I went through the process of checking to see if the switch was tight and found it was. I then checked on the switch and found that the reed switch was not working effectively. It needed to be bent further back so it reacted when the filament was put through the eyelet. I did this very carefully using two of the hex drivers and it has been working like a dream ever since.
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Hi there,
is this really the only solution? Even if this screws on the switch were not loose? Because i have the same problems, that the message “filament runout recovery” appears so often.
I tried to connect my PC via USB with the Snapmaker, but Luban wasnt able to find the serial port.
So i couldnt check the M-Codes. Is there any reason for not finding the port? Btw it works with others PC`s (stationary Desktop PC) but of course not with the one (Notebook) that i want to use for it.
@zwecke version of Luban? - have you tried the latest from forum?
The switch is normally open, you could check if the problem comes from the electronic or the switch itself, - by unplugging the switch from the pcb (I am no snapmaker staff).
Do you hear the click? It may be you will need to very slightly bend the little curve… I don’t work for snapmaker ask snapmaker support to avoid voiding your warranty
I have not been contacted yet about the warranty.
Hi,
is it possible to set the M412 S0 as standard setting? Because now every time, even before it start the printing, it comes up with the “filament reload recovery”-message. During night i switch off my machine, but if i switch it on, the setting is (of course) back at M412 S1. Therefore i have to connect every time a pc to the machine - thats annoying!
With the side and fan removed, when you insert filament do you hear a click?
Did you save your change with M500 command?
I used the M500 command, but when i turn it off and on again, it is still the same at M412 S1 - so it still check the filament runout. 
Yes i hear the click
Was your pc with USB connected to your snapmaker?
Yes i downloaded the newest version of luban and connected the pc via usb with my snapmaker.
I’m having the same exact problem. Running firmware 1.10 and Luban 3.8. Followed the instructions given by staff when I reported the issue, i.e., check if switch is loose and move switch toward filament. Switch was not loose and tried to move switch closer by loosening screws and moving switch. When I place filament in, I can hear the switch click. However, I still keep getting filament load error. Ran M119, which showed “filament: open” I had to turn off filament detection in order to print. This is not a permanent solution as I have to move my computer to another room to connect via USB to turn off filament detection. Entered M500 to save to EEPROM, but not sure it worked to make it permanent for now.
I have the same problem on my A250 Snapmaker 2, the error occur randomly, in two minutes or in thirty minutes. T tried to check the switch fixing and appear to be good.
Would be interesting to have a delay (programmable?) on the switch, in order to avoid undesired stop due to a brief pulse.
Firmware is V1.10.00
Controller V3.1.8
Thank You.
Stefano
I’m having the same problem with mine.
While the filament is loading, there is a ticking sound coming from inside.
Is the switch not making good contact with the filament?
Firmware is V1.10.1
So for me it is still the problem, filament runout recovery appears from th beginning of a print. I have to turn off the sensor with M412 S0, otherwise it would never start a print. If it is turned off, it prints fine.
But still annoying to use the command every time i turn on the machine.
I seem to be having a similar or same issue. Can’t really figure out when the runoff detection will falsely alert or not. Sometimes can do an 12-24 hour print just fine. Sometimes won’t make it 5 minutes. Normally just have to press the load button and problem goes away, at least until it comes back. Running latest firmware and software. M119 does show the runout being triggered. Strongly considering using Cura and adding the runout disable command at the beginning of all prints. I did follow the videos without any change in behavior, although I might try that again. And yes, I hear/feel the click.
I’m going to try this now. Been fighting my way through Google and this Load Filament since last weekend (April 11th to today April 17th with no solution). Using the SM white and black PLA from the full kit i purchased. That bottom white sleeve around print head cooked off already too.
2.0 a350 here, Never had an issue, then I ran a print in which the filament MIGHT run out. Well it did, and triggered the runout sensor.
Two things happened.
-
The end of my filament got stuck. When you open the filament feed hatch, you can see a gap between the top of the module, and the beginning of the feed tube. It was a little piece stuck about halfway down the feed tube, extending down to the nozzle.
I first tried using the unload function. Nothing.
Then I tried using tweezers to pull/push the filament out. Not a single budge.
Then I cut the filament at the gear, and easily pulled out the piece going into the nozzle.
Then I fought with the last tiny piece that was from halfway down the feed tube, to the end of the tube where it would meet the gear.
Ended up sticking a tiny allen wrench backwards through the feed from the gear. Finally popped loose. -
I now have the same issue as everyone else ^^^
Fully up to date Luban and SM.