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Hot end Issues

Posted by trilby

trilby

Hot end Issues
February 08, 2014 10:53AM

Registered: 10 years ago
Posts: 19

Hello

I have just started having issues with my hot end thermistor not giving a reading (-274) after a week of printing. Can some one please tell me the expected values from it at room temperature.

This should hopefully help me diagnose if it is a wiring or thermisor fault (and pray that its not the duet thats dead).

Thanks

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dc42

Re: Hot end Issues
February 08, 2014 11:03AM

Registered: 10 years ago
Posts: 14,672

The thermistor should be 100K @ 25C. I had this kind of problem too, it turned out to be a problem with the 6-pin connector.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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TMD_RS436

Re: Hot end Issues
February 08, 2014 11:08AM

Registered: 10 years ago
Posts: 119

Or maybe one of the crimps have come off the thermistor.

Paul

RS Ormerod No 436

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trilby

Re: Hot end Issues
February 08, 2014 11:12AM

Registered: 10 years ago
Posts: 19

I have done a visual check of the wires and checked the connector block so now it is on to checking continuity.

Well after i have taken a break for a while.

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SlinBin

Re: Hot end Issues
February 08, 2014 05:33PM

Registered: 10 years ago
Posts: 46

mine did just that (after 1 week off printing), at first I checked the connections then checked the thermistor and took the wiring apart, but could not find any problems. put it back together and then I worked again.
either TMDRS336 is right or it was pure luck on my side, properly both.
been printing ever since....