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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

  • S
    Sheri RyanAug 31, 2025
    Why doesn't hot air flow out immediately from my Daikin D-Series Air Conditioner after starting the heating operation?
    • P
      Patricia HollowayAug 31, 2025
      The air conditioner is warming up. You should wait for 1 to 4 minutes.
  • 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.
  • 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.
  • L
    Linda GrahamSep 13, 2025
    What to do if an abnormality (such as a burning smell) occurs in Daikin Inverter?
    • R
      Reginald Nelson MDSep 13, 2025
      If you notice an abnormality, such as a burning smell, stop the Daikin Inverter operation immediately and turn the breaker OFF.
  • J
    Jeffery SchultzSep 12, 2025
    Why is the Daikin D-Series Air Conditioner outdoor fan running when it's off?
    • C
      Christopher LamSep 13, 2025
      The outdoor fan in your Daikin Air Conditioner may continue rotating for about 60 seconds after operation stops to protect the system. Additionally, if the outdoor temperature is very high, the fan might start rotating even when the air conditioner is not in operation, also for system protection.
  • 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.
  • 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.
  • T
    Thomas CookAug 27, 2025
    Why hot air does not flow out soon after the start of heating operation of Daikin Inverter?
    • D
      danielmartinezAug 27, 2025
      You should wait for 1 to 4 minutes after starting the heating operation of your Daikin Inverter.
  • M
    Monica PittsAug 26, 2025
    What to do if my Daikin Inverter operation stops suddenly and the OPERATION lamp flashes?
    • W
      wagnercarlaAug 26, 2025
      If the Daikin Inverter stops suddenly and the OPERATION lamp is flashing, clean the air filters or remove any obstacles. After that, turn the breaker OFF, then turn it ON again, and try operating the air conditioner with the remote controller.
  • 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.

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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