Mitsubishi Electric HP120TNU-A Manuals

Table of Contents

• 10

  Table of Contents

  • • 2

      Safety Precautions

  • 14

    Chapter 1 Check before Servicing

    • 14

      Preparation for Piping Work
    • 14

      Read before Servicing
    • 15

      Tool Preparation
      • 16

        Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil
    • 16

      Piping Materials
    • 17

      Storage of Piping Materials
    • 17

      Pipe Processing
    • 18

      Characteristics of the New and Conventional Refrigerants
    • 19

      Refrigerant Oil
      • 20

        Working with Refrigerant Piping
    • 20

      Pipe Brazing
    • 21

      Air Tightness Test
    • 22

      Vacuum Drying
    • 24

      Refrigerant Charging
      • 25

        Precautions for Wiring
      • 27

        Cautionary Notes On Installation Environment and Maintenance

• 28

  Chapter 2 Restrictions

  • 30

    System Configurations
  • 31

    Types and Maximum Allowable Length of Cables
  • 33

    Switch Settings
  • 34

    Address Settings List
  • 34

    M-NET Address Settings
  • 35

    Outdoor Unit Centralized Controller Switch Setting
  • 35

    Outdoor Unit Power Jumper Connector Connection
  • 36

    Miscellaneous Settings
  • 36

    Room Temperature Detection Position Selection
  • 36

    Start/Stop Control of Indoor Units
  • 37

    Various Control Methods Using the Signal Input/Output Connector On Outdoor Unit
  • 40

    Demand Control Overview
  • 41

    System Connection Example
  • 42

    Example System with an MA Remote Controller
  • 42

    Single Refrigerant System (Automatic Indoor/Outdoor Address Startup)
  • 44

    Single Refrigerant System with Two or More LOSSNAY Units
  • 46

    Grouped Operation of Units in Separate Refrigerant Circuits
  • 48

    System with a Connection of System Controller to Centralized Control Transmission Line
  • 50

    System with a Connection of System Controller to Indoor-Outdoor Transmission Line
  • 52

    System with Multiple BC Controllers
  • 55

    Example System with an ME Remote Controller
  • 55

    System with a Connection of System Controller to Centralized Control Transmission Line
  • 57

    Example System with an MA and an ME Remote Controller
  • 57

    System with a Connection of System Controller to Centralized Control Transmission Line
  • 60

