1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Heater in head max temp w/o any instructions

Discussion in 'Troubleshooting' started by jhox616, Jun 1, 2023.

  1. jhox616

    jhox616 New Member

    Joined:
    Jun 1, 2023
    Messages:
    4
    Likes Received:
    0
    I replaced the head on my R1+
    For some reason it just heats up to a max of 288 C with out any instructions having been given to it.
    I thought this was odd as normally you have to give instructions for this.

    I'm at a loss for what to do to fix it.
    I'm going to try and update the firmware and I opened it up but don't know what I'm looking for that would cause this.

    Any thoughts or help would be much appreacited.
    Jerrad
     
    #1 jhox616, Jun 1, 2023
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Moved to R1+ forum (was post in C2 forum)
     
    #2 mark tomlinson, Jun 2, 2023
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Is it actually heating or just indicating that it is heating?
    If it is actually heating then I would suggest it is the RAMPS board failing.
    If it is just indicating that temperature but NOT actually heating it is likely just a bad thermistor.
     
    #3 mark tomlinson, Jun 2, 2023
  4. jhox616

    jhox616 New Member

    Joined:
    Jun 1, 2023
    Messages:
    4
    Likes Received:
    0
    It is actually heating. Which is weird because I thought the micro controller has to tell it to turn on (usually via software over USB)

    Sent from my Power Armor 13 using Tapatalk
     
    #4 jhox616, Jun 2, 2023
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Then the RAMPS board has lost the MOSFET that controls the heater core. Often they fail open (never heat) but sometimes they fail closed (always heat).

    You need to replace the board.

    Robo R1+ RAMPs Board | Partsbuilt 3D

    Click the link for the supplier
     
    #5 mark tomlinson, Jun 2, 2023
    jhox616 likes this.
  6. jhox616

    jhox616 New Member

    Joined:
    Jun 1, 2023
    Messages:
    4
    Likes Received:
    0
    Ok so this hot end isn't the one specifically for the R1+.
    Is it likely to pop the mosfets again if I replace the board?


    Sent from my Power Armor 13 using Tapatalk
     
    #6 jhox616, Jun 2, 2023
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Most 3rd party 12v hotends are compatible.
    If you changed more than the hotend then I'd be more concerned.
    I assume that this was working for some period of time with the configuration you had -- if not then maybe reverting to stock is a good thing to test. Assuming it was good after your changes, then just replace the RAMPS. They do occasionally die. Usually the thermistor is the first part to die, but if it actually heating as it indicates then the thermistor (and heater core) are fine.
     
    #7 mark tomlinson, Jun 2, 2023
    jhox616 likes this.
  8. jhox616

    jhox616 New Member

    Joined:
    Jun 1, 2023
    Messages:
    4
    Likes Received:
    0
    It worked with the original hot end but I snapped a nozzle off in it so replaced the whole hot end with the V6. That is when Ramps went out. I'm going to test the board to look into replacing the fets or might just buy the board ($44) I just wonder if the thermistor potentially being a different size, if it will pop the ramp's fets again...

    Sent from my Power Armor 13 using Tapatalk
     
    #8 jhox616, Jun 3, 2023
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    As long as it is a 100k NTC thermistor it should work fine. Make sure if you used a different one than stock (like the E3D) you edited the firmware to use the correct thermsitor code.
     
    #9 mark tomlinson, Jun 4, 2023

Share This Page