Hitachi 1 Ton 3 Star Xpandable+ Inverter Split AC (RAS.D312PCBIBS) User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Hitachi 1 Ton 3 Star Xpandable+ Inverter Split Air Conditioner, model RAS.D312PCBIBS. Please read this manual thoroughly before using your air conditioner and retain it for future reference.

2. Safety Information

Always follow basic safety precautions to reduce the risk of fire, electric shock, or injury. This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

• Ensure the air conditioner is installed by a qualified technician.
• Do not insert fingers or objects into the air inlet/outlet.
• Do not operate the air conditioner with wet hands.
• Turn off the power supply before cleaning or performing maintenance.
• Keep the remote control out of reach of small children.
• In case of abnormal operation (e.g., burning smell), immediately turn off the power and contact customer service.

Figure 2.1: SafeGuard System Features
This image highlights the safety features integrated into the Hitachi AC, including fire prevention, overload safety protection, precise compressor control, flexible installation options, and overall reliability.

3. Setup and Installation

The installation of this split air conditioner requires specialized tools and knowledge. It is strongly recommended that installation be performed by a certified Hitachi service technician to ensure proper functioning and to validate your warranty.

3.1 Unpacking and Included Components

Carefully unpack all components and check against the packing list:

• 1 x Indoor Unit (IDU)
• 1 x Outdoor Unit (ODU)
• 1 x Remote Control
• 2 x AAA Batteries (for remote)
• 1 x Inter Connecting Copper Pipe (3m length)
• 1 x Drain Pipe
• User Manual (this document)

Figure 3.1: Indoor and Outdoor Unit Dimensions
This image displays the indoor unit (IDU) and outdoor unit (ODU) of the Hitachi AC, along with their respective dimensions and an energy efficiency guide.

3.2 Installation Guidelines (Professional Installation Required)

Your Hitachi AC must be installed by an authorized service professional. Key considerations for installation include:

• Location: Choose a location for the indoor unit that allows for even air distribution and is away from direct sunlight or heat sources. The outdoor unit should be placed in a well-ventilated area, away from obstructions.
• Mounting: Securely mount both indoor and outdoor units according to manufacturer specifications.
• Piping: Connect the copper refrigerant pipes and drain pipe between the indoor and outdoor units. Ensure proper insulation and leak-free connections.
• Electrical Connection: Connect the unit to a dedicated power supply with appropriate voltage (230 Volts) and circuit protection.
• Vacuuming and Refrigerant Charging: The system must be properly vacuumed to remove moisture and air, then charged with the correct amount of R32 refrigerant.

4. Operating Instructions

Your Hitachi AC is designed for user-friendly operation via the remote control. Familiarize yourself with the remote's functions for optimal comfort.

4.1 Remote Control Overview

The remote control allows you to adjust settings such as mode, temperature, fan speed, and special features.

Figure 4.1: Remote Control
This image displays the remote control for the Hitachi AC, highlighting its buttons for mode selection, temperature adjustment, fan speed, and special functions.

4.2 Basic Operation

• Power ON/OFF: Press the ON/OFF button to start or stop the unit.
• Mode Selection: Press the MODE button to cycle through available modes: Cool, Fan, Dry, and Auto.
• Temperature Adjustment: Use the Temperature Up (▲) and Temperature Down (▼) buttons to set your desired temperature.
• Fan Speed: Press the FAN SPEED button to select from multiple fan speeds (e.g., Low, Medium, High, Auto).
• Swing Function: Activate the SWING button for automatic vertical louver movement.

4.3 Special Features

• Xpandable+ Technology: This feature automatically adjusts the compressor RPM to increase cooling capacity by up to 110% when needed, ensuring faster cooling and higher humidity removal.


Figure 4.2: Xpandable+ Technology
This image explains how Xpandable+ technology automatically adjusts to increase cooling capacity and improve humidity removal for faster cooling.

