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Troubleshooting
Most questions can be resolved by checking the selected printer preset, the Bed Leveling option, or whether the model was sliced again after a change.
| Symptom | Explanation or action |
|---|---|
| Machine G-code fields are hidden | Enable Advanced Mode and open the printer preset |
| The previous profile still runs | Select the new preset and slice the model again |
| L-Lite, L, or XL does not probe | Confirm that Bed Leveling is enabled |
| S does not probe | Expected behavior; S does not request a new probe |
| Old color appears at the start | Use L or XL, or adjust the normal transition flush settings |
| S does not draw a purge line | Expected behavior; S uses a stationary prime |
| Fans continue after printing | Expected final ventilation |
| You want the stock sequence | Follow Recovery |
Make sure the printer preset is open rather than the filament or process preset.
Enable Advanced Mode, then open the machine start and end G-code section.
Save the P1S preset as a user preset before editing it.
Copy the complete contents from the Raw file and replace the complete field.
Confirm that the user preset was saved and remains selected.
A name such as P1S-GCODE L makes it easy to distinguish from the stock preset.
The start and end scripts are inserted during slicing.
Select the intended preset and slice the model again. A previously generated file still contains the earlier sequence.
Keep Bed Leveling enabled when sending the print.
The probing block is conditional, so the observed path can differ between jobs.
This is the intended S behavior.
S enables bed-level compensation but omits the new adaptive probing request to keep the sequence short.
S and L-Lite use less purge than L and XL.
For a strong transition:
- choose L or XL;
- use the slicer’s transition-specific flush settings;
- allow a skirt or purge line to help establish the new material.
Some transitions require more material clearing than the machine start profile alone provides.
The slicer’s AMS or material-transition settings are the appropriate place to increase transition-specific flushing.
S uses a stationary front prime. This is one of the changes that shortens its startup.
Check the ordinary first-layer conditions:
- clean build surface;
- correct slicer selections;
- Bed Leveling enabled for L-Lite, L, or XL;
- clean nozzle;
- normal printer calibration.
If the optional Z-offset line was enabled, comment it again before comparing the result.
Restore the optional line to its default commented form:
; G29.1 Z{-0.02}Then repeat the normal leveling and first-layer checks.
Check the normal AMS information shown by the printer:
- selected slot;
- available filament;
- spool movement;
- filament path;
- AMS and buffer status.
Confirm that the external spool is selected in the slicer or print workflow.
No G-code edit is required.
With an AMS, use the printer’s normal cutter and filament-path checks.
With the external spool, automatic return to an AMS bay does not apply.
The most common reasons are:
- adaptive probing ran;
- the printer began at a lower temperature;
- filament loading took longer;
- a longer profile was selected.
The conditional probing block may have been skipped, or the printer may already have been warm.
The end profiles include final ventilation:
| End profile | Ventilation |
|---|---|
| S | 10 seconds |
| L | 30 seconds |
| XL | 60 seconds |
A canceled job may use the slicer or firmware cancellation sequence instead of the ordinary machine end G-code.
A stock comparison can clarify whether a behavior comes from the custom machine sequence or from another part of the print setup.
- select the stock P1S preset;
- slice the same model again;
- compare the observed sequence.
See Recovery.
Include the information that directly describes the behavior:
- selected start and end profile;
- slicer and firmware version;
- AMS or external-spool use;
- stage at which the behavior occurred;
- any local changes;
- whether the stock sequence behaves differently.
A short video is useful for movement or timing questions.
P1S-GCODE
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Understand the profiles
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