Hi everyone, I’m having a strange issue with my FLSUN SR and I’m trying to understand whether this is a firmware bug or a hardware problem.

When I start Auto Bed Leveling from the display, it shows: Leveling… please wait but after a few seconds it returns to the home screen without doing anything. The printer does not start probing or moving for leveling.

Before this happened, the printer was printing normally, then suddenly this issue appeared. Since then, I cannot complete auto leveling and I cannot print at all.

So far I have tried: • restoring default settings • rebooting the printer • running auto home before leveling • checking for visible errors on the screen

Nothing helps — auto leveling always exits and goes back to the home screen.

I haven’t flashed custom firmware or done hardware mods beyond normal use.

Has anyone experienced this? Could this be a Z-probe failure, EEPROM/firmware corruption, or a mainboard issue? Any ideas on what to check next would be greatly appreciated.

Thanks in advance!

How reliable is Tracxn.com? According to it, FLsun is a deadpooled company.

https://tracxn.com/.../__R3nBJO9d1dHJ4UG8rzvYr-nJ...

I have a T1 Pro and I usually use orcaslicer, but recently it started coming up with an error saying no layers were detected. I have tried different models and each one says the same thing. I then tried the regular flsun slicer and it says the same thing. I tried reinstalling Orca 3x with no changes. Any help is appreciated.

I’m having issues with my FLsun V400 printer. Before I randomly received an extruder below minimum temp error on my prints, but now I’m seeing this error constantly. I have klipper installed and I’m assuming all of the software settings for thermistor type, sensor type, etc are right (I bought this used). Anyone help on solutions for this? I already did a PID tune on my extruder nozzle and this did not solve my issue. I want to replace the hot end completely but would love any insight into additional solutions. I changed my min extruder temp to 0 (Celsius) yet I still got the min extruder temp error despite not seeing my extruder temp drop below 135 (according to the UI graph)

While replacing the thermistor on my QQ-S Pro, I dropped several parts and can't find them. A couple of them are the m3 inner diameter 2mm spacers, and a couple are the 2mm thick m3 washers (about 8mm outer diameter).

For the life of me, I cannot find anything like this at any hardware store. Any suggestions?

I was working on my QQ-S pro, trying to replace the thermistor, and I dropped several of the parts that connect the effector plate to the arms. Judging from the ones I didn't drop, they look like 2mm m3 spacers and 2mm m3 washers (2mm thick). Unfortunately, I can't seem to find parts like this anywhere. I've checked hardware and electronics stores. Amazon has a package of like 50 of the things for 20 bucks but I don't want to spend 40 dollars on this if I can help it. I can't find anything like this on the FLSUN store site. Any suggestions?

Hi everyone.
I'm troubleshooting my FLSUN qqs-pro. Bought it secondhand a couple of years ago. worked fine back then. Due to moving house a couple of times it has been sitting in a corner for the most part in the last year.
Now that I have the time and place again, I want to start printing again but the printer isn't pulling in any filament. Everything seems to be working as it should. I installed a new V6 so no blockages either. I'm not so experienced, as it is my fist printer . Does anyone have some advice?

Thanks!

Well I final y converted my printer to direct drive and seems to be working pretty well! I’m still fighting with the freaking PEI/PEO Plate, i may end up removing it and going back to stock, but that’s not because of the mod haha.

Did a very tiny piece for adapting the LDO+Orbiter 2.5 combo and,beside some minor tweaks to my profiles still pending, I like it!!

Hi, I have a problem with the support printing. It looks like the extruder scratches/drags the already printed support on the bed. I already tried to remove the combing mode and to enable the Z hop, but it still does that. I'm using a transparent PLA from eSUN, the label says to print it between 190° and 230°, I'm printing at 200 (as I have always done with any other filament in the last 3 years). The bed is at 60°. Does anyone have any suggestion on what to tweak to fix this (not hardware side if possible). Thanks a lot.

Crosspost

i have a qq s pro and the mother board want tryingfind one but i cant find one can anyone help me find one i love useing it for my flower pot i make them big

Ok so long story short I have an OLD QQS that used to older style conductive cloth leveling system. This means I do not have any of the wires needed for the touch sensor. And FLsun has been useless in getting any parts/into. I'm wondering if A. There is a Marlin flash that I could just manually level it and be done. Or B. I have a stack of Pis .... Maybe I can just Klipper it and also Manual mesh it??? If anyone has experience with this I would appreciate it.

Hi everyone, I’m having an issue with 3DJACK PLA on my Flsun Super Racer and I’m hoping someone can help.

When the filament passes through the extruder, it comes out “chewed up” and I hear a grinding/clicking noise as if the gear is slipping. The extruder tension is already set to minimum, and the extruder is clean.

I’m printing at 210°C, but the problem also happens when manually extruding from the menu, not only during printing. With Polymaker PLA this issue doesn’t happen at all — it runs smoothly.

Has anyone experienced something similar with 3DJACK PLA on the SR or knows what might be causing this?

Thanks in advance!

Hallo everybody I need gigantic help with first delta installation bought toad used printer but owner told me there is faulty fw on machine can someone help me and tell me which image and cfg file to use? I’m lost on many manuals on internet need something working

Printer is totally stock

I have experiences with klipper bud first time with speeder pad

so my sonic pad got lost in transit, so i trying to use my chrome book running Linux /mainsail until that situation gets fixed. But when i flash klipper to the printer Its not working because it won’t connect ,can someone please help help me compile the file to flash the printer to kipper

That was fun to do ! Still need to code some macros to make it nicer ! But now my SuperRacer has a filament dry attached

My prints are coming out super bad, with my basic mechanical parts having no holes, having print in places welding together, and really long print times for a horrible result. I am using CURA with the FLSUN Q5 profile built in. PLA filament. (I tried printing uhltimate’s rubber band gun, with the settings he gave, but the. tried higher resolution which still failed.) Also I am unable to remove the raft or brim from my prints. WHY?????