• 4-Way Swing: This function ensures uniform air distribution across the room by automatically moving both horizontal and vertical louvers.


Figure 4.3: 4-Way Swing
This image demonstrates the 4-Way Swing feature, which disperses air in multiple directions for comprehensive room coverage.

• Long Air Throw: Designed to cool larger spaces effectively, ensuring air reaches every corner of the room.


Figure 4.4: Long Air Throw
This image illustrates the long air throw capability, which helps cool larger spaces and ensures uniform cooling throughout the room.

• Auto Convertible: The AC can automatically adjust its cooling capacity based on the ambient temperature and heat load.
• Filter Clean Indicator: An indicator light will notify you when the air filter requires cleaning.

5. Maintenance

Regular maintenance ensures optimal performance and longevity of your air conditioner. Always turn off the power supply before performing any maintenance.

5.1 Air Filter Cleaning

The Anti Bacterial Mesh Filter should be cleaned regularly (e.g., every two weeks or when the Filter Clean Indicator illuminates) to maintain air quality and cooling efficiency.

1. Open the front panel of the indoor unit.
2. Remove the air filters.
3. Clean the filters using a vacuum cleaner or wash them with lukewarm water and a mild detergent.
4. Rinse thoroughly and allow them to dry completely in a shaded area before reinstalling.
5. Close the front panel.

5.2 ice Clean (FrostWash Technology)

The ice Clean feature, powered by FrostWash Technology, helps keep the indoor unit coil clean by freezing and then melting frost, washing away dust and dirt.

1. Freeze: The unit condenses moisture and freezes it on the coil, capturing dust.
2. Melt: The frost melts, draining away the trapped dust from the IDU coil.
3. Dry: The blower dries out the coil to prevent mold growth.

To activate this function, press the dedicated FrostWash button on your remote control.

Figure 5.1: ice Clean Process
This image visually explains the three steps of the ice Clean (FrostWash) technology: freezing moisture to capture dust, melting the frost to wash away dirt, and drying the coil.

5.3 Outdoor Unit Cleaning

Periodically check the outdoor unit for any obstructions (leaves, debris) around the air inlet and outlet. Clean the exterior with a soft, damp cloth. The outdoor unit features an anti-corrosive coating for enhanced durability.

6. Troubleshooting

Before contacting customer service, refer to the following table for common issues and their solutions.

If the problem persists after attempting these solutions, please contact Hitachi customer service.

7. Specifications

Figure 7.1: Cooling Performance
This image illustrates the AC's ability to deliver 100% cooling capacity even at 43°C and operate efficiently in tropical temperatures up to 52°C.

Figure 7.2: Copper Tubes and Outdoor Unit
This image highlights the 100% inner grooved copper tubes for enhanced heat transfer and the outdoor unit's features, including R32 refrigerant and anti-corrosive coating.

8. Warranty Information

Your Hitachi air conditioner comes with the following warranty:

• Standard Warranty: 1 Year on the entire unit.
• Compressor Warranty: 10 Years.
• Controller Warranty: 5 Years.

To avail warranty services, please retain your purchase invoice. The warranty covers manufacturing defects under normal use conditions. Damage due to improper installation, misuse, or unauthorized repairs is not covered.

8.1 Extended Warranty Option

An optional 5 Years of Worry-Free Cooling plan is available for an additional cost (e.g., ₹299+GST). This plan extends the standard warranty by 4 years beyond the invoice date and covers parts only. The first year includes 2 Wet & 2 Dry services with free gas charging for compressor/coil issues. From the 2nd to 5th year, parts are covered, but visit and labor charges apply.

9. Customer Support

For any queries, service requests, or technical assistance, please contact Hitachi customer care:

• Customer Care Number: 7567884848
• Email: customercare@jci-hitachi.com
• Manufacturer Address: Bosch Home Comfort India Limited, Hitachi Complex, Karannagar, Kadi. Dist. Mehsana- 382715. Gujarat. India.