Hitachi RAS-3-HVNC Air Conditioner Manuals

Manuals and User Guides for Hitachi RAS-3-HVNC Air Conditioner. We have 1 Hitachi RAS-3-HVNC Air Conditioner manual available for free PDF download: Service Manual

Hitachi RAS-3-HVNC Service Manual

Hitachi RAS-3-HVNC Service Manual (480 pages)

UTOPIA IVX PREMIUM / IVX STANDARD H(V)N(P/C)(E) SERIES

Brand: Hitachi | Category: Air Conditioner | Size: 32.95 MB

Table of Contents

Service Manual
1
Contents

3
- Table of Contents
  5
- General Information
  5
- Unit Installation
  5
- Electrical Wiring
  6
- Piping Work and Refrigerant Charge
  6
- Control System
  7
- Troubleshooting
  8
- Spare Parts
  9
- Electrial Checks of Main Parts
  13
- Maintenance Notes
  13
1 General Information

15
- General Information
  16
  - General Notes
    16
  - Introduction
    16
  - Environment-Friendly Units
    16
- Safety
  17
  - Applied Symbols
    17
  - Norms and Regulations
    17
  - Unit Installation
    17
- Product Guide
  18
2 Unit Installation

27
3 Piping Work and Refrigerant Charge

65
4 Electrical Wiring

101
- General Notes
  102
  - General Check
    102
- Electrical Wiring Connection for the Outdoor Unit
  104
- Setting the DIP Switches for the Outdoor Unit
  106
  - Quantity and Position of DIP Switches
    106
  - Function of the of DIP Switches and RSW Switches
    107
  - Optional Functions
    108
  - Jumpers
    111
  - Led's Indication
    111
- Common Wiring
  112
  - Electrical Wiring between Outdoor and Indoor Unit
    112
  - Wire Size
    113
- H-LINK II System
  115
- System Control
  120
  - Individual Operation
    120
  - Simultaneous Operation
    121
- Electrical Wiring Diagrams
  122
5 Control System

131
- Device Control System
  132
- Outdoor Units PCB
  134
  - Ras-(2-2.5)Hvnp / Ras-3Hvnc
    134
  - Ras-3Hvnpe
    135
  - Ras-(4-6)H(V)Npe
    136
  - Ras-(4-6)H(V)Nce
    137
  - Ras-(8-10)Hn(P/C)E
    138
  - RAS-12HNP - Preliminary Data
    139
  - RAS-12HNC - Preliminary Data
    140
- Protection and Safety Control
  141
- Standard Operation Sequence
  142
  - Cooling Operation
    142
  - Dry Operation
    144
  - Heating Operation
    146
  - Automatic Cooling and Heating Operation
    148
  - Defrost Operation Control
    149
- Standard Control Functions
  152
6 Optional Functions

159
7 Test Run

181
8 Troubleshooting

197
9 Spare Parts

303
- Ras-(2-2.5)Hvnp
  304
  - Cycle and Structural Parts
    304
  - Parts Table
    305
- Ras-3Hvnc
  306
  - Cycle and Structural Parts
    306
  - Parts Table
    307
- Ras-3Hvnpe
  308
  - Cycle and Structural Parts
    308
  - Electrical Parts
    309
  - Parts Name
    310
- Ras-(4-6)H(V)Npe
  311
  - Cycle and Structural Parts
    311
  - Electrical Parts
    312
  - Parts Name
    314
- Ras-(4-6)H(V)Nce
  316
  - Cycle and Structural Parts
    316
  - Electrical Parts
    318
  - Parts Name
    320
- Ras-(8-10)Hn(P/C)E
  322
  - Cycle and Structural Parts
    322
  - Electrical Parts
    324
  - Parts Name
    325
- Ras-12Hn(P/C)
  328
  - Cycle and Structural Parts
    328
  - Electrical Parts
    329
  - Parts Name
    330
10 Servicing

