Daikin FLX25HVET Manuals

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Daikin FLX25HVET Service Manual

Daikin FLX25HVET Service Manual (410 pages)

Super Multi Plus J Series

Brand: Daikin | Category: Heat Pump | Size: 12.38 MB

Table of Contents

Table of Contents
4
Introduction
10
- Safety Cautions
  10
Part 1 List of Function

14
- List of Function
  15
Part 2 Specifications

22
- Outdoor Units
  23
  - Outdoor Unit
    24
  - Indoor Unit
    24
  - Heat Pump
    27
- BP Units
  31
- Indoor Units (for General)
  32
- Duct Connected Type
  35
- Indoor Units (for China)
  47
- Indoor Units (for Taiwan)
  56
- Indoor Units (for Europe)
  65
- Floor Standing Type
  70
Part 3 Printed Circuit Board Connector Wiring Diagram and Name

72
- Printed Circuit Board Connector Wiring Diagram and Name
  73
Part 4 Main Functions Indoor Unit

90
- Main Functions
  91
  - Main Functions in Split Type
    91
    
    Fan Speed Control for Indoor Units
    97
    
    Program Dry Function
    100
    
    Night Set Mode
    102
    
    Intelligent Eye
    103
    
    Program Dry Operation
    105
    
    Freeze Protection Function
    107
    
    Powerful Operation
    109
  - Skyair
    111
  - Cautions When Skyair [Auto] [FAN] Are Used
    113
Part 5 Main Functions Outdoor Unit / BP Unit

114
- Refrigerant System and Function of Functional Parts of Outdoor Unit
  116
  - Of Outdoor Unit
    116
  - Major Functional Parts
    117
  - Protective Devices, Thermistors, Sensors
    119
- Protection Device
  120
  - Outdoor Unit
    120
  - BP Unit
    121
- System Control
  122
  - Outline of System Control
    122
  - Mode Configuration
    123
  - Standby Control at Power on
    124
  - Cooling / Heating Standby Operation at Startup
    125
  - Equalizing Control
    126
  - Determination of Initial Frequency
    128
  - Oil Return Operation
    133
  - Defrost Operation
    135
  - PART 5 3.8 Defrost Operation
    135
  - Pre-Equalization Standby Operation
    136
  - Equalizing Control
    137
  - Capacity Control
    139
  - Peak Cut Control
    141
  - Freeze-Up Prevention
    142
  - Gas Shortage Malfunction
    143
  - Discharge Pipe Control
    144
  - Input Current Control
    145
  - Wet Protection Control I
    148
  - Electric Parts Cooling and Electric Parts / Fin Temperature Control
    149
  - Differential Pressure Control
    150
  - Year-Round Cooling-Only Function
    151
  - Nighttime Low Noise Control
    152
  - PI Control
    153
  - Warm-Up Function
    154
  - Compressor Protection Control
    155
  - Fan Control
    156
  - Motorized Valve Control of Outdoor Unit
    158
  - Cooling Outdoor Unit SC Control
    164
  - BP Unit Motorized Valve Control
    165
  - Gas Pipe Isothermal Control in Cooling Operation
    168
  - SH Control in Cooling Operation
    170
  - SC Control in Heating Operation
    172
  - Heat Exchanger Isothermal Control in Heating Operation
    174
  - BP Unit Motorized Valve Control in High Discharge Pipe Temperature
    175
  - Inter-BP Units Heating Heat Exchanger Isothermal Control
    176
  - Inter-BP Units Gas Pipe Isothermal Control
    177
  - BP Unit Motorized Valve Control by Target Discharge Pipe Temperature
    178
  - 4-Way Valve Operation
    179
  - JIS Mode
    180
  - Pump down Operation
    181
  - Protection Control of Skyair Indoor Units
    182
Part 6 Flow of Refrigerant

184
- Flow of Refrigerant
  185
Part 7 Operations

204
- Remote Controller
  205
  - Wireless Remote Controller
    205
  - Si18
    214
  - Wired Remote Controller
    215
Part 8 Operating Test

218
- Operating Test
  219
  - Test Operation Switch
    222
  - Pump down Operation Switch
    223
  - Record of the Installation Position
    224
- Method of Field Set
  225
Part 9 Service Diagnosis

238
- Troubleshooting - Split Type Indoor Unit
  239
  - Troubleshooting with the Operation Lamp
    239
  - Service Check Function
    241
  - Code Indication on the Remote Controller
    243
  - Troubleshooting
    244
  - Troubleshooting Detail
    245
- Troubleshooting - Skyair Indoor Unit
  259
- Troubleshooting - Outdoor Unit Related
  273
  - The Unit Runs but Doesn't Cool (Heat) the Room
    273
  - Seg. Display on the Outdoor P. C. Board
    275
  - Troubleshooting Detail
    276
    
    Compressor Lock
    277
    
    Transmission Error between Outdoor Unit and Bp Unit
    304
    
    Transmission Error between Indoor Unit and Bp Unit
    306
  - How to Check
    313
    
    Service Diagnosis
    315
    
    Thermistor Resistance Check
    318
    
    Power Supply Waveforms Check
    321
- BP Unit Trouble Diagnosis
  323
  - PCB Parts Layout
    323
  - LED on Branch Provider Unit (Diagnosis Leds)
    323
Part 10 Removal Procedure

324
- For BPMK928B42 · 43
  325
- Outdoor Unit
  333
  - Removal of Outer Panels
    333
  - Removal of PCB and Electrical Box
    334
  - Removal of Propeller Fans and Fan Motors
    342
  - Removal of Thermistor
    344
  - Removal of Motorized Valve
    345
  - Removal of Sound Insulation
    347
  - Removal of Compressor
    349
  - Removal of 4-Way Valve
    351
- Indoor Unit
  355
  - Refer Following Table for Indoor Unit Removal Procedure
    355
Part 11 Cautions before Operation

356
- Installation
  357
  - Outdoor Unit
    357
  - BP Unit
    359
- Wiring
  361
  - Outdoor Unit
    361
  - BP Unit
    363
  - Outdoor Unit Rotary Switch Setting
    365
- Others
  367
Part 12 Appendix

372
- Piping Diagrams
  373
  - Outdoor Units
    373
  - BP Units
    375
  - Indoor Units
    376
- Wiring Diagrams
  383
  - Outdoor Units
    383
  - BP Units
    387
  - Indoor Units
    388
Index

402

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