HE280 question

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barry99705
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HE280 question

Post by barry99705 » Sun Mar 26, 2017 7:17 pm

Got home from MRRF Sunday this morning at 1:30-sh am. Woke up and upgraded my Max's hot end. It's all wired up and seems to be working, but is the hot end fan supposed to run all the time?
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Re: HE280 question

Post by Dale Eason » Sun Mar 26, 2017 7:49 pm

Yes. They needed an extra wire for the sensor and so stole it from the fan and then connected the fan up to power so that it would always run.
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Re: HE280 question

Post by barry99705 » Sun Mar 26, 2017 8:14 pm

Cool! Now I just need to figure out how to make it stop vibrating... :|
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Re: HE280 question

Post by Mac The Knife » Mon Mar 27, 2017 7:52 am

You can run an extra wire and have it controlled,,,, Here's Mhackney's post viewtopic.php?f=42&t=10836&start=75
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Re: HE280 question

Post by barry99705 » Mon Mar 27, 2017 11:23 am

I'd have to take it apart again! :shock:
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Re: HE280 question

Post by Mac The Knife » Mon Mar 27, 2017 12:06 pm

If you had done your homework,,,,,, ;)
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Re: HE280 question

Post by barry99705 » Mon Mar 27, 2017 6:54 pm

Swapped out the fan with one of the others. Still whistles, but it's not vibrating, I can handle that. With the door of the enclosure closed it's not too bad.
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Re: HE280 question

Post by barry99705 » Tue Mar 28, 2017 11:30 am

Wow this thing jams easy!
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Re: HE280 question

Post by Dale Eason » Tue Mar 28, 2017 11:40 am

That usually means one of two things. You have the retraction too big when using abs or you did not get the bowden tube seated properly. Usually it is the latter.

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Re: HE280 question

Post by barry99705 » Tue Mar 28, 2017 3:25 pm

Yea, I think it was the bowden. I have a flying extruder, and the bowden I had with the E3d before was probably an inch too short, so it was pulling on the hot end. I cut a new piece and installed it after I got the clog out. I even used Andy's trick of unscrewing the bowden connector a couple turns, insert the tube, then tighten it back. The new tube should help I think.
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Re: HE280 question

Post by barry99705 » Thu Mar 30, 2017 10:22 pm

I'm starting to not like this hot end....

Code: Select all

22:19:08.984 : Error:One heater seems decoupled from thermistor - disabling all for safety!
22:19:08.984 : Error:Temp. raised to slow. Rise = -1.93 after 46027 ms
22:19:25.508 : extruder 0: working
22:19:25.508 : heated bed: working
22:19:25.508 : Error:Printer set into dry run mode until restart!
22:19:27.686 : extruder 0: working
22:19:27.686 : heated bed: working
22:19:27.689 : Error:Printer set into dry run mode until restart!
22:19:28.170 : extruder 0: working
22:19:28.170 : heated bed: working
22:19:28.174 : Error:Printer set into dry run mode until restart!
22:19:50.064 : extruder 0: working
22:19:50.064 : heated bed: working
22:19:50.069 : Error:Printer set into dry run mode until restart!
22:19:50.069 : extruder 0: working
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thechewiestbacca
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Re: HE280 question

Post by thechewiestbacca » Thu Mar 30, 2017 10:44 pm

Looks like a blown Thermal Safety Fuse. That happened to me, and that's the same error message I got

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Re: HE280 question

Post by barry99705 » Fri Mar 31, 2017 7:30 am

I can reset the printer and it will work again though. I printed the whip clip Steve posted on repables just to make sure it wasn't a temp disconnect with the wires. It printed just fine. I tried printing the part that it errored out on, and it did it again, at layer 8 of 23. Could it be those janky crimps working loose when they get hot?
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Re: HE280 question

Post by barry99705 » Fri Mar 31, 2017 6:15 pm

https://goo.gl/photos/yj4c94gUPjmen4Nt7
Seems to be dieing off around the same place. Printed from the pc and from sd card, so not the connection between. Getting DEF for both temps. I've resliced it with each version, so I don't think it's the gcode.
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Re: HE280 question

Post by barry99705 » Sat Apr 01, 2017 1:47 pm

Took the whole thing apart and recrimped everything. Made it to layer 12 this time, but did the same thing.

Code: Select all

13:39:40.747 : Printing layer 12 of 34
13:43:47.506 : Error:One heater seems decoupled from thermistor - disabling all for safety!
13:43:47.507 : Error:Temp. raised to slow. Rise = -2.18 after 46027 ms


Can the fuses be intermittent?
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Re: HE280 question

Post by barry99705 » Mon Apr 03, 2017 8:22 pm

Turns out, the hotend is very susceptible to the part fans. I'm using the same effector as my e3d which has 3 built in axial fans. I think the new hotend sticks down farther than the e3d did, so it's right in the path of the cooling air. Watching the temperature graph, when the fans kicked on, it would drop almost 15 degrees, and then trip the firmware.
Never do anything you don't want to have to explain to the paramedics.

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