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Table Of Contents - LG Multi V5 Service Manual

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Data manual (162 pages)

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Manual book (133 pages)

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Engineering manual (105 pages)

Table Of Contents

Table of Contents

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Table of Contents

Table Of Contents3

Safety Precautions4

Table Of Symbols4

Unit Nomenclature8

Outdoor Units (Odu)8

Heat Recovery Units (Hru)8

Wiring Diagrams9

Outdoor Wiring Diagram9

Refrigerant Flow Diagrams17

Heat Pump – Cooling Mode17

Heat Pump – Heating Mode18

Heat Pump – Oil Return And Defrost Operation19

Heat Pump – Lower Hex Defrost Operation20

Heat Pump – Upper Hex Defrost Operation21

Heat Recovery – Cooling Mode27

Heat Recovery – Heating Mode28

Heat Recovery – Cooling-Based Simultaneous Operation29

Heat Recovery – Heating-Based Simultaneous Operation30

Heat Recovery – Balanced Simultaneous Operation31

Heat Recovery – Oil Return And Defrost Operation32

Heat Recovery – Lower Hex Defrost Operation33

Heat Recovery – Upper Hex Defrost Operation34

Basic Control43

Normal Operation43

Compressor Control43

Outdoor Unit Functions43

Master And Slave Outdoor Unit Eev Control44

Main Eev Control44

Subcooling Eev Control44

Avoiding Excessively High Discharge Temperatures44

Oil Return Control45

Oil Return In Cooling Mode45

Oil Return Control In Heating Mode45

Special Control45

Defrost Control46

Partial Defrost46

Defrost Control Stop Operation46

Partial Defrost Control Stop Operation46

Stop Operation Control47

Oil Equalizing Control47

Stop Operation Control In Heating Mode47

Pressure Protection Control48

Pressure Control In Heating Mode48

Inverter Compressor Protection Control49

Discharge Temperature/Inverter Protection49

Initial Setup50

Other Controls50

Auto Addressing Flowchart52

Quick Control Setting53

Troubleshooting A Failed Indoor Unit Auto Addressing Procedure53

Setting The Optional Modes54

Emergency Operation56

Automatic Emergency Operation (Automatic Backup Function)56

Manual Emergency Operation (Manual Backup Function)56

Fault Detection Diagnosis (Fdd) Checklist57

Fault Detection Diagnosis (Fdd) Codes57

Refrigerant Auto Charge (Fd1 [Cooling], Fd2 [Heating])58

Refrigerant Charge Procedure59

Refrigerant Auto Judge (Fd3 [Cooling], Fd4 [Heating])60

Integrated Test Run (Itr) (Fd7)61

Cool/Heat Selector64

Static Pressure Compensation Function (Fn2)65

Night Low Sound Function (Fn3)66

(Overall) Defrost Function (Fn4)67

Outdoor Unit Addressing Function67

Snow Removal Assist/Rapid Defrost Function68

Rapid Defrost68

Adjusting Indoor Unit Capacity (Fn7)69

Adjusting Target Pressure (Fn8)69

Low Ambient Kit Function (Fn9)70

High Efficiency Function (Cooling Operation) (Fn10)70

High Efficiency Function Operation (Auto Dust Throw Mode) (Fn11)71

Smart Load Control (Slc) Function72

Humidity Reference (Fn16)73

Power Consumption Display (Fn21)73

Overall Defrost Operating In Low Temperatures (Heating) (Fn22)74

Drain Pan Heater (Optional) Function (Fn23)74

Comfort Cooling (Id10)75

Pump Down (Se1, Pd)76

Pump Out (Se2, Po)77

Pump Out For Heat Recovery Systems78

Pump Out For Heat Pump Systems79

Vacuum Mode (Se3, Vacc)80

Manual Back Up For Inverter Compressor (Se4)81

Forced Oil Return (Se5, 01)81

Forced Defrost (Se6, Def)82

Cycle Data View (Se8)83

Refrigerant Sound Reduction Mode84

Fan Low Sound In Heating (Se11)85

Number Of Partial Defrosts (Se12)85

Level Change Of Error Code Ch200 (Se14)86

Auto Back Up For Inverter Compressor87

Setting Optional Modes87

Heat Recovery Units Parts Functions88

Heat Recovery Unit Parts Diagram88

Prhr022A Heat Recovery Unit89

Dimensional Diagrams89

Prhr032A Heat Recovery Unit90

Prhr042A Heat Recovery Unit91

Wiring Diagram92

Refrigerant Circuit Diagram93

Valve Control94

Oil Return/Defrost Control95

Liquid Bypass Control95

Heat Recovery Units95

Setting Outdoor Units To Heat Pump Or Heat Recovery System96

Setting Outdoor Units In Dual/Triple Frame Systems96

Outdoor Unit Dip Switch Settings96

Heat Recovery Unit Settings97

Addressing With Heat Recovery Units97

Main Function Of Sw02M98

Due To Our Policy Of Continuous Product Innovation, Some Specifications May Change Without Notification98