    2-10 Restrictions On Refrigerant Pipes
  • 60

    Restrictions On Refrigerant Pipe Length
  • 67

    Restrictions On Refrigerant Pipe Size
  • 68

    BC Controller Connection Method
  • 75

    Outdoor Twinning Kit

• 76

  Chapter 3 Major Components, Their Functions and Refrigerant Circuits

  • 78

    External Appearance and Refrigerant Circuit Components of Outdoor Unit
  • 78

    External Appearance of Outdoor Unit
  • 79

    Outdoor Unit Refrigerant Circuits
  • 80

    Outdoor Unit Refrigerant Circuit Diagrams
  • 81

    Functions of the Major Components of Outdoor Unit
  • 84

    Functions of the Major Components of Indoor Unit
  • 85

    External Appearance and Refrigerant Circuit Components of BC Controller
  • 88

    BC Controller Refrigerant Circuit Diagrams
  • 90

    Functions of the Major Components of BC Controller

• 94

  Chapter 4 Electrical Components and Wiring Diagrams

  • 96

    Outdoor Unit Circuit Board Arrangement
  • 96

    Outdoor Unit Control Box
  • 99

    Control Board
  • 99

    Outdoor Unit Circuit Board Components
  • 100

    Power-Supply Board (PS Board)
  • 101

    Inverter Board (INV Board)
  • 103

    Fan Board
  • 105

    Noise Filter
  • 107

    Capacitor Board (CAP Board)
  • 109

    Outdoor Unit Electrical Wiring Diagrams
  • 111

    Transmission Booster Electrical Wiring Diagrams
  • 112

    BC Controller Circuit Board Arrangement
  • 112

    BC Controller Control Box
  • 113

    BC Board
  • 113

    BC Controller Circuit Board Components
  • 114

    Four-Relay Board
  • 114

    Ten-Relay Board
  • 115

    BC Controller Electrical Wiring Diagrams

• 124

  Chapter 5 Control

  • 126

    Dipswitch Functions and Factory Settings
  • 126

    Outdoor Unit Switch Functions and Factory Settings
  • 132

    Indoor Unit Switch Functions and Factory Settings
  • 133

    Remote Controller Switch Functions and Factory Settings
  • 135

    BC Controller Switch Settings
  • 136

    Initial Control
  • 136

    Outdoor Unit Control
  • 136

    Overview
  • 136

    Rotation Control
  • 137

    Refrigerant Bypass Control
  • 137

    Startup Control
  • 138

    Frequency Control
  • 139

    Defrost Operation Control
  • 142

    Continuous Heating Mode Control
  • 144

    Outdoor Unit Fan Control
  • 144

    Refrigerant Recovery Control
  • 145

    Control at Initial Startup
  • 145

    Control of Controller Cooling Function (Electronic Expansion Valve <LEV9>)
  • 145

