The Start / Stop button does not respond when pressed, and the App reports fault code 0xFD01170003.

The system did not start properly
The button light board is damaged
The connecting cable is damaged or loose
The software system is frozen
Disassembly tool/pry tool
None
If the issue occurs, record a troubleshooting video for reference before proceeding.
Unplug the printer power supply, then reconnect the power to restart the device. This step is used to determine whether the system can start normally and to rule out a temporary system freeze. A normal startup will show the following behaviors:
A startup sound is heard when powering on
The Start / Stop button shows a blue, green, or red indicator light, and the print head status indicator lights up green
After powering on, wait for the device self-check process to complete.
Before unbinding the device, upload the printer logs for backup. After unbinding, logs cannot be uploaded until the device is rebound. Log upload guide:
https://support.eufymake.com/s/article/Log-Feedback-Upload-Process-App-PC-Overview
Unbind the device and then rebind it. Please refer to the https://support.eufymake.com/s/article/Device-Binding-Operation-Guide-Initialization-and-Calibration-Procedures
During the process, check whether pressing the Start / Stop button produces feedback in the PC or mobile App.
If pressing the button allows the process to proceed to the next step, the button trigger function is normal.
If pressing the button does not allow the process to continue, proceed to the next troubleshooting step.
Power off the printer, open the upper housing, and check whether the button cable connector is loose or whether the cable shows damage or indentation. Refer to the https://support.eufymake.com/s/article/Printer-Cover-Disassembly-and-Assembly-SOP
Normal connection reference images:




Abnormal connection reference image (connector loose or disconnected)

If the connector is loose or disconnected, reconnect it securely. Then repeat steps 2 through 6 to verify whether the issue is resolved.
Your Order Information
Printer SN.
Printer and App Logs.
Relevant photos and videos.