Fujitsu AirStage AB24 Manuals

Manuals and User Guides for Fujitsu AirStage AB24. We have 2 Fujitsu AirStage AB24 manuals available for free PDF download: Service Manual

Fujitsu AirStage AB24 Service Manual (199 pages)

Multi Air Conditioning System for Buildings VRF (Freely Selectable Multi Type System)

Brand: Fujitsu | Category: Air Conditioner | Size: 14.16 MB

Table of Contents
3
1 Outline of System

5
- Model Construction
  5
- System Construction Conditions
  7
  - Refrigerant Piping
    7
  - System Wiring
    12
  - Address Setting
    13
    
    Kinds of Address and Setting Range
    13
- 2 Test Run Adjustment
  
  19
  - Check Items before Test Run
    19
  - Test Run Method
    19
    
    Outdoor Pc Board
    20
    
    Test Operation Using Remote Controller
    20
  - Test Run Control
    22
- 3 Refrigerant Pipe System Diagram
  
  23
  - Cooling Only / Heat Pump Type
    23
  - Heat Recovery Type
    24
- 4 Function of Printed Circuit Board
  
  25
  - Pcb Layouts
    25
  - Microprocessor Block Diagram
    26
  - Microprocessor Function List
    28
  - Function and Setting of each Switch
    30
    
    Indoor Unit
    30
    
    Outdoor Unit
    34
    
    Remote Controller
    36
- 5 Outdoor Unit Operation Control
  
  43
  - Compressor Operation Control
    43
    
    Operation Stop Condition
    43
    
    Compressor Output Pattern
    43
    
    Minutes Restart Prevention (3 Min St)
    43
    
    Compressor Recovery Operation
    44
  - Heat Exchanger Capacity Control
    45
  - Outdoor Fan Motor Control
    46
  - Expansion Valve 1/2 Control
    48
  - Four-Way Valve 1 Control
    49
  - Circulating Save Amount Control
    50
  - Solenoid Valve 2 Control
    51
  - Four-Way Valve 5 Control
    52
  - Defrosting Control
    53
  - Oil Return Control
    54
  - Oil Recovery Control
    55
  - Protection Function
    56
  - Pump down Control
    57
6 Indoor Unit Operation

59
- Timer Control
  59
- Fan Control
  64
  - Auto" Position
    64
  - Low" "Med" and "High" Position
    64
- Master Control
  65
  - Operation Mode Control
    65
  - Cool" Position
    69
  - Heat" Position
    69
  - Fan" Position
    70
- Louver Control
  71
7 Wiring Diagram

74
- Electronic Expansion Valve Control
  74
- Auto Restart
  74
- Drain Pump Operation
  74
  - Indoor Unit
    74
  - Outdoor Unit
    83
8 Troubleshooting

84
- Indoor Unit
  84
  - Normal Operation Display
    84
  - Abnormal Operation Display
    85
- Outdoor Unit
  88
  - Normal Operating Display
    88
  - Abnormal Operation Display
    89
- Remote Control Unit
  90
- Error Code & Troubleshooting
  91
  - Indoor Unit Troubleshooting
    91
  - Outdoor Unit Troubleshooting
    96
  - Central Remote Controller Troubleshooting
    109
  - Troubleshooting (no Error Code)
    114
  - Others 1
    115
- Others
  124
  - Characteristics of Thermistor
    124
  - Pressure Sensor
    126
  - Electric Expansion Valve
    126
  - Rb Unit (Heat Recovery Type Only)
    126
  - Others
    126
9 In Use of the New Refrigerant R407C

129
10 Disassembly Illustration

134
11 Parts List

180

Fujitsu AirStage AB24 Service Manual (163 pages)

Multi Air Conditioning System for Buildings

Brand: Fujitsu | Category: Air Conditioner | Size: 15.53 MB

Service Manual
1
Table of Contents
3
1 Test Run

6
2 Function of Printed Circuit Board

12
- Pcb Layouts
  13
- Microprocessor Function List
  20
  - Outdoor Unit
    23
- Function and Setting of each Switch
  24
  - Indoor Unit(Compact Wall Mounted Type)
    28
- Remote Controller
  30
  - Outdoor Unit
    31
    
    Rotary Switch Setting
    33
    
    External Output
    33
  - Wired, Simple Remote Controller
    34
  - Central Remote Controller
    36
- Network Convertor
  38
- Outdoor Unit
  43
  - Central Remote Controller / Pc Controller
    44
  - Network Convertor
    46
3 Outdoor Unit Operation Control

49
4 Indoor Unit Operation

61
5 Troubleshooting

77
- Normal Operation Display
  77
- Normal Operating Display
  79
- Wired Remote Controller
  81
- Simple Remote Controller
  81
- Trouble Shooting with Error Code
  86
- Trouble Shooting with no Error Code
  112
- Operation Not Trouble
  122
- Examples of System Setting
  128
- Start and Stop of the Pump down
  132
- A Flow Chart of Pump down
  132
  - Brazing Work
    134
  - Additional Charge
    135
6 Appending Data 1 (Installation)

135
- What Is Cfc/Hcfc/Hfc
  138
- Characteristics of R22 and R407C
  138
  - Heat Exchanger
    139
  - Check Valve
    139
  - Ball Valve
    140
  - Pressure Switch
    140
- Pressure Sensor
  145
- Electric Expansion Valve
  145
- Rb Unit
  145

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Fujitsu AirStage AB24 Manuals

Fujitsu AirStage AB24 Service Manual (199 pages)

Table of Contents

1 Outline of System

2 Test Run Adjustment

3 Refrigerant Pipe System Diagram

4 Function of Printed Circuit Board

5 Outdoor Unit Operation Control

6 Indoor Unit Operation

7 Wiring Diagram

8 Troubleshooting

9 In Use of the New Refrigerant R407C

10 Disassembly Illustration

11 Parts List

Fujitsu AirStage AB24 Service Manual (163 pages)

Table of Contents

1 Test Run

2 Function of Printed Circuit Board

3 Outdoor Unit Operation Control

4 Indoor Unit Operation

5 Troubleshooting

6 Appending Data 1 (Installation)

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