Sw05M Function (Rotary Switch For Addressing Heat Recovery Units)101

Indoor Unit Auto Addressing Procedure103

Indoor Unit Addressing104

Auto Addressing For Pipe Detection105

Pipe Detection Addressing106

Manual Addressing For Pipe Detection107

Manual Addressing For Pipe Detection Example (Non-Zone Setting)108

Manual Addressing For Pipe Detection Example (Zone Setting)109

Example Of Checking The Valve Address110

Identifying The Manual Valve Address110

Test Run Checklist111

Troubleshooting Main Components111

Main Component Errors112

Self Diagnostics Check113

Run Self Diagnostics Check113

Checking The Compressor114

Checking The Outdoor Unit Fan Motor115

Checking The Electronic Expansion Valves116

Checking The Phase Diode Bridge119

Checking The Inverter Compressor Phase Diode Bridge119

Checking The Inverter Insulated-Gate Bipolar Transistor120

Checking Intelligent Power Module (Ipm)120

Checking The Fan Intelligent Power Module (Ipm)121

Sensors And Outdoor Fan122

Checking The High / Low Pressure Sensors122

Checking The Outdoor Fan122

Checking The Valves123

Oil Return Solenoid Valve123

Partial Defrost Solenoid Valve123

Supercooled Bypass Valve123

Checking The Four-Way Reverse Valve124

Checking The Temperature Sensors124

Error Code General Information125

Error Code Tables126

Error Code Display126

Nomenclature Definitions126

Error Nos. 01, 02, 06, And 17136

Error No. 03137

Error No. 04138

Error No. 05140

Error No. 09141

Error No. 10142

Dismantling/Servicing The Control Box And Inverter Pcb143

Error No. 21144

Error No. 22146

Error No. 23148

Error No. 24149

Error No. 25150

Error No. 26151

Error No. 29153

Error Nos. 32 And 33155

Error No. 34156

Error No. 35157

Error No. 36158

Error No. 40159

Error Nos. 41 And 47160

Error Nos. 42 And 43161

Error Nos. 44, 45, 46, 49, 153, And 154162

Error No. 50163

Error No. 51(1)164

Error No. 51(2) (For Heat Recovery Systems Only)165

Error No. 52166

Error No. 53168

Error No. 57170

Error No. 60171

Error No. 62172

Error No. 65173

Error No. 67174

Error No. 75176

Error No. 77177

Error No. 79178

Error No. 86180

Error No. 87181

Error No. 104182

Error No. 105185

Error No. 106187

Error No. 107189

Error Nos. 113, 114, And 115190

Error No. 145191

Error No. 150192

Error No. 151193

Error No. 182196

Error No. 187197

Error No. 193198

Error No. 194199

Error No. 2001201

Error Nos. 201C, 202C, 203C202

Error No. 204 C203

Error No. 205 C204

Error No. 206 C205

Error No. 237206

Error No. 238207

Error No. 242208

Replacing The Inverter Pcb Heat Sink209

Checking Input Voltage In Case Of Power On210

Checking Main Pcb Dc Voltage In Case Of Power On211

Checking Converter Dc Link Voltage In Case Of Compressor Operating212

Case Of Power On213

Checking Inverter Pcb In Case Of Power Off214

Power System Wiring Diagram215

Pcb Locations216

Outdoor Unit Parts217

External Pcb218

Inverter Pcb For 208-230V Outdoor Units (17Kw)219

Inverter Pcb For 208-230V Outdoor Units (12Kw)220

Inverter Pcb For 460V Outdoor Units (17Kw)221

Inverter Pcb For 460V Outdoor Units (12Kw)222

Noise Filter Pcb For 208-230V Outdoor Units (17Kw)224

Noise Filter Pcb For 208-230V Outdoor Units (12Kw)224

Noise Filter Pcb For 460V Outdoor Units (17Kw)225

Noise Filter Pcb For 460V Outdoor Units (12Kw)225

Pcbs - Expanded Internal View226

Expanded Frame View For 6-Ton (Small Frame) Outdoor Units229

Expanded Frame View For 8- And 10-Ton (Large Frame) Outdoor Units230

Expanded Frame View For 12- To 20-Ton (Large Frame) Outdoor Units231

Expanded Piping View232

Expanded Piping View For 8- And 10-Ton (Large Frame) Outdoor Units233

Expanded Piping View For 12- To 20-Ton (Large Frame) Outdoor Units234

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Table of Contents

Troubleshooting