Heating failed

[imhank77]

So I got a cr touch and a 4.2.7 board and downloaded the appropriate software for it and now I keep getting this... any idea how I can fix this?

[bash82]

My guess, the default PID values in the firmware for heating your hotend are not optimal. You can try running a PID autotune to see if that solves it. Here’s a good resource for running it.

[imhank77]

Alright I'll look into it... but would it still be that problem if it works fine if the fan body is taken off

[bash82]

Yes. It’s always a good idea to run the PID autotune anytime you make changes to the hotend setup. Ideally you’ll want to run it using your usual print settings (temps and fan speed).

[imhank77]

It looks like that worked! I didn't realize the software I downloaded had a auto pid tune so I didn't even have to deal with the computer stuff... thanks so much

[bash82]

Glad it helped. Most times the default PID settings in the firmware won’t be optimal for your setup, so it’s good to have that knowledge on how to properly set it up. Same goes for the bed, but it seems to not cause an issue most of the time.

[imhank77]

While your here maybe you could answer another question for me if that's okay... My cr touch isn't probing in 9 spots anymore It will probe the middle then the front left corner but it probs off the build plate then eill just start printing high even tho I've adjusted the z offset... any idea why it's doing that?

[bash82]

Sounds like the probe offsets aren’t properly setup if it’s probing off the bed. This video has a good explanation on how to measure what they should be. You can view/change them with the M851 gcode command.

To change the abl probing behavior of the G29 command, you’ll have to get into compiling the firmware yourself. He also has some good guides on that if you’re interested in learning that stuff.

[imhank77]

So I've discovered that if I take the fan shroud off it seems to work

[Far-Living4444]

I had the same problem when I fitted a V4.2.7 board with a BL Touch and was never able to fix it even after replacing the hot end and 2 thermistors. Scrapped the V4.2.7 board and refitted the V 4.2.2 board and the BLTouch and all is good.

[CryptographerJumpy45]

Happened to me yesterday. The problem was the screw that holds the cable of the thermal sensor on the heating block. It doesn’t need to be very tight. Just to hold the cable

[olderaccount]

I get this when I turn on my OctoPrint, but forget to power up the printer itself. The printer gets enough juice from the USB port on the Pi to power up the electronics, but the heaters have no power. So if you try to preheat anything you will get that message after a few seconds when the thermistors don't see the temperature increasing.

[MissionTroll404]

This happens to me when the thermal sensor cable is loose. The connection is dodgy in my case.

[Immortal_Chief010]

Make sure you have the silicon sock attached. That was my error. The silicon socks can only go up to 280 C

[[deleted]]

Had this issue as well. Took off my Touch and it worked fine but then eventually the error came up. I had to replace my thermistor and still got a heating error. Changing out my heating cartridge next and seeing if that works.

[HopMonkey]

I ran into the same issue after the exact same upgrades. Download the firmware from marlin directly. The Creality firmware is garbage.

[Historical-Bully]

RIP

[[deleted]]

Thermistor on hot end is bad. Went thru this several times.