# TAZ PRO Hotend 2 Thermal Runaway Printer Halted Please Reset **URL:** \ **Category:** Uncategorized\ **Created:** [April 6, 2020, 12:04am UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239 "2020-04-06T00:04:29Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![stevejsp](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@stevejsp](https://forum.lulzbot.com/u/stevejsp)\ **Post date:** [April 6, 2020, 12:04am UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/1 "2020-04-06T00:04:29Z")
First time I got this error. It seems to be bricked now. How do I reset it? It just powers up gives this message and recycles power. The weird thing is I was only using extruder 1. Hotend 2 never should have called for heat. ---
**Author:** ![stevejsp](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@stevejsp](https://forum.lulzbot.com/u/stevejsp)\ **Post date:** [April 6, 2020, 1:21am UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/2 "2020-04-06T01:21:25Z")
Please. Someone knows something. Help me get this thing unbricked! I need to crank out COVID PPE. ---
**Author:** ![stevejsp](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@stevejsp](https://forum.lulzbot.com/u/stevejsp)\ **Post date:** [April 6, 2020, 3:39pm UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/3 "2020-04-06T15:39:52Z")
Still bricked here. I try connecting to the printer in Cura but the serial connection times out due to the power recycling I think. I put in a support ticket and tried the phone line but they want to seem to talk now. ---
**Author:** ![b-morgan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/b-morgan/32/11517_2.png) [@b-morgan](https://forum.lulzbot.com/u/b-morgan)\ **Post date:** [April 6, 2020, 5:09pm UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/4 "2020-04-06T17:09:13Z")
LulzBot support is going to be your best bet. There’s aren’t a lot of TAZ PRO’s in the wild yet. The only thing I can suggest is to reflash the firmware. The documentation that came with the printer should have E-steps and Z-offset settings, or you can attempt to retrieve them from the LCD on the printer. ---
**Author:** ![JoeBowler300](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JoeBowler300](https://forum.lulzbot.com/u/JoeBowler300)\ **Post date:** [April 6, 2020, 6:19pm UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/5 "2020-04-06T18:19:23Z")
Them and the obvious check your wire connections, especially to the thermistors. ---
**Author:** ![stevejsp](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@stevejsp](https://forum.lulzbot.com/u/stevejsp)\ **Post date:** [April 6, 2020, 10:52pm UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/6 "2020-04-06T22:52:56Z")
Thanks for the replies. It was the thermistor 2 wire. ON TAZ PRO the wires to extruder 2 slam the carriage. The cooling hood also crashes against wiper 2 during bed leveling or printing in that corner. I removed wiper 2. Troubleshooting steps -Open side door -take picture of wires -Remove thermistor#1 wire (orange) Check resistance to ground lug inside case: got 112K ohms To remove the connector from board there is a small lock on one side, center of plug, push it toward the wire and gently unplug. If you unlock it correctly it removes easily. -Check thermistor 2. Got 1.1 ohms. I suspect a shorted pinched wire. For now I just removed thermistor 2 wire and it is running again. I do not want to tear it apart until after these parts get printed. ---
**Author:** ![stevejsp](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@stevejsp](https://forum.lulzbot.com/u/stevejsp)\ **Post date:** [April 6, 2020, 10:53pm UTC](https://forum.lulzbot.com/t/taz-pro-hotend-2-thermal-runaway-printer-halted-please-reset/21239/7 "2020-04-06T22:53:31Z")
[https://ohai.lulzbot.com/project/control-box-assembly/quiver/](https://ohai.lulzbot.com/project/control-box-assembly/quiver/)