333
- Introduction
  337
- Servicing for Outdoor Units RAS-(2-2.5)HVNP and RAS-3HVNC
  338
  - Removing Pipe Cover
    338
  - Removing
    338
  - Removing Outdoor Fan
    338
  - Removing the Compressor
    339
  - Removing High Pressure Switch and Pressure Switch for Control
    341
  - Removing Four-Way Valve Coil
    342
  - Removing Electronic Expansion Valve Coil
    342
  - Removing Electrical Components
    343
- Servicing for Premium Series
  346
  - Outdoor Unit RAS-3HVNPE
    346
    
    Remove Outlet Grille
    346
    
    Removing Service Cover
    346
    
    Removing Bottom Service Cover and Rear Cover
    347
    
    Removing Upper Cover
    347
    
    Removing Outdoor Fan Motor
    348
    
    Removing Electrical Box
    349
    
    Removing the Compressor
    350
    
    Removing the High Pressure Switch and Pressure Switch for Control
    353
    
    Opening Electrical Box (P Plate)
    354
    
    Removing Reversing Valve Coil
    354
    
    Removing Electronic Expansion Valve Coil
    355
    
    Removing Solenoid Valve Coil (SVC)
    355
    
    Removing Reversing Valve
    356
    
    Removing Electrical Components
    357
    
    Removing Electronic Expansion Valve and Solenoid Valve
    357
    
    Removing Other Electrical Components
    359
  - Outdoor Units RAS-(4-6)H(V)NPE
    360
    
    Removing Air Outlet Grille
    360
    
    Removing Service Cover
    360
    
    Removing the Bottom Service Cover and Rear Cover
    361
    
    Removing Upper Cover
    361
    
    Removing Outdoor Fan Motor
    362
    
    Removing Electrical Box
    363
    
    Removing the Compressor
    364
    
    Removing the High Pressure Switch and Pressure Switch for Control
    367
    
    Opening Electrical Box (P Plate)
    368
    
    Removing Reversing Valve Coil
    368
    
    Removing Electronic Expansion Valve Coil
    369
    
    Removing Solenoid Valve Coil (SVA and SVC)
    369
    
    Removing Reversing Valve
    370
    
    Removing Electronic Expansion Valve and Solenoid Valve
    371
    
    Removing Electrical Components
    372
    
    Removing Other Electrical Components
    373
  - Oudoor Units RAS-(8-10)HNPE
    374
    
    Removing Air Outlet Grille
    374
    
    Removing Service Cover
    374
    
    Removing the Bottom Service Cover and Rear Cover
    375
    
    Removing Upper Cover
    375
    
    Removing Outdoor Fan Motor
    376
    
    Removing Electrical Box
    377
    
    Removing the Compressor
    378
    
    Opening Electrical Box (P-Mounting Plate)
    381
    
    Removing High Pressure Switch and Pressure Switch for Control
    381
    
    Removing Reversing Valve Coil
    382
    
    Removing Electronic Expansion Valve Coil
    383
    
    Removing Solenoid Valve Coil (SVA and SVC)
    383
    
    Removing Reversing Valve
    384
    
    Removing Electronic Expansion Valve and Solenoid Valve
    385
    
    Removing Electrical Components
    386
    
    Removing Other Electrical Components
    388
  - Outdoor Units RAS-12HNP
    389
    
    Removing Air Outlet Grille
    389
    
    Removing Service Cover
    389
    
    Removing the Bottom Service Cover and Rear Cover
    390
    
    Removing Upper Cover
    390
    
    Removing Outdoor Fan Motor
    391
    
    Removing Electrical Box
    392
    
    Removing the Compressor
    393
    
    Removing High Pressure Switch and Pressure Switch for Control
    396
    
    Removing Reversing and Solenoid Valves Coils
    397
    
    Removing Electronic Expansion Valve Coil
    398
    
    Removing Reversing Valve
    399
    
    Removing Electronic Expansion Valve and Solenoid Valve
    400
    
    Removing Electrical Components
    402
    
    Removing Other Electrical Components
    404
- Servicing for Standard Series
  405
  - Outdoor Units RAS-(4-6)H(V)NCE
    405
    
