Daikin FTXS20K2V1B

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SiBE041134 Outdoor Unit

Removal Procedure 145

Release the discharge

pipe thermistor.

 Be careful not to lose the clip

for the thermistor.

Lift and remove the

electrical box.

Step

Procedure Points

Discharge pipe thermistor

(R11849)

(R12279)

Clip

(R11852)

Electrical Box

Main Page

Table of Contents3
Introduction6
- Safety Cautions6
- Used Icons10
Part 1 List of Functions11
Functions12
Part 2 Specifications13
Specifications14
Part 3 Printed Circuit Board Connector Wiring Diagram15
Indoor Unit16
Outdoor Unit18
Part 4 Function and Control20
Main Functions21
- Temperature Control21
- Frequency Principle21
- Airflow Direction Control23
- Fan Speed Control for Indoor Unit24
- Program Dry Operation25
- Automatic Operation26
- Thermostat Control27
- NIGHT SET Mode28
- ECONO Operation29
- INTELLIGENT EYE Operation30
- Inverter POWERFUL Operation31
- Other Functions32
Function of Thermistor33
Control Specification34
- Mode Hierarchy34
- Frequency Control35
- Controls at Mode Changing / Start-Up37
- Discharge Pipe Temperature Control38
- Input Current Control39
- Freeze-Up Protection Control40
- Heating Peak-Cut Control40
- Outdoor Fan Control41
- Liquid Compression Protection Function41
- Defrost Control42
- Electronic Expansion Valve Control43
- Pressure Equalizing Control44
- Malfunctions46
Part 5 Operation Manual47
System Configuration48
Operation Manual49
- Remote Controller49
  - Quiet Button50
  - Clock Button50
- AUTO · DRY · COOL · HEAT · FAN Operation51
- Operating Conditions52
- Adjusting the Airflow Direction and Rate53
- COMFORT AIRFLOW Operation55
- INTELLIGENT EYE Operation56
- POWERFUL Operation58
- OUTDOOR UNIT QUIET Operation59
- ECONO Operation60
- OFF TIMER Operation61
- ON TIMER Operation62
- WEEKLY TIMER Operation63
- Copy Mode66
Part 6 Service Diagnosis69
Troubleshooting with LED70
- Indoor Unit70
- Outdoor Unit70
Problem Symptoms and Measures71
Service Check Function72
Troubleshooting75
- Error Codes and Description75
- Indoor Unit PCB Abnormality76
- Freeze-Up Protection Control or Heating Peak-Cut Control78
- Fan Motor (DC Motor) or Related Abnormality80
- Thermistor or Related Abnormality (Indoor Unit)82
- Refrigerant Shortage83
- Low-Voltage Detection or Over-Voltage Detection85
- Signal Transmission Error (between Indoor Unit and Outdoor Unit)87
- Unspecified Voltage (between Indoor Unit and Outdoor Unit)89
- Outdoor Unit PCB Abnormality90
- OL Activation (Compressor Overload)91
- Compressor Lock92
- DC Fan Lock93
- Input Overcurrent Detection94
- Four Way Valve Abnormality95
- Discharge Pipe Temperature Control97
- High Pressure Control in Cooling98
- Compressor System Sensor Abnormality99
- Position Sensor Abnormality100
- DC Voltage / Current Sensor Abnormality102
- Thermistor or Related Abnormality (Outdoor Unit)103
- Electrical Box Temperature Rise105
- Radiation Fin Temperature Rise107
- Output Overcurrent Detection109
Check111
- Thermistor Resistance Check111
- Fan Motor Connector Output Check112
- Power Supply Waveforms Check112
- Electronic Expansion Valve Check113
- Four Way Valve Performance Check114
- Inverter Units Refrigerant System Check114
- Inverter Checker" Check115
- Rotation Pulse Check on the Outdoor Unit PCB116
- Installation Condition Check117
- Discharge Pressure Check117
- Outdoor Fan System Check118
- Main Circuit Short Check118
- Power Module Check119
Part 7 Removal Procedure120
Indoor Unit121
- Removal of Air Filters121
- Removal of Horizontal Blade123
- Removal of Front Panel125
- Removal of Front Grille126
- Removal of Vertical Blade Assys127
- Removal of Electrical Box129
- Removal of Swing Motor / Pcbs132
- Removal of Indoor Heat Exchanger137
- Removal of Fan Rotor / Fan Motor140
- Exchange of Piping Direction (Drain Hose)143
Outdoor Unit144
- Removal of Outer Panels / Fan Motor144
- Removal of Electrical Box153
- Removal of Pcbs156
- Removal of Reactor / Partition Plate164
- Removal of Sound Blankets166
- Removal of Four Way Valve168
- Removal of Compressor171
Part 8 Trial Operation and Field Settings173
Pump down Operation174
Forced Cooling Operation175
Trial Operation176
Field Settings177
- Model Type Setting177
- When 2 Units Are Installed in 1 Room177
- Standby Electricity Saving178
- Facility Setting Jumper (Cooling at Low Outdoor Temperature)178
- Jumper Settings179
Application of Silicon Grease to a Power Transistor and a Diode Bridge180
Part 9 Appendix181
Piping Diagrams182
- Indoor Unit182
- Outdoor Unit182
Wiring Diagrams183
- Indoor Unit183
- Outdoor Unit183

Daikin FTXS20K2V1B - Page 155

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