Device Error – Qingmu

When This Article Applies

Use this article when a customer asks:

What the "Device Error" message means in the app
What they should do when they see "Device Error"
What to do if the error changes to "Sorry, the device is not functional. Please remove it."

Response Content

When the app displays a "Device Error" error message, it indicates that the sensor is experiencing a temporary abnormality. Due to certain temperature or physical factors, the sensor may sometimes recover on its own.

What should you do?

Please follow the steps below:

Do not remove the device immediately.
Wait for at least 3 hours while keeping the sensor in a stable environment.
Avoid:
- Extremely high or low temperatures (e.g., hot springs, hot baths, direct sunlight)
- Bumping, pressing, or physically impacting the sensor

If the error changes or shows a different message

If you see the message "Sorry, the device is not functional. Please remove it." or the "Device Error" changes to this message, it means the device is abnormal and can no longer be used.

To proceed with after-sales service, please collect the following information:

Order ID (or proof of purchase)
Screenshot of the device name in the app
Two photos of the application site (one while wearing, one after removal)
Photo of the soft needle/electrode (after removal)
Photo of the small hole on the sensor

Instructions

Output the Response Content exactly as written. Do not add, remove, or rephrase.
If the customer asks about "Device Error", provide the full Response Content.
Do not promise warranty, replacement, or refund. Only state that information is needed for after-sales service.