    Remove Outlet Grille
    405
    
    Removing Service Cover
    405
    
    Removing Bottom Service Cover and Rear Cover
    406
    
    Removing Upper Cover
    406
    
    Removing Outdoor Fan Motor
    407
    
    Removing Electrical Box
    408
    
    Removing the Compressor
    409
    
    Removing the High Pressure Switch and Pressure Switch for Control
    415
    
    Opening Electrical Box (P Plate)
    416
    
    Removing Reversing Valve Coil
    416
    
    Removing Electronic Expansion Valve Coil
    417
    
    Removing Solenoid Valve Coil (SVA)
    417
    
    Removing Reversing Valve
    418
    
    Removing Electrical Components
    419
    
    Removing Electronic Expansion Valve and Solenoid Valve
    419
    
    Removing Other Electrical Components
    421
  - Outdoor Units RAS-(8-10)HNCE
    422
    
    Removing Air Outlet Grille
    422
    
    Removing Service Cover
    422
    
    Removing the Bottom Service Cover and Rear Cover
    423
    
    Removing Upper Cover
    423
    
    Removing Outdoor Fan Motor
    424
    
    Removing Electrical Box
    425
    
    Removing the Compressor
    426
    
    Opening Electrical Box (P-Mounting Plate)
    429
    
    Removing High Pressure Switch and Pressure Switch for Control
    429
    
    Removing Reversing Valve Coil
    430
    
    Removing Electronic Expansion Valve Coil
    431
    
    Removing Solenoid Valve Coil (SVA)
    431
    
    Removing Reversing Valve
    432
    
    Removing Electronic Expansion Valve and Solenoid Valve
    433
    
    Removing Electrical Components
    434
    
    Removing Other Electrical Components
    436
  - Outdoor Units RAS-12HNC
    437
    
    Removing Air Outlet Grille
    437
    
    Removing Service Cover
    437
    
    Removing the Bottom Service Cover and Rear Cover
    438
    
    Removing Upper Cover
    438
    
    Removing Outdoor Fan Motor
    439
    
    Removing Electrical Box
    440
    
    Opening Electrical Box (P-Mounting Plate)
    444
    
    Removing High Pressure Switch and Pressure Switch for Control
    444
    
    Removing Reversing and Solenoid Valves Coils
    445
    
    Removing Electronic Expansion Valve Coil
    446
    
    Removing Reversing Valve
    447
    
    Removing Electronic Expansion Valve and Solenoid Valve
    448
    
    Removing Electrical Components
    449
    
    Removing Other Electrical Components
    451
    
    Electrial Checks of Main Parts
    453
    
    Inverter
    454
    
    Inverter Time Chart
    456
    
    Protective Function
    457
    
    Overload Control
    458
    
    Thermistor
    459
    
    Electronic Expansion Valve
    461
    
    High Pressure Protection Device
    462
    
    Noise Filter (NF)
    464
    
    Noise Filter for 1~ (230V/50Hz)
    465
    
    Capacitor (CB1 CB2)
    466
    
    Reactor (DCL)
    467
    
    Scroll Compressor
    468
    
    Maintenance Notes
    469
    
    Insufficient Cooling Performance When a Long Piping Is Applied
    471
    
    Not Cooling Well Due to Insufficient Installation Space for the Outdoor Unit
    472
    
    Maintenance Work
    473
    
    Service and Maintenance Record
    474
    
    Service and Maintenance Record Using the 7-Segment Display
    475
    
    Service and Maintenance Record by Remote Control Switch
    477
    
    Pump-Down Method for Replacing the Compressor
    478

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