The Bambu Lab Printer Detects an Incompatible AMS Hub
Some Bambu Lab printer users encounter the code HMS_0700-3000-0001-000B. This message indicates that the machine identifies a hub or concentrator for connecting multiple AMS units that it cannot process. This component is key to managing more than one automatic filament system, but if the firmware or hardware does not accept it, multicolor printing is blocked. 🚫
Understanding the Unrecognized Hub Problem
The error arises because the printer cannot communicate with the device that acts as a bridge for multiple AMS units. The result is direct: the machine cannot operate with multiple feeding systems at once. This completely limits the ability to handle different materials or colors in the same job, forcing a return to single-material configurations.
Initial Steps to Diagnose:- Confirm that the installed concentrator is an official Bambu Lab accessory for your specific model. Third-party hubs often do not use the correct protocols.
- Check all physical connections. Ensure that the hub-to-printer cable is secure and plugged into the designated port, usually labeled for AMS Hub.
- Verify that the device power-on and connection sequence follows the manufacturer's recommendations.
An incompatible hub not only generates an error but paralyzes the printer's most advanced multicolor functionality.
Solving the Compatibility Error
If the hardware is correct, the most likely cause lies in the machine's software. An outdated firmware may lack the necessary drivers to interpret the hub you are trying to use.
Process to Update the System:- Access the printer's touchscreen menu or the Bambu Studio software on the computer.
- Search for and apply the latest firmware version available for your model.
- Fully restart the printer and the hub after updating, so the system scans and detects all connected devices again.
When the Problem Persists
If the error continues to appear with an official hub and up-to-date firmware, the next step is to contact Bambu Lab technical support. They will likely request system logs to diagnose the fault accurately. While it is being resolved, the only operational option is to connect a single AMS unit directly, which restores basic functionality but eliminates the advantage of multicolor printing. 🔧