Daikin FTXS25DVMW9 - Page 159

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Check SiENBE04-507A

150 Service Diagnosis

Table of Contents

Table of Contents3
Introduction6
- Safety Cautions6
Part 1 List of Functions10
List of Functions11
Part 2 Specifications16
- Cooling Only17
- Heat Pump30
Part 3 Printed Circuit Board Connector Wiring Diagram48
Printed Circuit Board Connector Wiring Diagram49
- Indoor Unit49
- Outdoor Unit51
Function and Control54
Main Functions55
- Frequency Principle55
- Air Flow Direction Control57
- Fan Speed Control for Indoor Units58
- Programme Dry Function59
- Automatic Operation60
- Thermostat Control61
- NIGHT SET Mode62
- ECONO Mode63
- Intelligent Eye64
- Inverter POWERFUL Operation66
- Other Functions67
Function of Thermistor68
- Heat Pump Model68
- Cooling Only Model69
Control Specification70
- Mode Hierarchy70
- Frequency Control71
- Controls at Mode Changing / Start-Up73
- Discharge Pipe Control74
- Input Current Control75
- Freeze-Up Protection Control76
- Heating Peak-Cut Control76
- Fan Control77
- Liquid Compression Protection Function 277
- Defrost Control78
- Electronic Expansion Valve Control79
- Malfunctions82
- Forced Operation Mode83
- Additional Function83
- Facility Setting Jumper (Cooling at Low Outdoor Temperature)84
Part 5 System Configuration86
System Configuration87
Instruction88
- Safety Precautions88
  - Installation Site89
  - Electrical Work89
- Names of Parts90
- Remote Control92
- Preparation before Operation93
- To Set the Clock95
- AUTO · DRY · COOL · HEAT · FAN Operation96
- To Change the Air Flow Rate Setting97
- Adjusting the Air Flow Direction98
- POWERFUL Operation100
- OUTDOOR UNIT SILENT Operation101
- ECONO Operation102
- INTELLIGENT EYE Operation103
- TIMER Operation105
  - To Use on Timer Operation106
  - To Combine on Timer and off Timer106
- Care and Cleaning107
  - Air Filter108
  - Before a Long Idle Period109
- Troubleshooting110
Part 6 Service Diagnosis114
Caution for Diagnosis115
Problem Symptoms and Measures116
Service Check Function117
Troubleshooting120
- Error Codes and Description120
- Indoor Unit PCB Abnormality121
- Freeze-Up Protection Control or High Pressure Control122
- Fan Motor (DC Motor) or Related Abnormality124
- Thermistor or Related Abnormality (Indoor Unit)126
- Signal Transmission Error (between Indoor and Outdoor Unit)127
- Unspecified Voltage (between Indoor and Outdoor Units)128
- Outdoor Unit PCB Abnormality129
- OL Activation (Compressor Overload)130
- Compressor Lock131
- DC Fan Lock132
- Input over Current Detection133
- Four Way Valve Abnormality134
- Discharge Pipe Temperature Control136
- High Pressure Control in Cooling137
- Compressor System Sensor Abnormality139
- Position Sensor Abnormality140
- DC Voltage / Current Sensor Abnormality141
- Thermistor or Related Abnormality (Outdoor Unit)142
- Electrical Box Temperature Rise144
- Radiation Fin Temperature Rise146
- Output over Current Detection148
- Insufficient Gas150
- Over-Voltage Detection152
Check153
- How to Check153
- Fan Motor Connector Output Check153
- Electronic Expansion Valve Check153
- Four Way Valve Performance Check154
- Thermistor Resistance Check155
- Installation Condition Check156
- Discharge Pressure Check156
- Outdoor Unit Fan System Check157
- Power Supply Waveforms Check157
- Power Transistor Check158
Part 7 Removal Procedure160
Indoor Unit161
- Removal of Air Filter161
- Removal of Front Panel163
- Removal of Front Grille165
- Removal of Horizontal Blades and Vertical Blades168
- Removal of Electrical Box171
- Removal of PCB174
- Removal of Drain Pan Unit180
- Removal of Fan Motor184
- Removal of Heat Exchanger186
- Removal of Fan Rotor189
Outdoor Unit192
- Removal of Panels and Fan Motor192
- Removal of Electrical Box199
- Removal of Reactor and Partition Plate201
- Removal of Sound Blanket203
- Removal of Four Way Valve205
- Removal of Compressor207
- Removal of PCB209
Part 8 Others212
Others213
- Test Run from the Remote Controller213
- Jumper Settings214
Part 9 Appendix216
Piping Diagrams217
- Indoor Units217
- Outdoor Units218
Wiring Diagrams220
- Indoor Units220
- Outdoor Units220
Index222
Drawings & Flow Charts226

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