This error can appear on UltiMaker S Series printers using the Air Manager (S5 and S6 with add-on, or the S7 and S8 with integrated Air Manager).
Introduction
As the error message indicates, the Air Manager fan is unable to reach the desired speed during operation. The printing process is stopped for safety reasons, and the print cores and build plate cool down.
Note: If the fan is not spinning, the print cannot continue and is therefore aborted. Without airflow control, the heated components can quickly cause other parts inside the build chamber to overheat. This can cause part deformation and excessive printer damage.
Troubleshooting
The error could be caused by the following reasons:
- An object is physically obstructing the rotation of the Air Manager fan.
- There is not enough space behind the Air Manager.
- External ventilation is interfering with the Air Manager fan control.
- There is an error in the software controlling the Air Manager fan.
- The Air Manager fan is defective.
Please perform the following checks:
- Ensure the Air Manager fan is clear of unwanted objects and debris. If necessary, clean the Air Manager fan.
- Ensure there is at least 10 cm clearance behind the Air Manager.
- Ensure the printer's firmware is up to date.
Fan hardware problem
If the tips above have not helped to resolve the error message, there could be a hardware problem with the Air Manager fan. It may need to be replaced; contact support or your local reseller if you need more information or troubleshooting help.
Tip: When contacting support, please share the serial number of the Air Manager (add-on) or printer (S7 or S8) and the printer's log files.
To replace the fan, follow the instructions in this guide:
Repair manual - UltiMaker S5 Air Manager fan
Note: During or after the replacement, please share the batch number of the defective fan with UltiMaker for traceability of fan-related issues.
