LG ARUN780LTS4 Manuals

Manuals and User Guides for LG ARUN780LTS4. We have 3 LG ARUN780LTS4 manuals available for free PDF download: Service Manual, Installation Manual

LG ARUN780LTS4 Service Manual

LG ARUN780LTS4 Service Manual (138 pages)

Brand: LG | Category: Air Conditioner | Size: 13 MB

Table of Contents

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

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LG ARUN780LTS4 Installation Manual

LG ARUN780LTS4 Installation Manual (92 pages)

Brand: LG | Category: Air Conditioner | Size: 25 MB

Table of Contents

Important Safety Instructions
3
Table of Contents
7
Installation Process
8
Outdoor Units Information
9
Environment- Friendly Alternative Refrigerant R410A
16
Select the Best Location
17
Installation Space
18
Individual Installation
18
Lifting Method
20
Installation
21
The Location of the Anchor Bolts
21
Foundation for Installation
22
Preparation of Piping
23
Plumbing Materials and Storage Methods
26
Refrigerant Piping Installation
28
Precautions on Pipe Connection / Valve Operation
28
Pipe Connections between Indoor and Outdoor Unit
29
Preparation Work
29
Pipe Drawing out During Single / Series Connection
30
Refrigerant Piping System
32
Refrigerant Charging
45
Distribution Method
46
Branch Pipe Fitting
47
Leak Test and Vacuum Drying
51
Vacuum Mode
53
Thermal Insulation of Refrigerant Piping
54
Electrical Wiring
55
Caution
55
Control Box and Connecting Position of Wiring
57
Communication and Power Cables
58
Wiring of Main Power Supply and Equipment Capacity
59
Field Wiring
60
Checking the Setting of Outdoor Units
66
Automatic Addressing
67
Group Number Setting
70
Cool & Heat Selector
71
Static Pressure Compensation Mode
72
Night Low Noise Function
73
Overall Defrost Mode
74
Setting the ODU Address
75
Snow Removal & Rapid Defrost
76
Target Pressure Adjusting
77
Self-Diagnosis Function
78
Caution for Refrigerant Leak
89
Introduction
89
Checking Procedure of Limiting Concentration
89
Installation Guide at the Seaside
91

LG ARUN780LTS4 Installation Manual

LG ARUN780LTS4 Installation Manual (33 pages)

Brand: LG | Category: Air Conditioner | Size: 24 MB

Table of Contents

Air Conditioner
1
Installation Manual
1
Tips for Saving Energy

2
Important Safety Instructions

2
- Table of Contents
  3
Installation Process

4
Outdoor Units Information

4
Alternative Refrigerant R410A

6
Select the Best Location

6
Installation Space

7
- Individual Installation
  7
Lifting Method

7
Installation

8
Refrigerant Piping Installation

10
- Precautions on Pipe Connection / Valve Operation
  10
Pipe Connections between Indoor and Outdoor Unit

11
Electrical Wiring

19
Caution for Refrigerant Leak

30
- Introduction
  30
- Checking Procedure of Limiting Concentration
  30
Installation Guide at the Seaside

31
- Model Designation
  32
- Product Information
  32

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