Introduction
This manual provides comprehensive instructions for the proper setup, operation, and maintenance of your replacement remote control for Daikin air conditioning units. Please read this manual thoroughly before using the remote control to ensure optimal performance and longevity.
Product Overview
Remote Control Layout

Image: Front view of the Daikin air conditioner remote control, showing the LCD screen and various control buttons including ON/OFF, FAN, POWERFUL, and TEMP F/C.
Key Features
- Designed for Daikin air conditioning units, compatible with models ARC452A8, ARC452A12, ARC452A13, ARC452A14, ARC452A15, ARC452A16, ARC452A17, ARC452A18, ARC452A19, ARC452A20, ARC452A21.
- Displays temperature exclusively in Celsius.
- Includes essential functions such as ON/OFF, Fan speed control, Powerful mode, and Temperature adjustment.
- Ergonomic design for comfortable handling.
Product Demonstration Video
Video: A demonstration of the Daikin air conditioner remote control, showcasing its buttons, LCD display, and battery compartment. The video illustrates how to operate basic functions and replace batteries.
Setup
Battery Installation

Image: The rear view of the remote control with the battery cover removed, showing the empty battery compartment designed for two AAA batteries.
- Locate the battery compartment on the back of the remote control.
- Slide the battery cover downwards to open it.
- Insert two (2) AAA alkaline batteries, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Close the battery cover by sliding it back into place until it clicks securely.
- Important: Always replace both batteries with new ones of the same type simultaneously. If the remote will not be used for an extended period, remove the batteries to prevent leakage and damage.
Operating Instructions
Point the remote control directly at the indoor unit of your Daikin air conditioner when operating.
Basic Functions
- ON/OFF Button: Press this button to turn the air conditioner ON or OFF.
- TEMP ▲/▼ Buttons: Use these buttons to adjust the desired temperature. The display shows temperature in Celsius only.
Fan Control
- FAN Button: Press this button to cycle through available fan speed settings (e.g., Auto, Low, Medium, High).
Powerful Mode
- POWERFUL Button: Activates the powerful operation mode for rapid cooling or heating. Press again to deactivate.
Other Modes (Under Sliding Cover)
Slide down the front cover of the remote to access additional functions:
- MODE Button: Cycles through operation modes such as Cool, Heat, Dry, Fan, Auto.
- ECONO Button: Activates economy mode for energy-saving operation.
- COMFORT Button: Engages comfort airflow mode.
- SWING Button: Controls the vertical airflow direction (louver swing).
Timer Function (Under Sliding Cover)
The timer function allows you to set the air conditioner to turn ON or OFF automatically after a set period.
- Press the ON or OFF button in the TIMER section to select the desired timer type.
- Use the SELECT ▲/▼ buttons to adjust the time setting.
- Press the SELECT button to confirm the timer setting.
- To cancel a set timer, press the CANCEL button.
Maintenance
- Cleaning: Wipe the remote control with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Battery Replacement: Replace batteries as described in the "Battery Installation" section when the display becomes dim or the remote control's range decreases.
- Storage: If not using the remote for an extended period, remove the batteries to prevent corrosion. Store in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Remote control does not operate the AC unit. |
|
|
| LCD display is dim or blank. | Low battery power. | Replace batteries. |
| Temperature displays only in Celsius. | This model is designed for Celsius display only. | No action required; this is normal operation for this remote. |
Specifications
- Compatible Devices: Daikin Air Conditioners (Models: ARC452A8, ARC452A12, ARC452A13, ARC452A14, ARC452A15, ARC452A16, ARC452A17, ARC452A18, ARC452A19, ARC452A20, ARC452A21)
- Item Model Number: 4521
- Power Source: 2 x AAA Alkaline Batteries (included)
- Connectivity Technology: Infrared (IR)
- Temperature Display: Celsius only
- Special Feature: Ergonomic design
- Max Number of Supported Devices: 1
- Package Dimensions: 7.09 x 1.97 x 1.18 inches
- Item Weight: 3.88 ounces
- Manufacturer: Remote Control
Warranty and Support
This remote control is a replacement unit. For specific warranty information, please refer to the documentation provided with your purchase or contact the seller directly. For technical support regarding your Daikin air conditioning unit, please consult your original Daikin product manual or Daikin's official support channels.