    Expansion Valve Control (Lev2A, Lev2B, and Lev2D)
  • 145

    Injection Control (Linear Expansion Valve <LEV4>)
  • 147

    Emergency Operation Mode
  • 149

    Operation Mode
  • 150

    Control of IH Energization Without the Compressor in Operation
  • 150

    Demand Control
  • 151

    BC Controller Control

• 152

  Chapter 6 Test Run

  • 154

    Read before Test Run
  • 155

    Operation Characteristics and Refrigerant Charge
  • 156

    Checking the Refrigerant Charge During Operation
  • 156

    Evaluating and Adjusting Refrigerant Charge
  • 156

    Maximum Refrigerant Charge
  • 156

    Refrigerant Overcharge and Undercharge
  • 157

    Refrigerant Charge Adjustment Mode
  • 159

    The Following Symptoms Are Normal

• 160

  Chapter 7 Troubleshooting Using Error Codes

  • 164

    Error Code and Preliminary Error Code Lists
  • 169

    Error Code Definitions and Solutions: Codes [0 - 999]
  • 169

    Error Code Definitions and Solutions: Codes [1000 - 1999]
  • 169

    Error Code [0403]
  • 170

    Error Code [0404]
  • 170

    Error Code [1102]
  • 171

    Error Code [1301]
  • 173

    Error Code [1302] (During Operation)
  • 174

    Error Code [1302] (At Startup)
  • 174

    Error Code [1500]
  • 175

    Error Code Definitions and Solutions: Codes [2000 - 2999]
  • 175

    Error Code [2500] (Models with a Drain Sensor)
  • 176

    Error Code [2500] (Models with a Float Switch)
  • 177

    Error Code [2502] (Models with a Drain Sensor)
  • 178

    Error Code [2502] (Models with a Float Switch)
  • 179

    Error Code [2503]
  • 179

    Error Code [2600]
  • 180

    Error Code [2601]
  • 181

    Error Code Definitions and Solutions: Codes [3000 - 3999]
  • 181

    Error Code [3121]
  • 182

    Error Code [3511]
  • 182

    Error Code [3512]
  • 184

    Error Code Definitions and Solutions: Codes [4000 - 4999]
  • 184

    Error Code [4102]
  • 185

    Error Code [4106]
  • 185

    Error Code [4109]
  • 185

    Error Code [4114]
  • 185

    Error Code [4116]
  • 186

    Error Code [4121]
  • 186

    Error Code [4124]
  • 188

    Error Codes [4220, 4225, 4226] Detail Code 108
  • 189

    Error Codes [4220, 4225, 4226] Detail Code 108
  • 190

    Error Code [4220] Detail Code 110
  • 190

    Error Codes [4220, 4225, 4226] Detail Code 109
  • 191

    Error Code [4220] Detail Code 123
  • 191

    Error Codes [4220, 4225, 4226] Detail Code 111, 112
  • 192

    Error Code [4220] Detail Code 129
  • 192

    Error Codes [4220, 4225, 4226] Detail Code 131
  • 193

    Error Code [4230] Detail Code 125
  • 193

    Error Codes [4235, 4236] Detail Code 125
  • 194

    Error Codes [4240, 4245, 4246]
  • 195

    Error Codes [4250, 4255, 4256] Detail Code 101
  • 196

    Error Codes [4250, 4255, 4256] Detail Code 104
  • 197

    Error Codes [4250, 4255, 4256] Detail Code 105
  • 198

    Error Codes [4250, 4255, 4256] Detail Codes 106 and 107
  • 200

    Error Code [4260]
  • 201

    Error Code Definitions and Solutions: Codes [5000 - 5999]
  • 201

    Error Codes [5101, 5102, 5103, 5104]
  • 202

    Error Codes [5103,5104,5105,5107,5115]
  • 203

    Error Code [5110]
  • 203

    Error Codes [5111,5112,5115,5116]
  • 204

    Error Code [5201,5203]
  • 204

    Error Code [5201]
  • 205

    Error Code [5301] Detail Code 115
  • 206

    Error Code [5301] Detail Code 117
  • 206

    Error Code [5301] Detail Code 119
  • 207

    Error Code [5301] Detail Code 120
  • 207

    Error Code [5301] Detail Code 127
  • 208

    Error Code [5701]
  • 208

    Error Codes [5305, 5306] Detail Code 135
  • 208

    Error Codes [5305, 5306] Detail Code 136
  • 209

    Error Code Definitions and Solutions: Codes [6000 - 6999]
  • 209

    Error Code [6201]
  • 209

    Error Code [6202]
  • 209

    Error Code [6600]
  • 210

    Error Code [6601]
  • 210

    Error Code [6602]
  • 211

    Error Code [6603]
  • 212

    Error Code [6606]
  • 213

    Error Code [6607] Error Source Address = BC Controller (BC)
  • 213

    Error Code [6607] Error Source Address = Outdoor Unit (OC)
  • 214

    Error Code [6607] Error Source Address = Indoor Unit (IC)
  • 216

    Error Code [6607] Error Source Address = LOSSNAY (LC)
  • 217

    Error Code [6607] Error Source Address = ME Remote Controller
  • 218

    Error Code [6607] Error Source Address = System Controller
  • 219

    Error Code [6607] All Error Source Addresses
  • 220

    Error Code [6607] No Error Source Address
  • 221

    Error Code [6608]
  • 221

    Error Code [6831]
  • 222

    Error Code [6832]
  • 222

    Error Code [6833]
  • 223

    Error Code [6834]
  • 223

    Error Code [6840]
  • 224

    Error Code [6841]
  • 224

    Error Code [6842]
  • 225

    Error Code [6843]
  • 225

    Error Code [6846]
  • 230

    Error Code Definitions and Solutions: Codes [7000 - 7999]
  • 230

    Error Code [7100]
  • 231

    Error Code [7101]
  • 232

    Error Code [7102]
  • 233

    Error Code [7105]
  • 233

    Error Code [7106]
  • 233

    Error Code [7107]
  • 233

    Error Code [7110]
  • 234

    Error Code [7111]
  • 235

    Error Code [7113]
  • 235

    Error Code [7117]
  • 236

    Error Code [7130]

