Introduction
This manual provides instructions for the YAOHUIMI Replacement Remote Control, model A420210928-(R51)-323. This remote is designed to operate HTW Alhafidh Midea RG66A1(B)/BGEF room window air conditioners. Please read this manual carefully before use to ensure proper operation and to maximize the lifespan of your remote control.
Important Note: This is a dedicated replacement remote control, not a universal remote. Verify your air conditioner model (HTW Alhafidh Midea RG66A1(B)/BGEF) or your original remote control model for compatibility before use.

Image: Front view of the YAOHUIMI Replacement Remote Control, showing its buttons and display.
Setup and Battery Installation
To begin using your replacement remote control, follow these simple steps for battery installation:
- Open the Battery Compartment: Locate the battery compartment cover on the back of the remote control. Slide the cover downwards or press the latch (if present) to open it.
- Insert Batteries: Insert two new AAA batteries (not included) into the compartment. Ensure the positive (+) and negative (-) terminals of the batteries match the markings inside the compartment.
- Close the Compartment: Slide the battery compartment cover back into place until it clicks securely.
- Test Operation: Point the remote control towards your air conditioner and press the ON/OFF button. The air conditioner should respond.

Image: A hand holding the remote control, demonstrating typical usage.
Operating Instructions
This remote control features a clear display and intuitive buttons for managing your air conditioner's functions.
Key Functions:
- ON/OFF Button: Press to turn the air conditioner on or off.
- MODE Button: Cycles through operating modes: AUTO, COOL, DRY, HEAT.
- TEMP Buttons (▲/▼): Adjusts the desired temperature setting.
- FAN SPEED Button: Selects fan speed: HIGH, MED (Medium), LOW.
- SWING Button: Activates or deactivates the air swing function.
- SLEEP Button: Engages the sleep mode for comfortable night operation.
- TIMER ON/TIMER OFF Buttons: Sets the timer for automatic power on or off.
- RESET LOCK Button: Used for specific reset functions (refer to your AC unit's manual if needed).
- LED DISPLAY Button: Toggles the display light on the air conditioner unit.
- TURBO Button: Activates rapid cooling or heating.
- AIR DIRECTION Button: Adjusts the direction of the airflow.
Display Features:
The remote control features a clear display with a green backlight for visibility in low-light conditions. It can display temperature in both Fahrenheit (°F) and Celsius (°C).

Image: Close-up of the remote control's display, highlighting the green backlight and fan speed indicators.

Image: Illustration showing the remote's capability to display temperature in both Fahrenheit (°F) and Celsius (°C).
Maintenance
- Battery Replacement: Replace batteries when the remote's range decreases or the display becomes dim. Always replace both batteries simultaneously with new AAA batteries. Do not mix old and new batteries, or different types of batteries.
- Cleaning: Wipe the remote control with a soft, dry cloth. Do not use liquid cleaners, sprays, or abrasive materials, as these can damage the remote's surface or internal components.
- Storage: If the remote control will not be used for an extended period, remove the batteries to prevent leakage and potential damage. Store the remote in a cool, dry place away from direct sunlight.
Troubleshooting
- Remote not responding:
- Check if the batteries are inserted correctly with the correct polarity.
- Replace old batteries with new ones.
- Ensure there are no obstructions between the remote control and the air conditioner's receiver.
- Make sure you are within the effective operating range of the air conditioner.
- Display is dim or blank:
- Replace the batteries.
- Ensure the remote has not been exposed to extreme temperatures.
- Air conditioner not responding to specific functions:
- Verify that the air conditioner unit supports the specific function you are trying to use.
- Ensure the remote is pointed directly at the air conditioner.
Specifications
| Model Number | A420210928-(R51)-323 |
| Brand | YAOHUIMI |
| Compatible Devices | HTW Alhafidh Midea RG66A1(B)/BGEF Room Window Air Conditioner |
| Connectivity Technology | Infrared |
| Power Source | 2 x AAA Batteries (not included) |
| Special Feature | Green Backlight, Fahrenheit/Celsius Display |
Warranty and Support
For warranty information or technical support regarding your YAOHUIMI Replacement Remote Control, please contact the seller or retailer from whom you purchased the product. They can provide assistance with product-specific inquiries, returns, or replacements.
Please retain your purchase receipt as proof of purchase for any warranty claims.





