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Unresolved E3 extruder not heating

Discussion in 'Troubleshooting' started by Tina Hurlbert, Sep 27, 2020.

  1. Tina Hurlbert

    Tina Hurlbert New Member

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    I love my E3 and it's been working great. However, today I went to fire her up and the extruder will not print. The bed heats just fine, but the extruder just stays at 30 degrees C. Help!
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

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    OK, either
    1) the heater core in the extruder is bad
    or
    2) the wiring TO the heater core is bad
    or
    3) the thermistor is failing
    or
    4) the RAMPS board is failing on the extruder heater output.

    You can rule out 3 by seeing if it is actually feeling heat from the extruder when you tell it to heat or does it stay at room temp?
    If it does not actually heat at all then 1, 2, or 4 are your culprits

    If you can use the quick disconnects to disconnect the heater core from the hotend and put a multimeter across them and then tell the heater to heat the hotend. Do you have roughly 12vdc output to the heater core? If yes then the heater is bad and that is a cheap fix. If the answer is NO then you need to track the wiring back to the RAMPS board under the printer and make sure that there is no loose connectors or broken wires and that they are still solidly connected to the RAMPS board.
     

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