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Answered MAXTEMP triggered

Discussion in 'Troubleshooting' started by Benz46, Jan 23, 2019.

  1. Benz46

    Benz46 New Member

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    Hello All,

    I need some tips.
    I just put a new Extruder from Robo3D, i got a message "Extruder switched off. MAXTEMP triggered.
    I have this same problem long time ago, it was caused by my mistake plugging the connectore in reverse between the thermistor and heat sink.
    But now it's different, i have tried to switch between the two and still message appear, all i can do is Home X,Y,Z axis, nothing more.

    I have check the plugs on board, seem ok (see attached).

    What should i do?

    Thanks in advance. IMG20190123170604-B.jpg
     
    #1 Benz46, Jan 23, 2019
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Well, Robo uses an NTC thermistor (Negative Temperature Coefficient) so that means MAXTEMP (too high) is zero ohms (or close) on the thermsitor reading. A short circuit. You have a wiring problem or a bad thermsitor.
     
    #2 mark tomlinson, Jan 23, 2019
  3. Benz46

    Benz46 New Member

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    Hope it's not the thermistor because it's a brand new comes with hot end and heat sink wire already plug in :(
     
    #3 Benz46, Jan 23, 2019
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You can disconnect the wire to the thermistor and read it with a meter (the wire from the connector back to the thermistor -- Ohm scale -- something that can read 100k) and see what you get. It should be ball-park 100k
     
    #4 mark tomlinson, Jan 23, 2019
    Geof likes this.

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