Hitachi RAS-(4-12)HNC(1)(E) Manuals

Manuals and User Guides for Hitachi RAS-(4-12)HNC(1)(E). We have 1 Hitachi RAS-(4-12)HNC(1)(E) manual available for free PDF download: Service Manual

Hitachi RAS-(4-12)HNC(1)(E) Service Manual

Hitachi RAS-(4-12)HNC(1)(E) Service Manual (499 pages)

Brand: Hitachi | Category: Air Conditioner | Size: 74.07 MB

Table of Contents

Service Manual
1
Contents
3
Table of Contents
5
General Index
5
1 General Information

15
- General Information
  16
  - General Notes
    16
    
    IVX Premium
    16
    
    IVX Standard
    16
  - Introduction
    16
  - Environment-Friendly Units
    17
- Safety
  18
  - Applied Symbols
    18
  - Norms and Regulations
    18
- Product Guide
  19
2 Unit Installation

29
3 Piping Work and Refrigerant Charge

75
4 Electrical Wiring

111
- General Notes
  112
  - General Check
    112
- Electrical Wiring Connection for the Outdoor Unit
  114
- Setting the DIP Switches for the Outdoor Unit
  116
- Electrical Settings
  122
  - Outdoor and Indoor Unit Electrical Wiring
    122
  - Wire Size
    123
    
    Connection Wiring
    123
    
    Main Switch Protection
    124
- H-LINK II System
  125
- System Control
  130
  - Individual Operation
    130
  - Simultaneous Operation
    131
- Electrical Wiring Diagrams
  132
  - RAS-(2-2.5)HVNP1 / RAS-3HVNC1 (1~ 230V 50Hz)
    132
  - RAS-3HVNP1E (1~ 230V 50Hz)
    134
  - RAS-(4-6)HVNP1E (1~ 230V 50Hz)
    136
  - RAS-(4-6)HNP1E (3N~ 400V 50Hz)
    138
  - RAS-(4-6)HVNC1E (1~ 230V 50Hz)
    140
  - RAS-(4-6)HNC1E (3N~ 400V 50Hz)
    142
  - RAS-(8-10)HN(P/C)E (3N~ 400V 50Hz)
    144
  - RAS-12HN(P/C) (3N~ 400V 50Hz)
    146
5 Control System

149
- Device Control System
  150
- Outdoor Units PCB
  152
  - Ras-(2-2.5)Hvnp1 / Ras-3Hvnc1
    152
  - Ras-3Hvnp1E
    153
  - Ras-(4-6)H(V)Np1E
    154
  - Ras-(4-6)H(V)Nc1E
    155
  - Ras-(8-10)Hn(P/C)E
    156
  - Ras-12Hn(P/C)
    157
- Protection and Safety Control
  158
  - Compressor Protection
    158
  - Safety and Control Device Setting for the Outdoor Units
    158
- Standard Operation Sequence
  159
  - Cooling Operation
    159
  - Dry Operation
    161
  - Heating Operation
    163
  - Automatic Cooling and Heating Operation
    165
  - Defrost Operation Control
    166
    
    Defrosting Operation
    166
    
    Condition for Starting Defrost
    167
    
    Condition for Completing Defrost Operation
    168
- Standard Control Functions
  169
6 Optional Functions

175
7 Test Run

205
8 Troubleshooting

221
9 Spare Parts

333
- Ras-(2-2.5)Hvnp1
  334
  - Cycle and Structural Parts
    334
  - Location of Spare Parts in the Unit
    334
  - Parts Table
    335
- Ras-3Hvnc1
  336
  - Cycle and Structural Parts
    336
  - Parts Table
    337
- Ras-3Hvnp1E
  338
  - Cycle and Structural Parts
    338
  - Electrical Parts
    339
  - Parts Name
    340
- Ras-(4-6)H(V)Np1E
  341
  - Cycle and Structural Parts
    341
  - Electrical Parts
    342
  - Parts Name
    344
- Ras-(4-6)H(V)Nc1E
  346
  - Cycle and Structural Parts
    346
  - Electrical Parts
    348
  - Parts Name
    350
- Ras-(8-10)Hn(P/C)E
  352
  - Cycle and Structural Parts
    352
  - Electrical Parts
    354
    
