It is an application that searches for the error code displayed when the air conditioner, air conditioner, and ventilation equipment of major manufacturers in Japan fails and derives a solution.
This app user can also post a review for each error, so there is a possibility that you can find a solution from your own information from experienced people.
The basic error information is downloaded into the app via the Internet when the app is started for the first time, but the data update function makes it possible to correct existing information and update to the latest information.
Since each error code search refers to the database in the app, it can be searched even in the offline state (out of service area) without internet connection.
Searching for user reviews for each error refers to the latest data and requires an internet connection