hot end gone wild - Sorta SOLVED

Print started at: 09:57:59
SENDING:M105
ok T:230.1 /230.0 B:109.5 /110.0 @:57
Error:0
: Extruder switched off. MAXTEMP triggered !
Error:Printer stopped deu to errors. Fix the error and use M999 to restart!. (Temperature is reset. Set it before restarting)
Printer stopped deu to errors. Fix the error and use M999 to restart!. (Temperature is reset. Set it before restarting)
Printer stopped deu to errors. Fix the error and use M999 to restart!. (Temperature is reset. Set it before restarting)
Printer stopped deu to errors. Fix the error and use M999 to restart!. (Temperature is reset. Set it before restarting)

anyone know why the hot end went up and up??

temp fluctuation happened again… is repeatable…

\now the machine just stops and no errors…



382168 lines
18662.96457 mm of filament used in this print
The print goes:

  • from 3.41 mm to 186.93 mm in X and is 183.52 mm wide
  • from 8.53 mm to 192.52 mm in Y and is 183.99 mm deep
  • from 0.00 mm to 49.50 mm in Z and is 49.50 mm high
    Estimated duration: 178 layers, 4:33:31
    Setting hotend temperature to 230.000000 degrees Celsius.
    Setting bed temperature to 110.000000 degrees Celsius.
    SENDING:M105
    ok T:233.2 /230.0 B:110.8 /110.0 @:32
    Print started at: 12:53:21
    SENDING:M105
    ok T:230.1 /230.0 B:109.3 /110.0 @:58
    SENDING:M105
    ok T:230.0 /230.0 B:109.4 /110.0 @:61
    SENDING:M105
    ok T:224.7 /230.0 B:109.5 /110.0 @:127
    SENDING:M105
    ok T:221.3 /230.0 B:109.8 /110.0 @:127
    SENDING:M105
    ok T:224.5 /230.0 B:109.3 /110.0 @:110
    SENDING:M105
    ok T:227.6 /230.0 B:110.8 /110.0 @:94
    SENDING:M105
    ok T:229.4 /230.0 B:110.2 /110.0 @:75
    SENDING:M105
    ok T:232.2 /230.0 B:109.9 /110.0 @:46
    SENDING:M105
    ok T:231.7 /230.0 B:111.0 /110.0 @:59
    SENDING:M105
    ok T:231.1 /230.0 B:110.5 /110.0 @:66
    Setting hotend temperature to 230.000000 degrees Celsius.
    SENDING:M105
    ok T:229.1 /230.0 B:111.2 /110.0 @:87
    SENDING:M105
    ok T:228.9 /230.0 B:109.8 /110.0 @:89
    SENDING:M105
    ok T:229.5 /230.0 B:110.2 /110.0 @:78
    SENDING:M105
    ok T:229.5 /230.0 B:111.2 /110.0 @:83
    Setting bed temperature to 110.000000 degrees Celsius.
    SENDING:M105
    ok T:230.8 /230.0 B:109.6 /110.0 @:60
    SENDING:M105
    ok T:229.1 /230.0 B:110.0 /110.0 @:115
    SENDING:M105
    ok T:230.2 /230.0 B:111.3 /110.0 @:63
    SENDING:M105
    ok T:227.9 /230.0 B:110.1 /110.0 @:0
    SENDING:M105
    ok T:236.0 /230.0 B:110.1 /110.0 @:0
    Setting hotend temperature to 230.000000 degrees Celsius.
    SENDING:M105
    ok T:232.6 /230.0 B:110.1 /110.0 @:3
    SENDING:M105
    ok T:230.2 /230.0 B:109.9 /110.0 @:30
    SENDING:M105
    ok T:226.9 /230.0 B:110.3 /110.0 @:73
    SENDING:M105
    ok T:225.1 /230.0 B:110.1 /110.0 @:71
    SENDING:M105
    ok T:225.6 /230.0 B:110.0 /110.0 @:77
    Print paused at: 13:32:39
    Setting bed temperature to 0.000000 degrees Celsius.
    Setting hotend temperature to 0.000000 degrees Celsius.

reloaded fware >

lasted 10 secs… max temp stopped

Connecting…
start
Printer is now online.
echo: External Reset
Marlin 1.0.0
echo: Last Updated: 2012-11-26 | Author: LulzBot
Compiled: Jul 17 2013
echo: Free Memory: 4717 PlannerBufferBytes: 1232
echo:Using Default settings:
echo:SD card ok
Error:0
: Extruder switched off. MAXTEMP triggered !
Error:Printer stopped deu to errors. Fix the error and use M999 to restart!. (Temperature is reset. Set it before restarting)

ok… re-did the PIDS… and seems to be behaving 1 hour in…

I would check all the wires and connections to the thermocouple…maybe something is loose.

I would definitely check the thermistor, from the heater block, through the crimps, the connectors to the wiring harness and beyond. For a Max temp error to occur it’s going to be related to the thermistor.

With the printer powered off and disconnected from the computer disconnect the hot end from the wiring harness on the extruder. Check the resistance of the two orange wires. If the thermistor is reading correctly, you should be able to detect a resistance of approximately 100K at room temperature (±10k or so). Make sure that you can duplicate the reading. You will also want to make sure that the thermistor wiring is still insulated and not touching the side of the heater block or hot end. The thermistor is replaceable and requires the use of a crimped connection as the hot end can potentially get hot enough to cause soldered connections to fail. A small guide can be found here: https://www.lulzbot.com/support/replacing-your-budaschnozzle-heater-resistor-or-thermistor.