• 240

  Chapter 8 Troubleshooting Based On Observed Symptoms

  • 242

    MA Remote Controller Problems
  • 242

    The LCD Does Not Light Up
  • 243

    The LCD Momentarily Lights Up and Then Goes Off
  • 244

    HO" and "PLEASE WAIT" Do Not Go Off the Screen
  • 245

    Air Conditioning Units Do Not Operate When the ON Button Is Pressed
  • 246

    ME Remote Controller Problems
  • 246

    The LCD Does Not Light Up
  • 247

    The LCD Momentarily Lights Up and Then Goes Off
  • 248

    HO" or "Waiting for
  • 250

    88", "Request Denied." Appears On the LCD
  • 251

    Refrigerant Control Problems
  • 251

    Units in the Cooling Mode Do Not Operate at Expected Capacity
  • 253

    Units in the Heating Mode Do Not Operate at Expected Capacity
  • 255

    Outdoor Units Stop at Irregular Times
  • 256

    Checking Transmission Waveform and for Electrical Noise Interference
  • 256

    M-Net
  • 259

    Comparing the High-Pressure Sensor Measurement and Gauge Pressure
  • 259

    Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems
  • 261

    Comparing the Low-Pressure Sensor Measurement and Gauge Pressure
  • 263

    Troubleshooting Solenoid Valve Problems
  • 264

    Troubleshooting Outdoor Unit Fan Problems
  • 265

    General Overview On LEV Operation
  • 265

    Troubleshooting LEV Problems
  • 268

    Possible Problems and Solutions
  • 269

    Coil Removal Instructions
  • 271

    Pressure Sensor
  • 271

    Troubleshooting Problems with Major Components On BC Controller
  • 273

    Temperature Sensor
  • 277

    Troubleshooting Flowchart for Levs
  • 282

    Troubleshooting Flowchart for Solenoid Valves
  • 284

    BC Controller Transformer
  • 285

    8-10 Troubleshooting Inverter Problems
  • 285

    Inverter-Related Problems and Solutions
  • 288

    Checking the Inverter for Damage at No-Load
  • 288

    Checking the Inverter for Damage During Compressor Operation
  • 289

    Checking the Fan Board Error Detection Circuit at No Load
  • 289

    Checking the Fan Board for Damage at No Load
  • 289

    Checking the Fan Motor for Ground Fault and Coil Resistance Problems
  • 290

    Checking the Fan Board for Damage with Load
  • 291

    Checking the Installation Conditions
  • 291

    Solutions for the Main Breaker Trip
  • 292

    Solutions for the Main Earth Leakage Breaker Trip
  • 294

    Troubleshooting Problems with IGBT Module
  • 297

    Checking the Fan Inverter Heatsink for Clogging
  • 298

    8-11 Control Circuit
  • 298

    Control Power Supply Function Block
  • 299

    Indoor Unit
  • 300

    Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit
  • 304

    8-12 Measures for Refrigerant Leakage
  • 306

    8-13 Parts Replacement Instructions
  • 306

    Ensuring Maintenance Space (Preparation for the Maintenance of Refrigerant Circuit Parts)
  • 307

    Notes On Wiring Installation
  • 323

    Removal Instructions for the Control Box
  • 325

    Transformer Box Replacement Instructions
  • 329

    Maintenance Procedures for the Heat Exchanger
  • 338

    8-14 BC Controller Maintenance Instructions
  • 341

    Troubleshooting Problems Using the LED Status Indicators On the Outdoor Unit

• 342

  Chapter 9 Usb Function

  • • 344

      Function Overview
    • 344

      Service Overview
    • 345

      System Structure
    • 346

      Necessary Materials
      • 347

        Operation Data Collection and Storage Functions
      • 347

        Preparation
      • 347

        Storing Data On a USB Memory Stick
    • 349

      Collecting Operation Data
    • 350

      Precautions
      • 351

        Software Rewrite Function On the USB
      • 351

        Preparation
      • 351

        Rewriting Software
    • 352

      Precautions
      • 353

        Maintenance LED Display and Troubleshooting
      • 353

        Maintenance LED Display Content List
    • 356

      Troubleshooting

  • 362

    Chapter 10 LED Status Indicators On the Outdoor Unit Circuit Board

    • 362

      10-1 LED Status Indicators
      • 363

        Initial Led Display
      • 364

        Clock Memory Function
    • 365

      LED Status Indicators Table