E3D Revo Troubleshooting

     This information was sourced directly from the E3D Technical Support team. For further troubleshooting, please contact either lodge a ticket or [email protected].

Phase One Troubleshooting:

• Check and confirm that the voltage of the HeaterCore matches the voltage of your printer. For further details on how to do this please refer to our blog post found here: https://e3d-online.com/blogs/news/12v-vs-24v
• Check and confirm if the wires between the HotEnd and Control Board are stable and do not have any loose connections.
• Does wiggling wires by the connector yield erratic readings?
• Does wiggling the wires by the HeaterCore yield erratic results?
• Do the erratic temperature readings only happen at temperature?
• Do erratic temperature readings happen only when the print head is being moved?
• Although a PID is not required in our assembly guide we do require this step to be completed as part of the troubleshooting process. Please complete a PID Tune as the HeaterCore is much smaller than the previous style Heater Block an unstable PID Tune can make this look like an erratic sensor.

If the issue persists, please move on to Phase Two Troubleshooting, and provide the requested details. 

Phase Two Troubleshooting:

 Before providing the below information, please ensure that the HotEnd is at ambient room temperature.

• Provide the HeaterCore serial number, packaging Work Order number and Batch number. See this article for examples.

• Provide the firmware type that you are running (e.g. Marlin, RepRap or Klipper) and also confirm the thermistor setting being used.
• Provide the Ambient Room Temperature.
• Provide the temperature reading from the HotEnd at ambient room temperature.
• Provide clear pictures of the end of the HeaterCore similar to how we have here.

• If you have access to a multimeter, please provide the resistance reading from the thermistor with the multimeter set to 200k. Note the Thermistor wire is plain white as represented in the image below.
• Does this reading change if you wiggle the wire near the connector? Check the connector crimps as shown in this article.