main Component Failure
  45
- Checking Method for Key Components
  46
- Compressor
  46
- Electronic Expansion Valve
  47
- Phase Bridge Diode Checking Method
  50
- Inverter IPM/IGBT Checking Method
  51
- Outdoor Fan
  52
- Pressure Sensor(High/Low Pressure Sensor)
  52
- Solenoid Valve
  53
- Reverse Valve
  54
- Temperature Sensor
  54
- Others
  55
- Self-Diagnosis Function
  56

LG ARNU18GB4G2 Installation Manual (27 pages)

BUILT - IN DUCT - LOW STATIC

Brand: LG | Category: Air Conditioner | Size: 3.96 MB

LG ARNU18GB4G2 Service Manual (20 pages)

Brand: LG | Category: Air Conditioner | Size: 1.18 MB

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LG ARNU18GB4G2 Manuals

LG ARNU18GB4G2 Owner's Manual (193 pages)

Table of Contents

LG ARNU18GB4G2 Service Manual (138 pages)

Table of Contents

Table of Contents

Part 1 General Information

1 Model Names

2 External Appearance

3 Combination of Outdoor Units

4 Nomenclature

Part 2 Outdoor Units

Function

1 Basic Control

2 Special Control

3 Protection Control

4 Other Control

Part 3 PCB Setting and Test Run

Part 4 Trouble Shooting Guide

Trouble Shooting Guide

1 The Phenomena from Main Component Failure

2 Checking Method for Key Components

3 Self-Diagnosis Function

LG ARNU18GB4G2 Service Manual (95 pages)

Table of Contents

Table of Contents

Part 1 General Information

Function

Trouble Shooting Guide

LG ARNU18GB4G2 Installation Manual (27 pages)

Table of Contents

Safety Precautions

Introduction

Installation

How to Set E.S.P

LG ARNU18GB4G2 Service Manual (20 pages)

Table of Contents

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