Extruder stops heating mid print

Hi,
I've been having trouble with my extruder in the middle of prints. After a few layers, the temperature of the extruder starts to drop, and the whole print stops, saying in the log "cold extrusion prevented" and the when it reaches the "min-temp" it displays an error and kills the system. When the extruder starts dropping in temperature, there is no led red light on my Ramps 1.4 which would mean that it's trying to heat, but the light for the heat bed is still showing. When i disconnect and reconnect my printer on repetier, and try heating the extruder, the red led light for the extruder on Ramps turns on, but very dimly, and then fades away. When i switched of the power to the whole printer and then switched it back on, and then tried heating the extruder, the led light came on perfectly and repetier showed a rise in temperature. What could be going wrong? Can someone tell me if there's anything that's a problem?
Thanks:)

Comments

  • Check log if you trigger decouple rules, which would disable heaters. But lightly lid led sounds like it could also be a heardware issue. Maybe fuses triggering from overload? Ramos has polyfuses that reset when disabling power. You could check more closely in host checking what firmware tells. If firmware says outputting 60 percent and led is off it is most likely hardware. If decouple test comes first it is decouple configuration.
  • edited August 11
    Hi,
    I tried another print, and the same thing seems to happen after the same amount of time. The print suddenly stops, and these weird beeping sounds start coming from the extruder. So i hit the "emergency stop" and when I heated the extruder, it worked fine, and the temperature rose. Here's the log when the print got interupted happened:

