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Hitachi RAK-25NHA1 User Manual

Hitachi RAK-25NHA1
26 pages
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ENGLISH
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT
MODEL
RAK-18NHA1
RAK-25NHA1
RAK-35NHA1
Instruction manual Page 1~26
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
INDOOR UNIT
RAK-18NHA1
RAK-25NHA1
RAK-35NHA1
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Hitachi RAK-25NHA1 Specifications

General IconGeneral
Capacity2.5 kW
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
RefrigerantR410A
Power Supply220-240V, 50Hz
Noise Level (Outdoor)50 dB(A)
TypeSplit Type

Summary

Safety Precautions

Precautions During Installation

Important safety guidelines to follow before and during the installation of the unit.

Precautions During Shifting or Maintenance

Safety measures for moving or servicing the air conditioner to prevent accidents.

Precautions During Operation

Essential safety advice for operating the air conditioner correctly and safely.

Names and Functions of Each Part

Indoor Unit Components

Identifies and describes the various parts and indicators of the indoor unit.

Model Name and Dimensions

Lists the model names and provides physical dimensions (width, height, depth) for the unit.

Indoor Unit Indicators

Operation Indicator Lights

Details the function and meaning of the operation indicator lights on the indoor unit.

Temporary Switch Functionality

Explains how to use the temporary switch for starting/stopping the unit when the remote is unavailable.

Remote Control Unit Functions

Remote Controller Overview

Describes the remote control's range, handling, and initial response time after battery insertion.

Remote Control Precautions

Provides guidelines on where to store and how to handle the remote controller to ensure proper function.

Various Functions

Auto Restart Control

Details the automatic restart feature after a power failure and how to disable it.

Automatic Operation Mode

Explains how the unit automatically selects operation mode based on room temperature.

Heating Operation

Dehumidifying Operation

Dehumidifying Function Details

Explains how the dehumidifying mode works, adjusting to room temperature and stopping when the target is met.

Cooling Operation

Fan Operation

Fan Speed (Auto) Functionality

Describes how the fan speed automatically adjusts in cooling/heating operations for optimal comfort.

Setting the Timer

Setting Time, Day, and Month

Instructions for setting the current time, day, and month using the timer control button.

Setting the Off-Timer

Guide on how to set the timer to automatically turn the unit off at a specified time.

Setting the On-Timer

Guide on how to set the timer to automatically turn the unit on at a specified time.

Setting the On/Off-Timer

Instructions for setting a combined timer to turn the unit both on and off at specified times.

Cancelling Timer Reservations

Procedure to cancel any set timer reservations for the air conditioner.

Setting the Sleep Timer

Sleep Timer Functionality

Explains how the sleep timer works to gradually adjust settings for a comfortable night's sleep.

Cancelling Sleep Timer Reservations

Procedure to cancel a previously set sleep timer reservation.

Sleep Timer Explanation and Notes

Adjusting Air Deflector

Horizontal Air Deflector Adjustment

Details how to adjust the horizontal air deflector for optimal air direction, including auto swing.

Vertical Air Deflector Adjustment

Explains how to manually adjust the vertical air deflector to direct airflow left and right.

Replacing Remote Control Batteries

Ideal Operation Practices

Maintaining Suitable Room Temperature

Guidance on optimal room temperatures for health and energy efficiency, with a warning about freezing temperatures.

Using Curtains or Blinds

Tips on using window coverings to reduce heat transfer and improve room temperature control.

Proper Ventilation Practices

Recommendations for ensuring adequate fresh air circulation by occasionally opening doors and windows.

Effective Timer Usage

Advice on using timer functions, particularly the off/on timer, for comfortable room temperature upon waking.

Air Filter Cleaning Reminder

Emphasizes the importance of cleaning the air filter every two weeks to maintain air volume and cooling efficiency.

Adjusting Temperature for Vulnerable Groups

Highlights the need to adjust room temperature and airflow carefully for babies, children, and the elderly.

User Information and Troubleshooting

Room Heat Load and Cooling Capability

Explains that room temperature targets may not be met if heat load exceeds unit capacity.

Operation During Long Standby

Advises switching off power during long periods of non-use to save energy, noting standby consumption.

Lightning Protection Measures

Recommends stopping operation and unplugging the unit during lightning to protect it from damage.

Electrical Interference Avoidance

Suggests maintaining a minimum distance from electrical products to prevent interference with the unit or remote.

Attaching Air Cleansing Filters

Notes on Air Cleansing Filters

Provides information on filter performance impact, cleaning, reusability, and the necessity of using filters.

Air Filter Cleaning

Filter Cleaning Frequency and Replacement

Recommends monthly cleaning and replacement every 3-6 months for optimal performance and deodorizing function.

Filter Washing Cautions

Warns against using hot water, direct sun drying, or detergents that can damage the filter.

Washable Front Panel Cleaning

Front Panel Removal and Attachment

Step-by-step guide on how to detach and reattach the front panel of the indoor unit.

Maintenance for Long Off Period

Regular Inspection Points

After-Sale Service and Warranty

Service Checkpoints and Troubleshooting

Lists common issues and checks to perform when the unit does not operate or cool/heat properly.

Operational Notes and Phenomena

Describes occasional operational sounds or odors that are normal and not indicative of a fault.

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