Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your HCDZ replacement remote control. This remote is designed to be compatible with various Westinghouse Wall Mounted Type Inverter Air Conditioner models, including WHS36WMA21S, WHS18WMA21S, WHS09WMA21S, WHS09WMA11S, WHS24WMA21S, and WHS30WMA21S. Please read these instructions carefully to ensure optimal performance and longevity of your remote control.
Setup
Battery Installation
The HCDZ replacement remote control requires two AAA batteries (not included). No programming is needed; the remote will function immediately once fresh batteries are inserted.
- Locate the battery compartment on the back of the remote control.
- Slide the battery compartment cover downwards to open it.
- Insert two new AAA batteries, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Slide the battery compartment cover back into place until it clicks securely.

Image: Back of the remote control with the battery cover removed, revealing the battery slots.
Operating Instructions
This remote control is designed for straightforward use with your compatible Westinghouse air conditioner. It operates via infrared (IR) technology.
Basic Operation
- Point and Press: Aim the remote control directly at the infrared sensor on your air conditioner unit.
- Button Control: All functions are controlled via the buttons on the remote. Refer to the button labels for specific actions (e.g., Power, Mode, Temperature Up/Down, Fan Speed).
- Range: The remote has a maximum operating range of 8 meters (approximately 26 feet). Ensure no obstructions are between the remote and the air conditioner unit.
Important Note on Temperature Display
Please be aware that this replacement remote control displays temperature readings exclusively in Celsius. It does not support switching to Fahrenheit.

Image: Front view of the HCDZ replacement remote control.
Maintenance
Proper care will extend the life of your remote control.
- Storage: Do not leave the remote in an extremely hot or humid environment. Excessive heat or moisture can damage internal components.
- Battery Care: Avoid mixing new and old batteries. If the remote will not be used for an extended period, remove the batteries to prevent potential damage from leakage and corrosion.
- Cleaning: Use a soft, dry cloth to clean the remote control. Do not use liquid cleaners or abrasive materials.
Troubleshooting
If you experience issues with your remote control, try the following steps:
- Remote Control Malfunctions: If the remote is unresponsive, proceed to the next steps.
- Replace Batteries: The most common cause of remote control issues is depleted batteries. Replace the old batteries with fresh AAA batteries.
- Check Battery Terminals: Ensure the battery terminals inside the compartment are clean and that the batteries are inserted with correct polarity.
- Remote Out of Range: Move closer to your air conditioner unit. The maximum effective range is 8 meters.
- Remove Obstructions: Ensure there are no physical objects blocking the line of sight between the remote control and the IR sensor on your air conditioner.
- Air Conditioner Power: Verify that the power cord to your air conditioner is securely plugged in and the unit is turned on.
Specifications
| Brand | HCDZ |
| Compatible Devices | Westinghouse Wall Mounted Type Inverter Air Conditioners (Models: WHS36WMA21S, WHS18WMA21S, WHS09WMA21S, WHS09WMA11S, WHS24WMA21S, WHS30WMA21S) |
| Connectivity Technology | Infrared (IR) |
| Maximum Range | 8 Meters |
| Controller Type | Button Control |
| Special Feature | No programming needed |
| Temperature Display | Celsius only |
| Color | Black |
| Battery Type | 2 x AAA batteries (not included) |
Warranty Information
This HCDZ replacement remote control comes with a 3-month warranty from the date of purchase. Please retain your proof of purchase for any warranty claims. The warranty covers manufacturing defects but does not cover damage caused by misuse, accidents, or unauthorized modifications.
Support
For further assistance or inquiries regarding your HCDZ replacement remote control, please refer to the seller's contact information on the platform where the product was purchased. Ensure you have your product model and purchase details ready when contacting support.