Daikin FLKS25BVMB

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SiBE05-513A

Table of Contents i

Inverter Pair

B-Series

Cooling Only

Indoor Unit

FLKS25BVMB FLKS25BAVMB

FLKS35BVMB FLKS35BAVMB

Outdoor Unit

RKS25DVMB RKS25D2VMB RKS25D3VMB

RKS35DVMB RKS35D2VMB RKS35D3VMB

Heat Pump

Indoor Unit

FLXS25BVMB FLXS25BAVMB

FLXS35BVMB FLXS35BAVMB

Outdoor Unit

RXS25DVMB RXS25D2VMB RXS25D3VMB

RXS35DVMB RXS35D2VMB RXS35D3VMB

Main Page

Table of Contents3
Introduction6
- Safety Cautions6
Part 1 List of Functions10
List of Functions11
Part 2 Specifications14
Specifications15
- Cooling Only15
- Heat Pump17
Part 3 Printed Circuit Board Connector Wiring Diagram20
Printed Circuit Board Connector Wiring Diagram21
- Indoor Unit21
- Outdoor Unit23
Part 4 Function and Control26
Main Functions27
- Frequency Principle27
- Auto-Swing29
- Fan Speed Control for Indoor Units30
- Programme Dry Function31
- Automatic Operation32
- Thermostat Control33
- NIGHT SET Mode34
- HOME LEAVE Operation35
- Inverter POWERFUL Operation36
- Other Functions37
Function of Thermistor38
- Heat Pump Model38
- Cooling Only Model39
Control Specification40
- Mode Hierarchy40
- Frequency Control41
- Controls at Mode Changing / Start-Up43
- Compressor Protection Function44
- Discharge Pipe Control44
- Input Current Control45
- Freeze-Up Protection Control46
- Heating Peak-Cut Control46
- Fan Control47
- Liquid Compression Protection Function 247
- Defrost Control48
- Electronic Expansion Valve Control49
- Malfunctions52
- Forced Operation Mode53
- Additional Function53
- Facility Setting Jumper (Cooling at Low Outdoor Temperature)54
Part 5 System Configuration56
System Configuration57
Instruction58
- Safety Precautions58
  - Installation Site59
  - Electrical Work59
- Names of Parts60
- Remote Controller62
- Preparation before Operation63
- AUTO · DRY · COOL · HEAT · FAN Operation66
- Adjusting the Air Flow Direction68
- POWERFUL Operation70
- OUTDOOR UNIT SILENT Operation71
- HOME LEAVE Operation72
- TIMER Operation74
- Care and Cleaning76
  - Air Filter77
  - Before a Long Idle Period78
- Troubleshooting79
Part 6 Service Diagnosis84
Caution for Diagnosis85
Problem Symptoms and Measures86
Service Check Function87
Troubleshooting90
- Error Codes and Description90
- Indoor Unit PCB Abnormality91
- Freeze-Up Protection Control or High Pressure Control92
- Fan Motor (AC Motor) or Related Abnormality94
- Thermistor or Related Abnormality (Indoor Unit)95
- Signal Transmission Error (between Indoor and Outdoor Unit)96
- Unspecified Voltage (between Indoor and Outdoor Units)97
- Outdoor Unit PCB Abnormality98
- OL Activation (Compressor Overload)99
- Compressor Lock100
- DC Fan Lock101
- Input over Current Detection102
- Four Way Valve Abnormality103
- Discharge Pipe Temperature Control105
- High Pressure Control in Cooling106
- Compressor System Sensor Abnormality108
- Position Sensor Abnormality109
- DC Voltage / Current Sensor Abnormality110
- Thermistor or Related Abnormality (Outdoor Unit)111
- Electrical Box Temperature Rise113
- Radiation Fin Temperature Rise115
- Output over Current Detection117
- Insufficient Gas119
- Over-Voltage Detection121
Check122
- How to Check122
Part 7 Removal Procedure130
Indoor Unit131
- Removal of the Air Filter / Front Grille131
- Removal of the Front Panel134
- Removal of the Horizontal Blade136
- Removal of the Signal Receiver Unit / Swing Motor137
- Removal of the Discharge Grille138
- Removal of the Drain Pan139
- Removal of the Electrical Box / PCB140
- Removal of the Fan Rotor / Fan Motor143
- Removal of the Heat Exchanger145
Outdoor Unit147
- Removal of Panels and Fan Motor147
- Removal of Electrical Box154
- Removal of Reactor and Partition Plate156
- Removal of Sound Blanket158
- Removal of Four Way Valve160
- Removal of Compressor162
- Removal of PCB164
Part 8 Others168
Others169
- Test Run from the Remote Controller169
- Jumper Settings170
Part 9 Appendix172
Piping Diagrams173
- Indoor Units173
- Outdoor Units174
Wiring Diagrams176
- Indoor Units176
- Outdoor Units176
Index178
Drawings & Flow Charts182

Daikin FLKS25BVMB - Page 2

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