<p>I bought an Ender 3 v2 off a friend because he wanted to upgrade and I wanted to try getting into 3D printing (slightly relevant). He had a few upgrades on it, including a BLTouch.</p>
<p>I printed 2 prints successfully, but then it looked like the custom fan situation was dropping into the print layers and causing a lot of issues. I started taking it off, before I realized I'd need to probably 3D print a new fan solution (still slightly relevant).</p>
<p>After detaching the primary fan and BLTouch, I re-attached them.</p>
<p>My issue is that the BLTouch now probes in mid air without progressing down to the bed to probe the bed. I found similar issues on various posts, such as <a href="https://www.reddit.com/r/ender3/comments/qozx4n/bltouch_triggering_mid_air_skr_mini_e3_v2/" rel="nofollow noreferrer">this one</a>,
but the issues over there seemed to be new installation and issues with configuring it correctly.</p>
<p>This BLTouch was already working, I just detached it from the machine and reattached. I didn't touch any firmware or code anywhere.</p>

CC BY-SA 4.0
2024-07-28T20:52:55.647Z
Hi, welcome to 3DPrinting.SE! Could you post a photo of the hotend with the custom fan solution? Also please check, did taking off the fan perhaps damage the wiring?
0scar
CC BY-SA 4.0
2024-07-28T21:36:02.960Z
Please read [BLTouch problem with pin deployment](https://3dprinting.stackexchange.com/questions/23139/bltouch-problem-with-pin-deployment), this is a similar issue hinting to cable problems.
0scar
CC BY-SA 4.0
2024-07-28T22:19:41.720Z
Thank you so much!!
That was it - a wire got pulled out.
Doragon
<creality-ender-3><bltouch><automatic-bed-leveling>
BLTouch probing in mid air
Doragon
# BLTouch probing in mid air

(Asked by: username_0 on 2024-07-28)

I bought an Ender 3 v2 off a friend because he wanted to upgrade and I wanted to try getting into 3D printing (slightly relevant). He had a few upgrades on it, including a BLTouch.

I printed 2 prints successfully, but then it looked like the custom fan situation was dropping into the print layers and causing a lot of issues. I started taking it off, before I realized I'd need to probably 3D print a new fan solution (still slightly relevant).

After detaching the primary fan and BLTouch, I re-attached them.

My issue is that the BLTouch now probes in mid air without progressing down to the bed to probe the bed. I found similar issues on various posts, such as [this one](https://www.reddit.com/r/ender3/comments/qozx4n/bltouch_triggering_mid_air_skr_mini_e3_v2/),
but the issues over there seemed to be new installation and issues with configuring it correctly.

This BLTouch was already working, I just detached it from the machine and reattached. I didn't touch any firmware or code anywhere.

**Tags:** creality-ender-3, bltouch, automatic-bed-leveling

> **Comments:**
> **username_1**: Hi, welcome to 3DPrinting.SE! Could you post a photo of the hotend with the custom fan solution? Also please check, did taking off the fan perhaps damage the wiring?  
> **username_1**: Please read [BLTouch problem with pin deployment](https://3dprinting.stackexchange.com/questions/23139/bltouch-problem-with-pin-deployment), this is a similar issue hinting to cable problems.  
> **username_0**: Thank you so much!! That was it - a wire got pulled out.  

---

## 0 answers

