Unanswered e3d hot end wont turn off?

I installed a e3d v6 on my r1+ a while ago, everything has been working fine. Today I go to print and the hot end will just heat up, regardless of the temp (i.e. I have the temp set to 208, it goes up to 288 where it errors w/ max temp). Also, the hot end heats up regardless if I have the tip turned on via matter control (i.e. as soon as I turn the power on, it starts heating up). I checked the the voltage, the r1+ is feeding a constant 12V to the hot end as soon as its turned on...Im assuming it should not do this (never checked before) and should only be providing the voltage when I have it turn on and the voltage should stop when the temp reaches the temperature desired. Its basically like the R1 is stuck in the "on" position w/ the hot end.

Thoughts?

 

Check where the hotend wires are plugged in and make sure you didn't get the hotend fan and hotend cartridge wire plugins swapped?

 

or when it hits 208C does the fan turn off? haha...wire switch sounds logical.

 

Nope, definitely hooked up right there...pretty obvious which wires are which because of the awg. Just tested though, fan doesnt turn off when it goes past 208.

 

In that case, I'd suspect that somewhere in the RAMPS the bit that controls the current to the hotend is stuck in the "on" state. So the RAMPS will need replacing.

 

Kind of my guess as well since this one was working and then just stopped. Anyone know if this is generally covered under warranty?

 

Depends, is the printer still within the 6-months warranty? If so, go on the online parts request form and fill everything out for the replacement Ramps with a link to this thread in the comment portions of the form.

https://robo3d.com/warranty-replacement/

 

While waiting for the probable bad board, just for kicks unplug the thermister from the board and see if it heats up without it. Mostly I'm just curious.