User Manuals: LG MULTI V WATER IV ARWN780LAS4 Heat pump

Manuals and User Guides for LG MULTI V WATER IV ARWN780LAS4 Heat pump. We have 2 LG MULTI V WATER IV ARWN780LAS4 Heat pump manuals available for free PDF download: Service Manual

LG MULTI V WATER IV ARWN780LAS4 Service Manual

LG MULTI V WATER IV ARWN780LAS4 Service Manual (95 pages)

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

Table of Contents

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

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LG MULTI V WATER IV ARWN780LAS4 Service Manual

LG MULTI V WATER IV ARWN780LAS4 Service Manual (31 pages)

Outside Unit

Brand: LG | Category: Heat Pump | Size: 6.3 MB

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