2.10 Faults, clogs, and how far you may go
Module 2 · Lesson 10 of 10 · about 4 min
Module 1's rules about asking for help still apply. This is where the line is for more technical work.
You may follow Bambu Lab's official troubleshooting guides, on Bambu Lab's wiki (start from the H2S pages or the X2D pages), as long as the fix needs no screws removed and no wires disconnected.
Ask in the Slack channel
#3D-Skrivarefirst before anything that involves unscrewing parts, disconnecting wires or a lot of spare parts. It is not forbidden, but it has to be coordinated, so wait for a room developer or board member to reply before you start.You may take a PTFE tube off when the official guide for that fault says to. Put it back exactly as it was. What is never allowed is changing how the filament is fed (1.4 Meet the AMS).
Act immediately, without asking, if there is a fire or electrical fault. Deal with the danger first, then switch off and unplug if it is safe, and tell us in Slack (1.13 Faults, fire, and who to tell).
Nozzle clogs
Signs of a clog: weak or uneven extrusion, or nothing coming out at all.
You may do this yourself: Bambu's cleaning-needle method. Set the nozzle on the printer's screen to about 10 °C above the material's normal printing temperature, then push a cleaning needle up through the tip about a centimetre, a few times. The cleaning needles are in the drawer directly under the left H2S. Keep your hands away from the hot nozzle. Don't set a high temperature, because pressure behind a clog can spray melted plastic.
Not for members: Bambu's hex-key-and-lighter method. It uses an open flame, and it needs the nozzle removed, which members may never do on an X2D. Ask in Slack instead.
Extruder clogs
If the extruder clicks about once a second and nothing comes out, a piece of filament is probably stuck in the gears. Fixing that means taking things apart, so ask in Slack.
AMS problems
The same limits apply. These are the common cases, and where they stop being yours to fix.
What you see | Likely cause | What to do |
|---|---|---|
"Filament broken in path", or a slot won't load | Damp filament that has gone brittle and snapped | Follow Bambu's guide for this fault. If it has you take the PTFE tube off to pull the broken piece out, that's fine, but put the tube back as it was. If the piece is further in than the guide covers, ask in Slack. Dry your filament before using it again, because dry filament is much stronger. |
Flashing red light on an AMS 2 Pro | Filament jammed or not detected | Check that the spool turns freely and the lid is latched. If that doesn't fix it, ask in Slack. |
Solid red light on an AMS 2 Pro | The AMS isn't talking to the printer | Report it in Slack. |
Red light on an AMS HT | Its light patterns mean different things; the AMS HT wiki page lists them | Check that the spool turns freely and the lid is closed and locked. If that doesn't fix it, report it in Slack. |
Loading feels stiff, or a tube looks damaged | Worn PTFE tubes | Report it in Slack. Replacing a tube needs spare parts, so it is coordinated there first. |
A pause before a filament change, with a fan running | The AMS HT is cooling its chamber before feeding filament that would soften | Normal. Wait. |
Maintenance
Most maintenance here is not limited to particular people. If you are comfortable with a task and have properly studied how to do it, you may do it. Some preventive work is done on community work days. Anything that needs taking apart or a lot of spare parts goes through Slack first.