Daikin FTYN25DV3B ATY20DV2 - Page 79

Daikin FTYN25DV3B ATY20DV2

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Check SiBE01-503

70 Service Diagnosis

Table of Contents

Table of Contents3
Introduction6
- Safety Cautions6
Part 1 List of Function10
Functions11
Part 2 Specifications14
Specifications15
Part 3 Printed Circuit Board Connector Wiring Diagram18
Printed Circuit Board Connector Wiring Diagram19
- Indoor Unit19
  - Control Pcb20
  - Signal Receiver Pcb20
Part 4 Functions and Control22
Functions23
- Power-Airflow Dual Flaps, Wide-Angle Louvers and Auto-Swing23
- Fan Speed Control for Indoor Units24
- Thermostat Control25
- Automatic Operation26
- Programme Dry Function27
- Night Set Mode28
- POWERFUL Operation29
- Other Functions30
Function of Thermistor31
Control Specification32
- Four Way Valve Switching32
- 3-Minutes Standby32
- Compressor Protection Function32
- Fan off Delay32
- Freeze-Up Protection Control32
- Heating Peak-Cut Control33
- Liquid Compression Protection Function33
- Defrost Control34
Part 5 System Configuration36
System Configuration37
Instructions38
- Safety Precautions38
  - Installation Site39
  - Electrical Work39
- Names of Parts40
  - Outdoor Unit41
  - Remote Controller42
- Preparation before Operation43
- AUTO • DRY • COOL • HEAT • FAN Operation46
  - Operation Mode47
  - Swing Setting47
- Adjusting the Air Flow Direction48
- POWERFUL Operation49
- TIMER Operation50
  - To Use on Timer Operation51
  - To Combine on Timer and off Timer51
- Care and Cleaning52
  - Air Filter53
  - Before a Long Idle Period54
- Troubleshooting55
Part 6 Service Diagnosis60
Caution for Diagnosis61
Problem Symptoms and Measures62
Service Check Function63
Troubleshooting66
- Error Codes and Description66
- Indoor Unit PCB Abnormality67
- Freeze-Up Protection Control or High Pressure Control68
- Fan Motor or Related Abnormality (AC Motor)70
- Thermistor or Related Abnormality (Indoor Unit)71
- High Pressure Control in Cooling72
- Thermistor or Related Abnormality (Outdoor Unit)74
Check76
- Thermistor Resistance Check76
- Installation Condition Check77
- Outdoor Unit Fan System Check78
- Hall IC Check78
Part 7 Removal Procedure80
Indoor Unit81
- Removal of Air Filter81
- Removal of Front Grille84
- Removal of Horizontal Blades / Vertical Blades87
- Removal of Electrical Parts Box / PCB / Swing Motor89
- Removal of Heat Exchanger95
- Install of Drain Plug98
- Removal of Fan Rotor / Fan Motor99
Outdoor Unit103
- Removal of Panels103
- Removal of Bellmouth and Left Side Plate105
- Removal of Electrical Device Mounting Plate106
- Removal of Propeller Fan and Fan Motor107
- Removal of Sound Blanket108
- Removal of Partition Plate110
- Removal of Compressor112
Part 8 Others114
Others115
- Trial Operation and Testing115
- Pump down Operation115
- Jumper Settings116
Part 9 Appendix118
Piping Diagrams119
- Indoor Units119
- Outdoor Units121
Wiring Diagrams123
- Indoor Units123
- Outdoor Units123

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