Hitachi R-ZX740KN User Manual (English)

Questions and Answers:

A
Angel JacobsAug 12, 2025
Why my Hitachi Refrigerator doesn't make ice?
- M
  markruizAug 12, 2025
  If ice cannot be made at all, check if “Off” is illuminated in the Display Section, which indicates that ice making is set to Stop Ice Making. To resolve this, set it to “On” or “Quick” mode. Also, check if "Water" is lit in the Display Section, indicating low water in the water supply tank. If the water in the tank is low, ice may not be made. Add water until the water level reaches the “Container-full line” of the water supply container. Ensure the water supply container is pushed firmly beyond the “Container set position” line, and that the frame is pushed into the rear until the lever slides right. Finally, ensure nothing other than ice is stored in the ice case.
M
Michele SmithAug 16, 2025
How to improve cooling in my Hitachi R-ZX740KN Refrigerator?
- K
  Keith SummersAug 16, 2025
  If your Hitachi Refrigerator is not cooling well, it might be because the unit was recently installed. Cooling may take more than 24 hours after installation. Ensure you place food at appropriate intervals, avoid opening and closing the door frequently, and allow sufficient time for cooling, especially during summer or when storing a large amount of food.
J
Jennifer DunnAug 20, 2025
Why does it take so long to make ice in my Hitachi Refrigerator?
- J
  Jacob MorganAug 20, 2025
  If it takes a long time to make ice in your Hitachi Refrigerator, consider the following: Check if the ice case is filled with ice over the limit line of stored ice amount, and level the ice. Minimize door openings and ensure sufficient clearance between stored food items to facilitate cooling. Note that ice making may take longer in low surrounding temperatures or immediately after changing the setting from “Off” to “On”. Also, ensure that no food or package is preventing the Freezer or Ice Compartment doors from closing completely and that the “Energy Saving” mode is disabled.
M
Madeline MyersAug 23, 2025
Why is my Hitachi R-ZX740KN Refrigerator not making ice after installation?
- R
  Robin BarrAug 23, 2025
  If no ice is being made in your Hitachi Refrigerator, it may be because the unit is newly installed. It typically takes more than 24 hours for the first ice to be made after installation. Place food at appropriate intervals, avoid opening and closing the door frequently, and wait.
I
ibryantAug 27, 2025
Why is my Hitachi R-ZX740KN making small ice?
- J
  Jennifer MeyerAug 28, 2025
  If small ice is being made in your Hitachi Refrigerator, it could be due to low water in the water supply tank. Add water until the water level reaches the “Container-full line” of the water supply container.
D
dhillAug 31, 2025
What to do if the Control Panel of my Hitachi R-ZX740KN Refrigerator isn't responding?
- B
  Brooke GrayAug 31, 2025
  If the Control Panel of your Hitachi Refrigerator isn't responding, first check if the Display Section is lit. If not, the Operation Section may be locked; refer to Pg.62 to unlock it. Ensure the Refrigerator Compartment Door is closed. Wipe off any water drops or dirt from the Control Panel with a wet cloth, then dry it. Touch the panel directly with your finger, avoiding gloves or plasters, and ensure you're only touching the intended Control Panel.
S
Stephanie LawsonSep 4, 2025
How to fix a Hitachi Refrigerator when the ice tray frame cannot be drawn?
- J
  Joshua VillegasSep 4, 2025
  If the ice tray frame of your Hitachi Refrigerator cannot be drawn, it might be because “Off” is set. The ice tray cannot be drawn when the auto ice maker is operating. Set it to “Off”. When the “Off” indicator lamp is blinking, wait for 1 minute until “Off” is lit, and then draw the ice tray.
B
brian75Sep 8, 2025
Why is the Operation Section unlit on my Hitachi R-ZX740KN Refrigerator?
- T
  Thomas BernardSep 8, 2025
  The Operation Section of your Hitachi Refrigerator turns off about 40 seconds after operation to save energy. To turn it back on, touch or open the Refrigerator Compartment door.

Hitachi R-ZX740KN Specifications

General

Inverter Compressor	Yes
No Frost	Yes
Inverter Technology	Yes
Vegetable Compartment	Yes
Water Dispenser	Yes
Color	Black
Ice Maker	Automatic

Summary

Instruction Manual

Refrigerator-Freezer Model

Identifies the specific Hitachi refrigerator-freezer model.

Safety Suggestions

Installation Safety

Precautions for safe installation of the refrigerator to prevent hazards.

Power and Cable Safety

Guidelines for safe handling of power cords and plugs to prevent shocks or fires.

Usage Safety Precautions

Important safety guidelines to follow during the operation of the refrigerator.

Before Use

Preparation and Arrangement

Instructions on how to arrange the refrigerator and prepare it for use.

Leveling the Refrigerator

Steps to ensure the refrigerator is level for proper operation and door closure.

Learn Part Names and Functions

Compartment Overview

Identifies refrigerator compartments and provides temperature guides and food examples.

Auto Door Functionality

Setting the Auto Door

How to enable or disable the Auto Door function for the refrigerator and drawer.

Refrigerator Compartment

Adjusting Compartment Temperature

How to set and adjust the temperature inside the refrigerator compartment.

Adjusting Shelf Height

Guidance on adjusting the height of shelves and pockets for storage.

Vacuum Compartment

Using Appropriate Temperatures

Key points for setting temperatures and storing food in the vacuum compartment.

Ice Compartment and Ice Maker

How to Make Ice

Step-by-step instructions for making ice using the automatic ice maker.

Freezer Compartment

Storing Foods in Freezer

Guidance on storing different types of food in the upper and lower freezer sections.

Vegetable Compartment

Adjusting Vegetable Compartment Temperature

How to adjust the temperature for the vegetable compartment.

Various Functions

Fine Temperature Adjustment

How to finely adjust the temperature for refrigerator and freezer compartments.

Control Panel Locking

Instructions on how to lock and unlock the control panel to prevent unintended operation.

Energy Saving Features

Information on the 'eco' operation and door open/close indicators for energy efficiency.

Maintenance

Cleaning Guide

Detailed instructions for cleaning the power plug, door gaskets, surface, shelves, and receivers.

How to Remove and Attach Parts

Step-by-step guide for removing and attaching various internal parts of the refrigerator.

Troubleshooting

Initial Stage and Control Panel Issues

Solutions for issues encountered during installation and control panel operation.

Ice Making Troubleshooting

Troubleshooting steps for problems with ice production, size, and quality.

Overcooling and Noise Issues

Addressing problems with the refrigerator cooling too much or generating abnormal sounds.

Vacuum Compartment Issues

Troubleshooting common problems related to the vacuum compartment's function and sealing.

Vegetable Compartment Issues

Solutions for condensation, smells, and door problems in the vegetable compartment.

Auto Door and Drawer Troubleshooting

Resolving issues with the automatic refrigerator door and drawer operations.

Other Operational Issues

Addressing electrical feel, radio interference, minor cosmetic issues, and pest control.

Available Parts

Transporting the Refrigerator

Instructions for safely moving and transporting the refrigerator.

Non-CFC Refrigerators and Storable Weight

Environmental Information

Details about hydrocarbon refrigerants and their environmental impact.

Food Storage Weight Limits

Table showing the maximum weight capacity for shelves and cases.

After-Sales Service

Hitachi Service Centers

Contact information for Hitachi service centers in different regions for repairs.

Hitachi R-ZX740KN User Manual

Table of Contents