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Daikin D-Series - User Manual

Daikin D-Series
479 pages
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Si18 - 525B
[Applied Models]
Super Multi Plus : Cooling only
Super Multi Plus : Heat Pump
D-Series

Table of Contents

Questions and Answers

  • J
    Jeffrey LongSep 12, 2025
    Why did my Daikin D-Series Air Conditioner stop suddenly with the OPERATION lamp on?
    • B
      Benjamin AllenSep 12, 2025
      The air conditioner might stop operating due to a sudden large voltage fluctuation, as a system protection measure. It will automatically resume operation in about 3 minutes.
  • J
    Jessica MosleyAug 25, 2025
    What to do if my Daikin D-Series Air Conditioner operation stopped suddenly?
    • S
      Scott WilsonAug 25, 2025
      If your Daikin Air Conditioner stops suddenly and the OPERATION lamp is on, it might be due to a large voltage fluctuation, which triggers system protection. The unit will automatically resume operation in about 3 minutes.
  • C
    Cynthia HansonAug 25, 2025
    Why is my Daikin D-Series Air Conditioner outdoor unit leaking water?
    • M
      Mark HowardAug 26, 2025
      The water or steam emitted from the outdoor unit of your Daikin Air Conditioner is due to moisture in the air condensing on the cool surface of the outdoor unit's piping, which then drips as water.
  • R
    rchambersSep 23, 2025
    Why does Daikin Ventilation operation does not start soon?
    • M
      Misty RodriguezSep 23, 2025
      If the Daikin Ventilation operation does not start soon, it could be due to these reasons: * When the ON/OFF button was pressed soon after operation was stopped: You should wait for about 3 minutes. * When the mode was reselected: You should wait for about 3 minutes.
  • K
    Kent PearsonSep 12, 2025
    Why does my Daikin D-Series Air Conditioner not start right away?
    • S
      Sandra WhiteSep 12, 2025
      If your Daikin Air Conditioner doesn't start immediately after pressing the ON/OFF button soon after stopping it or reselecting the mode, this is normal. You should wait approximately 3 minutes for the system to restart.
  • H
    Holly JohnsonSep 17, 2025
    What to do if the Daikin Ventilation operation stopped suddenly, but the OPERATION lamp is on?
    • A
      Anthony SmithSep 17, 2025
      If the Daikin Ventilation operation stops suddenly and the OPERATION lamp is on, it may be due to a large voltage fluctuation. For system protection, the air conditioner might stop. It will automatically resume operation in about 3 minutes.
  • M
    Michelle LloydSep 4, 2025
    Why do mists come out of the indoor unit of my Daikin D-Series?
    • A
      allenjosephSep 5, 2025
      This happens when the air in the room is cooled into mist by the cold air flow during cooling operation.
  • J
    Justin GibsonSep 5, 2025
    How to handle odour from the indoor unit of my Daikin Air Conditioner?
    • K
      Kenneth GonzalezSep 5, 2025
      If this happens, we recommend you have the indoor unit washed by a technician. Consult the service shop where you bought the air conditioner.
  • Y
    youngkimberlySep 18, 2025
    Why does my Daikin Ventilation indoor unit give out odour?
    • L
      Lindsey GilbertSep 18, 2025
      If your Daikin Ventilation unit gives out an odor, it's likely that smells from the room, furniture, or cigarettes have been absorbed into the unit and are being discharged with the airflow. It is recommended to have the indoor unit washed by a technician. Consult the service shop where you bought the air conditioner.
  • R
    Rachael SimsAug 30, 2025
    Why my Daikin D-Series Air Conditioner operation does not start immediately?
    • M
      Melissa JordanAug 30, 2025
      If the ON/OFF button was pressed soon after the operation was stopped, or when the mode was reselected, you should wait for about 3 minutes.

Summary

Part 2 Specifications

1. Specifications

Technical specifications for various models, including cooling and heating capacities.

1.1 Cooling Only

Detailed technical specifications for models in cooling-only mode.

1.2 Heat Pump

Detailed technical specifications for models in heat pump mode.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

Illustrates the wiring connections for PCBs in different unit types.

1.1 Outdoor Unit

Wiring diagrams for the outdoor unit's control and inverter PCBs.

1.1.1 Control PCB (A1 P)

Lists connectors and their functions on the outdoor unit's control PCB.

Part 4 Refrigerant Circuit

Part 6 Test Operation

Part 8 Troubleshooting

1. Caution for Diagnosis

Important precautions and guidelines for diagnosing issues.

1.1 Troubleshooting with Operation Lamp

How to troubleshoot based on the status of the operation lamp.

1.2 Troubleshooting with the LED on the SkyAir Indoor Unit

Troubleshooting guide for LEDs on SkyAir indoor units.

1.3 Troubleshooting with the LED on the Outdoor Unit

Troubleshooting guide for LEDs on the outdoor unit.

1.4 Troubleshooting with the LED on the BP Unit

Troubleshooting guide for LEDs on the BP unit.

Daikin D-Series Specifications

General IconGeneral
HSPF RatingUp to 10.0
Cooling Capacity9, 000 - 36, 000 BTU/h
Heating Capacity9, 000 - 36, 000 BTU/h
Energy Efficiency Ratio (EER)Up to 12.5
Sound Level19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Noise Level19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Power Supply208/230V, 1-phase, 60Hz

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