Table of Contents
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SPLIT TYPE AIR CONDITIONER
INDOOR UNIT/OUTDOOR UNIT
OUTDOOR UNIT
RAC-25YHA3
RAC-35YHA4
Instruction manual
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
MODEL
RAS-25YHA3/RAC-25YHA3
RAS-35YHA4 /RAC-35YHA4
– 1 –
INDOOR UNIT
RAS-25YHA3
RAS-35YHA4
Page 1~20
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Table of Contents
Related Manuals for Hitachi RAC-35YHA4
Summarization of Contents
Air Conditioner Safety Precautions
Installation Safety Guidelines
Essential safety measures to follow before and during the installation process.
Shifting and Maintenance Safety Measures
Guidelines for safe handling during unit relocation or maintenance to prevent accidents.
Air Conditioner Part Identification and Functions
Indoor Unit Components and Functions
Details on the parts and their roles within the indoor air conditioning unit.
Outdoor Unit Components and Functions
Explanation of the parts and their functions in the outdoor unit.
Advanced Air Conditioner Functions
Auto Restart Control Feature Explained
Automatic resumption of operation after power interruption.
Automatic Operation Mode Guide
How the unit automatically selects heating or cooling based on room temperature.
Heating Operation Guide
Defrosting Process Explanation
Explanation of the automatic defrosting cycle during heating operation.
Dehumidifying Operation Guide
Dehumidifying Function Details
How the dehumidifying mode works and its operational parameters.
Fan Operation and Air Circulation
Fan Speed Auto Mode Function
Explanation of how fan speed adjusts automatically in cooling/heating modes.
Setting Timer Functions
Setting the Current Time
Instructions for setting the current time on the remote controller.
Programming the Off-Timer
How to program the unit to turn off at a specific time.
Programming the On-Timer
How to program the unit to turn on at a specific time.
Programming the On/Off-Timer
How to program the unit to turn on and then off at specified times.
Adjusting Airflow Direction
Upward and Downward Airflow Control
How to adjust the horizontal air deflector for vertical airflow direction.
Left and Right Airflow Control
How to adjust the vertical air deflector for horizontal airflow direction.
Air Conditioner Maintenance Procedures
Air Filter Cleaning Procedure
Step-by-step guide for cleaning the air filter to maintain performance.
Front Panel Cleaning Procedure
Instructions for cleaning the front panel of the indoor unit.
Long-Term Storage Maintenance
Procedure for preparing the unit for extended periods of non-use.
Product Information and Functionality
Heating, Cooling, and Dehumidifying Capabilities
Details on the unit's heating, cooling, and dehumidifying performance.
Overview of Various Functions
Description of additional functions like fan speed adjustments and operation modes.
Timer Programming and Sleep Timer Operation
How to use the timer functions for scheduled operation.
Regular Inspection and Checks
After-Sales Service and Warranty Information
Guidance on what to check before requesting service and warranty details.
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