    Servicing
    363
    
    Ras-3Hvnc1
    368
    
    Removing Pipe Cover
    368
    
    Removing Front Cover
    368
    
    Removing the Compressor
    369
    
    Removing High Pressure Switch and Pressure Switch for Control
    371
    
    Removing Four-Way Valve Coil
    371
    
    Removing Electronic Expansion Valve Coil
    372
    
    Removing Electrical Components
    373
    
    Removing Display PCB
    373
    
    Removing Other Electrical Components
    374
    
    Removing Service Cover
    375
    
    Remove Outlet Grille
    375
    
    Removing Upper Cover
    376
    
    Removing Bottom Service Cover and Rear Cover
    376
    
    Removing Outdoor Fan Motor
    377
    
    Removing Electrical Box
    378
    
    Removing the High Pressure Switch and Pressure Switch for Control
    381
    
    High Pressure Switch and Pressure Switch for Control
    381
    
    Low Pressure Switch
    381
    
    Opening Electrical Box (P Plate)
    382
    
    Removing Reversing Valve Coil
    382
    
    Removing Solenoid Valve Coil (SVC)
    383
    
    Removing Reversing Valve
    383
    
    Removing Electronic Expansion Valve and Solenoid Valve
    384
    
    Removing Control PCB (PCB1)
    384
    
    Removing Inverter Module
    384
    
    Ras-(4-6)H(V)Np1E
    386
    
    Removing the Bottom Service Cover and Rear Cover
    387
    
    Removing Reversing and Solenoid Valves Coils
    420
    
    Removing Solenoid Valves
    422
    
    Removing Control PCB (PCB1 and PCB3)
    423
    
    Removing Diode Module (DM)
    423
    
    Removing Transistor Module (IPM)
    424
    
    Electrical Checks of Main Parts
    467
    
    Specifications of Inverter
    468
    
    Inverter Time Chart
    470
    
    Protective Function
    471
    
    Excessive High or Low Voltage for Inverter
    471
    
    Abnormality of Current Sensor
    471
    
    Overcurrent Protection for Inverter
    471
    
    Fin Temperature Increase
    472
    
    Earth Detection
    472
    
    Overload Control
    472
    
    Thermistor
    473
    
    Thermistors for the Outdoor Unit
    473
    
    Thermistors for 4-6HP Standard
    473
    
    Thermistor for Discharge Gas Temperature (THM9)
    474
    
    Thermistor for Outdoor Ambient Temperature (THM7)
    474
    
    Thermistor for Evaporating Temperature of Outdoor Unit in Heating Operation (for Defrosting) (THM8)
    475
    
    Thermistor for Condensing Temperature of RAS-4H(V)RNS3E Outdoor Unit (THM10)
    475
    
    Thermistor for Inverter Fin Temperature (THMI)
    475
    
    Electronic Expansion Valve
    476
    
    High Pressure Protection Device
    477
    
    Noise Filter (NF)
    479
    
    Noise Filter for 3N~ (400V/50Hz)
    479
    
    Noise Filter for 1~ (230V/50Hz)
    480
    
    Capacitor (CB1 CB2) 8/10/12 HP Only
    481
    
    Reactor (DCL) for 3N~ (400V/50Hz)
    482
    
    Reactor (DCL) for 1~ (230V/50Hz)
    482
    
    Scroll Compressor
    483
    
    Reliable Mechanism for Low Vibrating and Low Sound
    483
    
    Principle of Compression
    483
    
    Maintenance Notes
    485
    
    Checking the Power Source and the Wiring Connection
    486
    
    Burnt-Out Compressor Due to an Insufficient Refrigerant Charge
    486
    
    Insufficient Cooling Performance When a Long Piping Is Applied
    487
    
    Abnormally High Operation Sound (in the Ceiling Type Indoor Unit)
    487
    
    Alarm Code “03”
    488
    
    Not Cooling Well Due to Insufficient Installation Space for the Outdoor Unit
    488
    
    Maintenance Work
    489
    
    For the Indoor Unit and the Outdoor Unit
    489
    
    For the Outdoor Unit
    489
    
    Service and Maintenance Record
    490
    
    Service and Maintenance Record Using the 7-Segment Display
    491
    
    Service and Maintenance Record by Remote Control Switch
    493
    
    Pump-Down Method for Replacing the Compressor
    494

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