Daikin RYN25DV3B ARY20DV2 User Manual

128 pages

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SiBE01

503

SPLIT Pair

D-Series

[Applied Models]

zNon-Inverter Pair : Heat Pump

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

Questions and Answers:

K
Katie SotoAug 8, 2025
What to do if my Daikin RYN25DV3B ARY20DV2 operation stops suddenly and the OPERATION lamp flashes?
- R
  reynoldswendyAug 8, 2025
  If your Daikin Air Conditioner stops suddenly and the OPERATION lamp flashes, clean the air filters or remove any obstructions. Then, turn the breaker OFF, and then turn it back ON. Try operating the air conditioner again using the remote controller.
M
Mary SawyerAug 17, 2025
How to fix Daikin RYN25DV3B ARY20DV2 Air Conditioner indoor unit gives out odour?
- R
  Roy BushAug 17, 2025
  If the indoor unit of your Daikin Air Conditioner emits an odor, it is recommended to have the indoor unit cleaned by a qualified technician.