Home Support App Diagnostic Feature Upgraded to “My Home Appliance Diagnosis”

About “My Home Appliance Diagnosis”
1. Target Refrigerator Models for Status Determination (as of June 2026):
Hitachi Brand Appliance After-Sales Service
About “Happiness Up”
Hitachi’s Connected Industries Sector Initiatives
1. Related Links:

About “My Home Appliance Diagnosis”

“My Home Appliance Diagnosis” is available to users of Hitachi’s connected refrigerators (excluding models R-KC11R, R-KX57K) and connected washing machines (excluding model BD-NX120C). This service offers a free and easy way to diagnose appliance symptoms using the product’s operation data. It’s important to note that the operation data used for diagnosis does not include recent data (e.g., same-day data), so the diagnosis result may differ from the appliance’s current state.

A new feature has been added for some refrigerator models, which analyzes past operation data to determine the appliance’s status as “Normal,” “Caution,” or “Malfunction,” and provides relevant advice. If necessary, customers can also apply for repair services directly from the diagnosis screen. For models that cannot provide a “Normal/Caution/Malfunction” determination, advice will be displayed based on operation data. Immediate diagnosis may not be possible if insufficient data is available, such as shortly after pairing.

This expansion of diagnosable symptoms and the inclusion of historical data analysis are intended to help identify the causes of malfunctions, reduce customer anxiety, and facilitate smoother problem resolution.

For more information on how to use “My Home Appliance Diagnosis,” please visit:
https://kadenfan.hitachi.co.jp/support/hapiness_app/q_a/a17.html

Target Refrigerator Models for Status Determination (as of June 2026):

2021 Models: R-HXCC62S, R-HXCC54S, R-HWSCC47S, R-HWSCC47SL
2022 Models: R-GXCC67T, R-HXCC62T, R-HXCC54T, R-HXC62T, R-HXC54T, R-HWC62T, R-HWC54T, R-HWC49T
2023 Models: R-GXCC67V, R-HXCC62V, R-HXCC54V, R-HXC62V, R-HXC54V
2024 Models: R-GXCC67W, R-GXCC67X, R-GZC67X, R-HXCC62X, R-HXCC54X, R-HXC62X, R-HXC54X, R-HWC62X, R-HWC54X, R-HWC49X, R-VWC57X, R-VWC50X
2025 Models: R-HZC62Y, R-HZC54Y, R-HWC62Y, R-HWC54Y, R-HWC49Y

Other connected refrigerators (excluding R-KC11R, R-KX57K) and connected washing machines (excluding BD-NX120C) will continue to offer the same functionality as the previous “Diagnose Symptoms with Your Smartphone” feature.

Regardless of the diagnosis result, if an “Appliance Emergency Alert” is received in the app, or if there is damage to the appliance, it is recommended to consider inspection or repair.

Hitachi Brand Appliance After-Sales Service

On April 21, 2026, Hitachi, Ltd. and Hitachi GLS announced the establishment of a new company in partnership with Nojima Corporation, aimed at further growth of the Hitachi brand home appliance business.

Hitachi brand appliance after-sales services, including repair and maintenance, will continue without interruption. Hitachi GLS will continue to provide these services until the series of share transfers is completed, after which the new company will assume responsibility. Through continued support utilizing digital technology, the goal is to ensure customers can use Hitachi brand home appliances safely and for an extended period.

For more details on the strategic partnership, please refer to the press release:
https://www.hitachi.com/ja-jp/press/articles/2026/04/0421b/

About “Happiness Up”

Name Origin: The name “Happiness Up” embodies Hitachi GLS’s goal of enhancing consumers’ quality of life. It aims to contribute to various improvements, such as elevating the quality of time spent at home and improving the efficiency of household chores.

App Overview: “Happiness Up” strives to provide a richer experience beyond mere convenience, offering various tips related to housework and supporting a comfortable daily life. This app is available to all customers who own Hitachi brand home appliances. It allows users to manage their registered Hitachi appliances in a list, easily find desired information, and simplify inquiries and repair requests. Furthermore, it integrates with the “Hitachi Home Appliance Online Store,” making it easy to purchase replacement appliances, consumables, and parts.

Frequently asked questions about the app can be found here:
https://kadenfan.hitachi.co.jp/support/hapiness_app/q_a/

Hitachi’s Connected Industries Sector Initiatives

Hitachi GLS, part of Hitachi’s Connected Industries (CI) sector’s Urban Solutions & Services Business Unit, is focusing on “HMAX for Buildings”—a suite of next-generation solutions that combine rich installed base data (digitized assets) with domain knowledge and advanced AI. Through the provision of “Facility Services” centered on these solutions, Hitachi aims to maximize customer lifetime value and transform industries globally, thereby contributing to the realization of a prosperous society.