Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Hitachi RAU514HUD Ace Cutout Split AC. Please read this manual thoroughly before using the appliance and retain it for future reference.

Image: Front view of the Hitachi RAU514HUD Ace Cutout Split AC indoor unit, showing the display panel and air outlet.
Safety Information
Always follow basic safety precautions to reduce the risk of fire, electric shock, or injury.
- Ensure the AC is installed by a qualified technician.
- Do not insert fingers or objects into the air inlet/outlet.
- Do not operate the AC with wet hands.
- Disconnect power before cleaning or maintenance.
- Keep children away from the unit.
- Do not attempt to repair the unit yourself. Contact authorized service personnel.
Setup and Installation
Proper installation is crucial for optimal performance and safety. This section outlines general setup guidelines. For detailed installation instructions, refer to the separate installation manual provided with the product or consult a qualified technician.
Unpacking
- Carefully remove the indoor and outdoor units from their packaging.
- Check for any damage during transit. Report any damage to your dealer immediately.
- Ensure all included components are present: 1 Main unit, Warranty card.
Location Selection
- Indoor Unit: Choose a location where airflow is not obstructed and cool air can circulate evenly throughout the room. Avoid direct sunlight.
- Outdoor Unit: Select a well-ventilated area, away from direct sunlight or heat sources. Ensure sufficient space around the unit for maintenance.
Electrical Connection
The unit requires a 230 Volts power supply. Ensure the electrical circuit is dedicated and properly grounded, meeting local electrical codes. Do not use extension cords.

Image: Angled view of the Hitachi RAU514HUD Ace Cutout Split AC indoor unit, highlighting its compact design.
Operating Instructions
Your Hitachi RAU514HUD AC is equipped with various features for comfortable and efficient cooling. All functions are controlled via the remote control.
Remote Control Functions
The remote control allows you to adjust settings such as mode, temperature, fan speed, and timer. Refer to the remote control guide for specific button functions.
Operating Modes
- Cool Mode: Provides cooling by lowering the room temperature. Adjust the temperature setting to your preference.
- Dry Mode: Reduces humidity in the room without significant cooling.
- Auto Mode (Auto Climate Technology): The AC automatically selects the appropriate operating mode (Cool, Dry) and fan speed based on the room temperature and humidity.
- Fan Mode: Circulates air without cooling or heating.
Special Features
- Auto Fan Speed: The fan speed adjusts automatically to maintain the desired temperature.
- Auto Humid Control: Automatically manages humidity levels for enhanced comfort.
- Auto Power Save Mode: Optimizes operation to reduce energy consumption.
- Auto Restart: In case of a power outage, the unit restarts automatically with the previous settings once power is restored.
- Digilock: A feature for locking the remote control settings to prevent accidental changes.
- Filter Clean Indicator: Illuminates to remind you when it's time to clean the air filters.
- Kaimin (Sleep Mode): Adjusts temperature and fan speed for comfortable sleep and energy saving.
- My Mode: Allows you to save and recall your preferred operating settings.
- On/Off Timer with Advanced Start-up: Program the AC to turn on or off at specific times. Advanced start-up ensures the room reaches the desired temperature by the set time.
- Powerful Mode: Provides rapid cooling for a short period to quickly reach the desired temperature.
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your AC unit. Always disconnect power before performing any maintenance.
Cleaning the Air Filters
- Open the front panel of the indoor unit.
- Remove the air filters.
- Clean the filters using a vacuum cleaner or wash them with lukewarm water and a mild detergent.
- Rinse thoroughly and allow them to dry completely in a shaded area before re-installing.
- The "Filter Clean Indicator" will remind you when cleaning is due.
Cleaning the Unit Surfaces
- Wipe the indoor unit with a soft, dry cloth. For stubborn dirt, use a damp cloth with a mild detergent, then wipe dry.
- Do not use harsh chemicals, abrasive cleaners, or solvents.
Seasonal Maintenance
- Before Summer: Ensure the outdoor unit's coils are free from dust and debris. Check for any obstructions around the unit.
- Before Winter (if applicable for heating models, though this is a cooling-only model): For cooling-only models, ensure the unit is clean and covered if not in use for extended periods.

Image: Side view of the Hitachi RAU514HUD Ace Cutout Split AC indoor unit, showing the air intake area.
Troubleshooting
Before contacting service, review the following common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| AC does not start | No power supply; Remote control batteries dead; Timer function active. | Check power connection and circuit breaker; Replace remote control batteries; Deactivate timer. |
| Insufficient cooling | Dirty air filters; Blocked outdoor unit; Doors/windows open; Temperature setting too high. | Clean air filters; Clear obstructions from outdoor unit; Close doors/windows; Lower temperature setting. |
| Unusual noise | Loose parts; Unit not level; Foreign object inside. | Contact service for inspection. |
| Water leakage from indoor unit | Clogged drain pipe; Improper installation. | Contact service for inspection and repair. |
If the problem persists after attempting these solutions, please contact authorized Hitachi service personnel.
Product Specifications
| Feature | Specification |
|---|---|
| Brand | Hitachi |
| Model | RAU514HUD |
| Type | Split System Air Conditioner |
| Capacity | 1.2 Tons |
| Energy Efficiency Rating | 5 Star |
| Annual Energy Consumption | 100 Kilowatt Hours |
| Noise Level | 43 Decibels |
| Voltage | 230 Volts |
| Wattage | 1065 Watts |
| Cooling Power | 4050 Watts |
| Special Features | Anti Bacterial Filter, Auto Climate Technology, Auto Fan Speed, Auto Humid Control, Auto Power Save Mode, Auto Restart, Cool Mode, Digilock, Dry Mode, Filter Clean Indicator, Kaimin, Low Derating, Lower Pull Down Time, My Mode, On or Off Timer with Advanced Start-up, Powerful Mode, Precoated Aluminum Fins |
| Material | Plastic |
| Included Components | 1 Main unit, Warranty card |
| Item Weight | 47 kg 200 g |
| Item Dimensions (LxWxH) | 22 x 83 x 29 Centimeters |
Warranty and Support
Your Hitachi RAU514HUD Ace Cutout Split AC comes with the following warranty:
- Product Warranty: 1 year from the date of purchase.
- Compressor Warranty: 5 years from the date of purchase.
For warranty claims, technical support, or service requests, please refer to the contact information provided on your warranty card or visit the official Hitachi India website. Ensure you have your purchase receipt and product model number (RAU514HUD) ready when contacting support.