Nozzle Temp Dropping

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Protolink3d
Posts: 25
Joined: Thu Aug 29, 2013 7:33 pm

Nozzle Temp Dropping

Post by Protolink3d » Thu May 18, 2017 10:26 am

Hi guys,

I have a very weird problem which I hope you guys can help me with. It surfaced last night when I started a print and the nozzle heated up to 260 C and the print started. Within about 30 seconds the print stopped with a "Nozzle too cold" error. I initialized the printer again and did a withdraw. I noticed the nozzle temp climb up to about 256 C before I heard the beep for the extruder motor to start withdrawing. As soon as the motor started to withdraw the nozzle temp started to fall again and within about 8 seconds the temp was down to 244 C and the withdraw stopped. I tried this a few times with extrude and withdraw, and what confounds the hell out of me is that the temp reacts normally when the process of withdraw or extrude is initiated. (ie. it climbs up to the target temp with no problems) but then as soon as the sequence starts the temp starts falling again. The fact that the heater climbs up to 260 every time tells me the heater and RTD for the nozzle is OK.

It is almost as if the heater is then switched off once the beep sounds and the temp is not maintained. The RTD I believe is reading fine because at startup with a cold machine it is reading close to room temp.

I have taken off the FFC Cable, did continuity checks on it pin to pin and re-seated everything. All checks out OK.

Any ideas on what it could be ?
Last edited by Protolink3d on Thu May 18, 2017 10:39 am, edited 1 time in total.

Owen Sparks aka Marksman
Posts: 610
Joined: Tue Mar 15, 2016 9:56 am

Re: Nozzle Temp Dropping

Post by Owen Sparks aka Marksman » Thu May 18, 2017 10:36 am

My BOX has just had 2 new main boards. First for stepper control, 2nd straight after that because the first replacement introduced an new failure of "Nozzle Too Cold"...

If the head and all the cables check out then that would be my next port of call.

Owen S.

xoxu
Posts: 2
Joined: Wed Aug 22, 2018 5:41 am

Re: Nozzle Temp Dropping

Post by xoxu » Wed Aug 22, 2018 5:44 am

Hi,

Just to share a solution I found to solve a lot of E error (temperature error) due to the FFC cable or other in between connector/board.
https://www.thingiverse.com/thing:3059725

Just replace the full lot with a better cable, solved a lot of problem on my side (running for more than 2 weeks now full time)

Hope that help some of you guys.
Cheers

Owen Sparks aka Marksman
Posts: 610
Joined: Tue Mar 15, 2016 9:56 am

Re: Nozzle Temp Dropping

Post by Owen Sparks aka Marksman » Thu Aug 23, 2018 11:31 am

xoxu wrote:
Wed Aug 22, 2018 5:44 am
Hi,

Just to share a solution I found to solve a lot of E error (temperature error) due to the FFC cable or other in between connector/board.
https://www.thingiverse.com/thing:3059725

Just replace the full lot with a better cable, solved a lot of problem on my side (running for more than 2 weeks now full time)

Hope that help some of you guys.
Cheers
Thanks for posting that information.

Owen S.

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3DWP
Posts: 194
Joined: Wed Dec 30, 2015 4:00 pm
Location: Netherlands
Contact:

Re: Nozzle Temp Dropping

Post by 3DWP » Fri Aug 09, 2019 5:08 pm

xoxu wrote:
Wed Aug 22, 2018 5:44 am
Hi,

Just to share a solution I found to solve a lot of E error (temperature error) due to the FFC cable or other in between connector/board.
https://www.thingiverse.com/thing:3059725

Just replace the full lot with a better cable, solved a lot of problem on my side (running for more than 2 weeks now full time)

Hope that help some of you guys.
Cheers
Thanks for posting this! It fixed my problems, really nice solution. I posted this 3D printable clip to attach the ribbon cable to the filament tube: https://www.thingiverse.com/thing:3797876

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