    11:07:10.479 : N1448 M105*30
    11:07:10.492 : N1449 G0 X95.48 Y53.902 F4200*77
    11:07:11.282 : N1450 G1 X93.698 Y52.12 E130.9974 F3000*63
    11:07:11.284 : N1451 G0 X94.264 Y52.12 F4200*64
    11:07:13.019 : N1452 M105*21
    11:07:13.822 : N1453 G1 X96.046 Y53.902 E131.1064 F3000*4
    11:07:13.822 : N1454 G0 X93.352 Y60.26 F4200*64
    11:07:15.598 : echo: cold extrusion prevented
    11:07:15.599 : N1455 G1 X94.97 Y61.878 E131.2053 F3000*54
    11:07:16.390 : echo: cold extrusion prevented
    11:07:16.394 : N1456 M105*17
    11:07:16.400 : N1457 M104 T0 S0*22
    11:07:18.134 : echo: cold extrusion prevented
    11:07:18.138 : N1458 M104 T0 S250*30
    11:07:18.933 : echo: cold extrusion prevented
    11:07:18.937 : N1459 M105*30
    11:07:18.939 : N1460 G0 X94.405 Y61.878 F4200*119
    11:07:18.942 : N1461 G1 X93.352 Y60.826 E131.2697 F3000*8
    11:07:18.949 : N1462 G0 X93.352 Y61.391 F4200*123
    11:07:20.707 : echo: cold extrusion prevented
    11:07:20.710 : N1463 M104 T0 S0*17
    11:07:20.717 : N1464 M104 T0 S250*17
    11:07:21.502 : echo: cold extrusion prevented
    11:07:21.506 : N1465 G1 X93.839 Y61.878 E131.2995 F3000*13
    11:07:23.243 : N1466 M105*18
    11:07:23.243 : N1467 G0 X93.531 Y61.702 Z1.7 F4200*33
    11:07:23.247 : echo: cold extrusion prevented
    11:07:24.041 : echo: cold extrusion prevented
    11:07:24.047 : N1468 M104 T0 S0*26
    11:07:24.047 : Printing layer 8 of 10
    11:07:24.048 : N1469 G1 X93.528 Y58.385 E131.4429 F3600*5
    11:07:25.815 : N1470 M105*21
    11:07:25.815 : N1471 G1 X93.527 Y58.174 E131.452*84
    11:07:25.819 : echo: cold extrusion prevented
    11:07:26.614 : echo: cold extrusion prevented
    11:07:26.620 : N1472 G1 X93.528 Y52.853 E131.6821*96
    11:07:26.622 : echo: cold extrusion prevented
    11:07:26.622 : N1473 G1 X93.527 Y52.589 E131.6935*96
    11:07:28.351 : echo: cold extrusion prevented
    11:07:28.355 : N1474 M105*17
    11:07:28.355 : echo: cold extrusion prevented
    11:07:29.154 : echo: cold extrusion prevented
    11:07:29.158 : N1475 G1 X93.528 Y52.297 E131.7061*104
    11:07:29.162 : echo: cold extrusion prevented
    11:07:30.923 : echo: cold extrusion prevented
    11:07:30.927 : N1476 G1 X95.897 Y52.295 E131.8086*96
    11:07:30.930 : echo: cold extrusion prevented
    11:07:30.930 : N1477 G1 X96.058 Y52.294 E131.8155*103
    11:07:31.599 : echo: cold extrusion prevented
    11:07:31.603 : N1478 M105*29
    11:07:31.607 : echo: cold extrusion prevented
    11:07:33.368 : echo: cold extrusion prevented
    11:07:33.373 : N1479 G1 X100.413 Y52.295 E132.0038*92
    11:07:33.376 : echo: cold extrusion prevented
    11:07:34.167 : echo: cold extrusion prevented
    11:07:34.172 : N1480 M105*26
    11:07:34.172 : N1481 G1 X100.83 Y52.294 E132.0219*102
    11:07:34.179 : echo: cold extrusion prevented
    11:07:35.912 : echo: cold extrusion prevented
    11:07:35.912 : N1482 G1 X104.468 Y52.297 E132.1792*84
    11:07:35.920 : echo: cold extrusion prevented
    11:07:35.924 : N1483 G1 X104.471 Y55.614 E132.3226*93
    11:07:39.054 : echo: cold extrusion prevented
    11:07:39.059 : N1484 M105*30
    11:07:39.062 : echo: cold extrusion prevented
    11:07:40.730 : echo: cold extrusion prevented
    11:07:40.734 : N1485 M105*31
    11:07:40.734 : N1486 M107 P0*94
    11:07:40.738 : echo: cold extrusion prevented
    11:07:41.532 : echo: cold extrusion prevented
    11:07:41.536 : N1487 G1 X104.472 Y55.825 E132.3317*85
    11:07:41.539 : N1488 G1 X104.471 Y61.146 E132.5618*94
    11:07:41.542 : N1489 G1 X104.472 Y61.41 E132.5732*99
    11:07:41.543 : echo: cold extrusion prevented
    11:07:42.855 : echo: cold extrusion prevented
    11:07:42.860 : N1490 G1 X104.471 Y61.702 E132.5858*91
    11:07:42.863 : echo: cold extrusion prevented
    11:07:43.654 : echo: cold extrusion prevented
    11:07:43.658 : N1491 M105*26
    11:07:43.662 : echo: cold extrusion prevented
    11:07:44.526 : echo: cold extrusion prevented
    11:07:44.535 : echo: cold extrusion prevented
    11:07:44.535 : N1492 G1 X102.102 Y61.704 E132.6882*92
    11:07:45.198 : echo: cold extrusion prevented
    11:07:45.202 : N1493 G1 X101.941 Y61.705 E132.6952*92
    11:07:45.210 : echo: cold extrusion prevented
    11:07:45.211 : N1494 G1 X97.586 Y61.704 E132.8835*109
    11:07:46.780 : echo: cold extrusion prevented
