# E1 Err: MINTEMP PRINTER HALTED **URL:** \ **Category:** LulzBot TAZ\ **Created:** [February 22, 2019, 11:56pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528 "2019-02-22T23:56:11Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![kek](https://avatars.discourse-cdn.com/v4/letter/k/a88e57/32.png) [@kek](https://forum.lulzbot.com/u/kek)\ **Post date:** [February 22, 2019, 11:56pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/1 "2019-02-22T23:56:11Z")
The REAL problem is that I removed the dual head extruder and replaced it with the single head extruder. I can’t connect via Cura - it says it can’t find the correct baud rate. Is there another way to flash it to the Single Extruder firmware? It is possible that the thermister for the Single Extruder is bad, but isn’t there a way to at least connect to the machine? Kind regards, Randy ---
**Author:** ![JoeBowler300](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JoeBowler300](https://forum.lulzbot.com/u/JoeBowler300)\ **Post date:** [February 23, 2019, 12:07am UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/2 "2019-02-23T00:07:35Z")
Have you tried putting the dual head back on, flash it for the single head and put the single head back on? ---
**Author:** ![kcchen\_00](https://avatars.discourse-cdn.com/v4/letter/k/9dc877/32.png) [@kcchen\_00](https://forum.lulzbot.com/u/kcchen_00)\ **Post date:** [February 23, 2019, 12:15am UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/3 "2019-02-23T00:15:21Z")
The baudrate may be hardcoded to 250000. ---
**Author:** ![kek](https://avatars.discourse-cdn.com/v4/letter/k/a88e57/32.png) [@kek](https://forum.lulzbot.com/u/kek)\ **Post date:** [February 24, 2019, 12:07pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/4 "2019-02-24T12:07:46Z")
Can’t reinstall dual head: sent it back due to warranty issues. Also tried specifying 250000 baud rate with same results. Can the TAZ 5 be flashed via the LCD (since it has a card reader)? Is there another way other than via Cura? ---
**Author:** ![JoeBowler300](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JoeBowler300](https://forum.lulzbot.com/u/JoeBowler300)\ **Post date:** [February 24, 2019, 1:53pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/5 "2019-02-24T13:53:26Z")
Try adding a Custom FDM Printer and in Machine Settings set the Communication speed to Auto ---
**Author:** ![kek](https://avatars.discourse-cdn.com/v4/letter/k/a88e57/32.png) [@kek](https://forum.lulzbot.com/u/kek)\ **Post date:** [February 25, 2019, 12:39pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/6 "2019-02-25T12:39:54Z")
I’ll try that today. Is there any way to flash the unit without a print head installed? ---
**Author:** ![kek](https://avatars.discourse-cdn.com/v4/letter/k/a88e57/32.png) [@kek](https://forum.lulzbot.com/u/kek)\ **Post date:** [February 25, 2019, 3:42pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/7 "2019-02-25T15:42:13Z")
tried the Custom Printer, but couldn’t connect: “Baud rate detection failed” This is the only result after trying everything. Interestingly enough, when I use Simplify3D, it DOES detect the unit - but can’t upload firmware. I get these messages via Simplify3D console: READ: Error:MINTEMP triggered, system stopped! Heater\_ID: 0 READ: Error:Printer halted. kill() called! Once again, is there any way to upload firmware without using Cura? ---
**Author:** ![kek](https://avatars.discourse-cdn.com/v4/letter/k/a88e57/32.png) [@kek](https://forum.lulzbot.com/u/kek)\ **Post date:** [February 25, 2019, 3:48pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/8 "2019-02-25T15:48:00Z")
Forgot to add that this command keeps getting issued: SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 SENT: M105 What is M105 and what is Simplify3D expecting as a return? Kind regards, Randy ---
**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:** [February 25, 2019, 4:08pm UTC](https://forum.lulzbot.com/t/e1-err-mintemp-printer-halted/6528/9 "2019-02-25T16:08:50Z")
All you need is a 100K ohm resistor across two pins on the second connector. See: [https://forum.lulzbot.com/t/dual-extruder-dummy-plug-for-second-connector/5946/1](https://forum.lulzbot.com/t/dual-extruder-dummy-plug-for-second-connector/5946/1)