In this article you will learn how to check if the cooler is working properly
To check the operation of the cooler fan, turn on your printer and go to Temperature, and preheat the hotend. The cooler fan should turn on once the temperature in the hotend is over 90º.
If the fan does not turn on, check the following:
Make sure that the flat cable on the extruder board is properly connected, and check the good condition of the cables also. To do so, turn off the printer and unplug it from the power outlet.
If the cable is properly connected and the fan does not turn on, swap the cooler fan from one printing head to the other. Have in mind that this procedure can only be done if one of the cooler fans is turning on. If both fans are failing you can skip this part.
If you have the tools you can also unplug the cooler fan from the extruder board and feed it with an external power supply (12 volts) to see if it works.
If you confirm that the issue is on the cooler fan you can replace it with a new unit.
If the issue is not located on the fan, you can run the same procedure with the extruder board. Swap the extruder board from one printing head to the other to see if the issue keeps happening on the same printing head or moves to the other one. Have in mind that this procedure can only be done if one of the cooling fans is turning on. If both fans are failing you can skip this part.
If you confirm that the issue is on the extruder board you can replace it with a new unit.
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Repair didn’t go as planned? Check out our forum community for troubleshooting help.
It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. Maintenance Plan
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