    11:07:46.788 : echo: cold extrusion prevented
    11:07:46.788 : N1495 M105*30
    11:07:46.849 : echo: cold extrusion prevented
    11:07:46.857 : N1496 G1 X97.169 Y61.705 E132.9015*96
    11:07:46.861 : echo: cold extrusion prevented
    11:07:48.705 : echo: cold extrusion prevented
    11:07:48.715 : N1497 G1 X93.531 Y61.702 E133.0588*98
    11:07:48.717 : N1498 G0 X93.131 Y62.101 F4200*113
    11:07:48.717 : echo: cold extrusion prevented
    11:07:48.872 : echo: cold extrusion prevented
    11:07:48.881 : echo: cold extrusion prevented
    11:07:48.881 : N1499 G1 X93.127 Y52.587 E133.4702 F3600*7
    11:07:49.286 : echo: cold extrusion prevented
    11:07:49.290 : N1500 G1 X93.13 Y51.898 E133.5*103
    11:07:50.561 : N1501 M105*18
    11:07:50.564 : echo: cold extrusion prevented
    11:07:50.610 : echo: cold extrusion prevented
    11:07:50.618 : echo: cold extrusion prevented
    11:07:50.618 : N1502 G1 X95.896 Y51.895 E133.6196*102
    11:07:52.068 : echo: cold extrusion prevented
    11:07:52.072 : N1503 G1 X96.055 Y51.894 E133.6265*109
    11:07:52.080 : echo: cold extrusion prevented
    11:07:52.085 : N1504 G1 X104.868 Y51.898 E134.0075*88
    11:07:52.207 : echo: cold extrusion prevented
    11:07:52.211 : N1505 G1 X104.872 Y61.412 E134.4189*89
    11:07:52.215 : echo: cold extrusion prevented
    11:07:53.887 : echo: cold extrusion prevented
    11:07:53.890 : N1506 M105*21
    11:07:53.894 : echo: cold extrusion prevented
    11:07:55.476 : echo: cold extrusion prevented
    11:07:55.480 : echo: cold extrusion prevented
    11:07:55.480 : N1507 M105*20
    11:07:55.480 : N1508 G1 X104.869 Y62.101 E134.4487*81
    11:07:55.545 : echo: cold extrusion prevented
    11:07:55.556 : N1509 G1 X102.103 Y62.104 E134.5683*81
    11:07:55.564 : echo: cold extrusion prevented
    11:07:55.565 : N1510 G1 X101.944 Y62.105 E134.5752*93
    11:07:57.401 : echo: cold extrusion prevented
    11:07:57.409 : echo: cold extrusion prevented
    11:07:57.409 : N1511 G1 X93.131 Y62.101 E134.9562*101
    11:07:57.569 : echo: cold extrusion prevented
    11:07:57.573 : N1512 G0 X93.718 Y61.562 F4200*125
    11:07:57.577 : echo: cold extrusion prevented
    11:07:57.982 : echo: cold extrusion prevented
    11:07:57.987 : echo: cold extrusion prevented
    11:07:57.987 : N1513 G1 X102.843 Y52.436 E135.5142 F3000*62
    11:07:59.252 : echo: cold extrusion prevented
    11:07:59.264 : N1514 M104 T0 S250*23
    11:07:59.264 : N1515 M105*23
    11:07:59.310 : N1516 G0 X102.278 Y52.436 F4200*67
    11:07:59.316 : echo: cold extrusion prevented
    11:08:00.760 : echo: cold extrusion prevented
    11:08:00.776 : N1517 M104 T0 S0*19
    11:08:00.778 : N1518 G1 X93.67 Y61.044 E136.0406 F3000*48
    11:08:00.907 : N1519 G0 X93.67 Y60.478 F4200*66
    11:08:00.908 : N1520 G1 X101.712 Y52.436 E136.5323 F3000*48
    11:08:00.911 : echo: cold extrusion prevented
    11:08:02.567 : echo: cold extrusion prevented
    11:08:02.571 : N1521 M105*16
    11:08:03.357 : echo: cold extrusion prevented
    11:08:03.357 : N1522 G0 X101.146 Y52.436 F4200*73
    11:08:07.072 : echo: cold extrusion prevented
    11:08:07.077 : N1523 M105*18
    11:08:07.077 : N1524 G1 X93.67 Y59.913 E136.9895 F3000*48
    11:08:07.719 : N1525 M105*20
    11:08:07.721 : N1526 G0 X93.669 Y59.348 F4200*120
    11:08:07.723 : echo: cold extrusion prevented
    11:08:09.116 : echo: cold extrusion prevented
    11:08:09.127 : N1527 G1 X100.58 Y52.436 E137.4121 F3000*15
    11:08:09.128 : N1528 G0 X100.015 Y52.436 F4200*69
    11:08:09.178 : echo: cold extrusion prevented
    11:08:09.178 : N1529 G1 X93.669 Y58.782 E137.8002 F3000*4
    11:08:12.585 : echo: cold extrusion prevented
    11:08:12.590 : N1530 M105*16
    11:08:15.440 : Printer reset detected - initalizing

    What was worrying me most was the beeping sound that gradually gained a higher frequency. Any idea if that's a sign of anything?


  • sorry forgot to mention that the led fading did not happen this time when i hit the emergency stop. I did not need to switch on and off the power to get the extruder heating again.
  • I see mny M104 S0 in your log. This disables extruder so no wonder that it gets cold and stops guess is that your slicer setting has 0 as target temperature.
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