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This product has been discontinued, and its end-of-service date has passed. While it is no longer supported, the information on this page remains available for your reference.
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This error message can occur on the UltiMaker 3 and UltiMaker 3 Extended when the print core fails to heat up or maintain its set temperature. The printer is trying to heat up the print core, but the print core does not report an increase in temperature. The display will show which print core is affected.
Tip: If you are looking for the heater error on S series machines, this is ER31.
The heater error can have several different causes, including the print core hardware, the profile settings, the environment, or the material quality.
Troubleshooting tips
If this error appears, please perform the following checks:
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Check the print core
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Check if the error message continues to appear in the same slot after swapping the print cores. If so, the error is not specific to the print core; please check the other tips below. If the error is repeatable for just one print core, clean the connections as described below.
Tip: The UltiMaker 3 diagnostics menu contains a heater-sensor test. Run this diagnostic test to check the heater strength.
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Clean the print core connections
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Never touch the contact point at the back of the print core with your bare hands, as oils and grease can affect the connection. Clean the contact points on the print core and on the print head PCB with a cotton swab and > 70% IPA.
Caution: Isopropyl alcohol (CAS nr. 67-63-0) is a hazardous, highly flammable substance. Keep away from heat, sparks, static discharge, and other potential ignition sources. Ensure good ventilation and avoid inhaling the vapor. Read the SDS from your IPA supplier to learn more about the risks and safety precautions, or find more information here: Isopropyl alcohol (IPA) safety.
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Replace the print core
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If the error is repeatable for the same print core, and cleaning the connections did not help, the print core itself may be faulty. You can try the next steps to continue troubleshooting; otherwise, replace the print core.
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Check the silicone nozzle cover
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The silicone nozzle cover must always be installed during printing. This cover protects the print cores from the cold airflow from the fans. Check the quality of the nozzle cover and replace it with a new one if it is damaged or worn.
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Change print settings
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A combination of print settings can also lead to ER15. When printing too fast, the print core could struggle to maintain the correct nozzle temperature. Try lowering the print speed.
Alternatively, the airflow from the side fans could impact the nozzle temperature, especially on larger flat surfaces. Try a lower fan speed.
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Check the environment
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When the printer is in a very cold environment, this could have an effect on the heating efficiency of the print cores. Ensure that the printer is in an environment according to the recommended ambient conditions (15 - 30 °C) and that the printer is not affected by any drafts.
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Dry the material
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Filaments that contain a lot of moisture could show difficulties for the heater to reach and maintain the required temperatures. Therefore, it is important to dry your materials before printing.
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Tip: It could be interesting to take a look at the temperature graph of the printer. This is accessible (for network-connected printers) by typing the IP address of your printer in a browser and selecting Temperature Graph, or using the direct link http://[IP address]/info/temperature.html. Run a test print with the graph active and take a screenshot after ER15 appears.
