I’m having a different issue. I am printing some fidget spinners which I have printed fine before but today some of them melted/warped during the print so they are useless. I started another batch and noticed that the chamber fan wasn’t on and the internal chamber temp was 42c and climbing.
This is odd because normally I am turning my chamber fan down from 100% to 80%. So I turned on the chamber fan through Bambu Studio, and as I was dropping it from 100% to 80%, it turned off on me. Several attempts and same result. I then went to control panel on the X1C to do it manually, same result.
I had to crack open the door and the top glass to keep my PLA print from overheating and melting, which I have never had to do before (I normally crack the top glass but not the door due to noise level.
Anyone know why my printer is refusing to use the chamber fan no matter what I do? This is very strange.
Havce to checked filament\pritner files for any changes lockign the chamber fan off?
After getting the update did you do a powercycle, restart bambu studio too?
If its completely OFF \ wont start - Technical falt, or the Machine start code and Print code is FUBAR and telling it to stay turned off, so whe you adjust it, it overwrides it.
Does it stay on\offf if you print something not through studio - like the internal benchy?
For comparison
Mine, on the initial spool, bed levelling, purging - (60 bed, 220 nozzle, 40% aux, 70% chamber)
When Printing PLA - First Layer (60 bed, 220 nozzle, 0% aux, 70% chamber)
Then after 1st layer (60 bed, 210 nozzle, 70% aux , 70% chamber )
As you can see consistent 70% chamber fan, with other variables adjusted as required for the right amount of squish or cooling or layer time etc for perfect stick.
I had a thought that maybe something was “off” in the custom/tweaked PLA filament profile I had created in previous versions, especially with the mini-update pushed out yesterday, so I went back to the default “Generic PLA” profile and made 2 changes.
I bumped the nozzle temp max/min to 230c.
I bumped the Smooth PEI Plate/Hot Temp Place max/min to 65c.
I started another print using this clean and manually tweaked Generic PLA filament profile. Same exact results. Chamber fan is off, turns right back off when I turn it on, and I can’t sent any chamber temp.
Aside from the filament profile section, I’m unaware of another place to tell a print not to use the chamber fan. It’s weird in Bambu Studio when I do a search for “fan” in the filament profile it shows me an option for controlling the fan, but when I click it the UI takes me to the Cooling tab but doesn’t highlight anything:
Apparently this is an issue with my X1C in general. I power cycled the unit (30 seconds turned off to be sure) and when I try to turn on my chamber fan, it looks like it tries and gives up. I opened a ticket.
I opened a ticket and am praying they respond quickly and have some trick up their sleeves. I’m disappointed to think all the recent upgrades and fan control tweaks had something to do with my issue, but they appear to be purely coincidental.
I will post back when I hear something from BL Support. Fingers crossed.
Appreciate you owning it and responding as such, its human nature to think of the most recent change was the cause and in fact an important trroubleshooting step to exclude, but then move onto other things - which is kind of what patttern you followed, seeking help, power cycling, testing from SDcard etc - cconfirming its independant \ isolated - and then doign the right thing and logging a ticket. All good, well done.
Hey, i am having the same issue. My chamber fan just toggles off when i turn it on. Have you ever had a problem with it sounding weird before it happened? Mine made a terrible noise before it stopped working, i suspect a piece of filament flew inside it, but could be unrelated and just a coincidence. Did you ever have it fixed or it is still not working? Thanks.
Bambu Lab sent me a replacement fan when I sent them a video of it turning off the minute I turned it on. If you haven’t already please open a ticket and have the printer log and a video of the issue handy to accelerate the process.
You can also try taking off the back of your printer and try to manually engage the fan. If there is a piece of filament stuck in there preventing it from spinning then that might dislodge it and return it to service.
I did not hear any noises before mine stopped working. It just wasn’t turning on one day I noticed.
Hey, thanks. I did open a ticket on May 26, also sent them a video like you did. They advised me to open up the back panel and have a look if the fan has a tight connection to the MC board.
Well, i opened it up and no problem with the connection, but i did see the fan blades were very hard to move at first, no wonder it could not make it spin, seemed like it was seized. But, very weird thing is, when i started moving the blades with my finger, it just kinda loosend up with every spin, to the point it was moving freely again.
After doing that, went again to the settings to test it will it work - and it did, no issues what so ever, no noise, or any suggestion that it has a hard time spinning up. Very weird.
There was no dust buildup on it, and if that piece of filament really ended up back there and obstructed the blades somehow, that was quite a trajectory lol. Now it works just fine, but not wanting to risk it will it continue working and seize up again further down the road, i proposed that they send me a replacement fan just to be sure, and they responded they will do just that.
So i had the same thought process about manually engaging the fan like you did, but i waited first what the support is gonna respond. In the end it all worked out fine.
First response from the support took 4 days, second one they responed in 1 day when i sent out the replacement request and all other info they wanted previously, not bad all in all.
That is pretty much what happened to me (the playing with the fan and it started working again) when I opened up the back to install the replacement one they sent me. So, I am going to let that one go for a bit to see if it dies again and then I will replace it with the part they sent me.
Support while slower than I would like does get you where you need to be.
I know myself and a couple of other people are suffering from an erratic chamber fan since the last update. I don’t know if it was the printer firmware or studio that did it, but my chamber fan is fluctuating all over the place during prints, 30, 40, 50% then bounces up to 100% every now and then, then bounces down to 70, 80%. It’s very very annoying, nearly 3 weeks now and nothing seems to be getting done about it.
The chamber fan is controlled via the gcode that is added to each print. The fan will cycle through various speed settings based on the bed’s temp.
In the advanced section of the filament tab, you’ll see this for BBL PLA. I’ve bolded the areas that show you the differences in fan speeds for the various bed temps. For reference, Speed 100% is equal to S255. You can figure out the lesser speeds by dividing up 255, or for example another way to do it, 50% would be 255x0.50 and so on.
Umm, I linked the thread that I started in my post. I only shared the info with you incase your issue is also tied to the last update, but for you it has had more extreme consequences…
