- Cooling fan not working.
When the triggering conditions are met, such as the nozzle temperature exceeding 55°C or printing to the second layer, the fan does not show any signs of rotation, and the fan blades remain stationary.
- Intermittent stopping.
During the print, the cooling fan stops for a second then starts again intermittently, or the fan may frequently starts and stops before the triggering conditions go away.
- Stuttering rotation.
The fan exhibits noticeable stuttering during rotation, causing speed fluctuations and an inability to maintain a stable, uniform rotation.
- The cooling fan triggering condition isn't met.
- For the heat break cooling fan, the fan starts to cool the throat pipe when the nozzle temperature reaches approximately 55°C.
- For the model cooling fan, it turns on after the second layer of the model is printed to accelerate the cooling and setting of the model surface.
- For the rear/auxiliary cooling fan, the triggering condition is the same as that of the model cooling fan. It is also equipped with a manual control switch， featuring physical control priority. If the switch is off, the fan will not start even if the automatic triggering conditions are met. Make sure that the wiring connection is secure and the switch is turned on before use.
- Mechnical defects.
For example, the fan blades have foreign objects, dust, and tangled materials.
- Wiring connection are loose.
- Incorrect parameter setting of the slicing files.
- Make sure that the temperature of the hotend cooling fan, motherboard cooling fan and the heat break cooling fan is set higher than 55 °C.
Note: The motherboard cooling fan should be checked first to prevent the motherboard from overheating.
- Make sure the model's cooling fan is off for the first two layers.
- Make sure that the power supply fan begins operating as soon as the printer is powered on.
Note: If the power supply fan does not turn after the printer is powered on, do not continue to use the printer. Check immediately to avoid burning out the power supply.
- Restore default settings the model/rear cooling fan.
- Update the firmware. Download the correct firmware for your printer via the https://www.elegoo.com/pages/download . Re-burn it and then restart the printer.
- Check temperature sensing through identifying the temperature on the touchscreen.
Make sure that the wiring is secure. If the wiring or interface is damaged, replace the wiring or the corresponding PCB board. If the fan is broken, install a new fan of the same model.
- Clean the oxide layer from the terminals with alcohol.
- Tighten the connectors, secure the wires, and replace any damaged terminals.
If the power input is normal but the motherboard or power supply is malfunctioning, replace either the motherboard or the power supply.
Restart the printer or restore the software to its factory settings.
After turning off the fan, using a pair of tweezers to remove any foreign objects and clean out dust.
¶ Step 2. Adjust and re-install.
Tighten any loose screws and level the fan to prevent friction.
¶ Step 3. Maintain components.
Apply a few drops of lubricating oil to worn bearings.
If the fan continues to get stuck or produces abnormal noises, replace it with a new one.
¶ Routine Maintenance
¶ Weekly Maintenance
- Clean dust from the surface and interior of all fans.
- Check for loose wiring.
- Manually test the operation of each fan and record the results.
Note: The manual test should be conducted in a non-printing state to avoid affecting the quality of the model being printed.
¶ Monthly Maintenance
- Calibrate the temperature sensor of the heat break cooling fan.
- Check the tightness of the securing screws for each fan.
- Apply lubricant to the bearings of all fans.
¶ Quarterly Maintenance
- Conduct a comprehensive inspection of wiring for signs of aging and replace any damaged wires.
- Test the stability of the power supply voltage for each fan and investigate potential faults.
- Assess the wear and tear of power supply fans and motherboard cooling fan that have been in use for over one year, replacing them proactively to avoid sudden failures.
If the issue persists, contact the ELEGOO after-sales technical support team through official channels.
Provide the troubleshooting results, photos of the printing failure, the type of consumables used, and the .gcode file. The ELEGOO technical team will investigate and provide a solution based on the information you provide.