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Troubleshooting

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Justagwas edited this page Jul 18, 2026 · 1 revision

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.

Quick reference

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

Installation

The machine G-code fields are not visible

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.

The slicer does not save the profile

Save the P1S preset as a user preset before editing it.

Copy the complete contents from the Raw file and replace the complete field.

The profile disappears after reopening the slicer

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 printer still runs the previous sequence

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.

Adaptive probing

L-Lite, L, or XL does not probe

Keep Bed Leveling enabled when sending the print.

The probing block is conditional, so the observed path can differ between jobs.

S does not probe

This is the intended S behavior.

S enables bed-level compensation but omits the new adaptive probing request to keep the sequence short.

Purging and color transitions

Old color appears at the beginning of the print

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.

Old color remains with XL

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 has no front purge line

S uses a stationary front prime. This is one of the changes that shortens its startup.

First layer

The first layer does not adhere as expected

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.

The nozzle appears too close or too far away

Restore the optional line to its default commented form:

; G29.1 Z{-0.02}

Then repeat the normal leveling and first-layer checks.

AMS and external spool

AMS loading does not complete

Check the normal AMS information shown by the printer:

  • selected slot;
  • available filament;
  • spool movement;
  • filament path;
  • AMS and buffer status.

External-spool printing still asks for an AMS slot

Confirm that the external spool is selected in the slicer or print workflow.

No G-code edit is required.

Filament does not unload

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.

Timing and fans

Startup takes longer on one print

The most common reasons are:

  • adaptive probing ran;
  • the printer began at a lower temperature;
  • filament loading took longer;
  • a longer profile was selected.

Startup is shorter than another example

The conditional probing block may have been skipped, or the printer may already have been warm.

Fans remain active after the print

The end profiles include final ventilation:

End profile Ventilation
S 10 seconds
L 30 seconds
XL 60 seconds

A canceled print ends differently

A canceled job may use the slicer or firmware cancellation sequence instead of the ordinary machine end G-code.

Compare with stock

A stock comparison can clarify whether a behavior comes from the custom machine sequence or from another part of the print setup.

  1. select the stock P1S preset;
  2. slice the same model again;
  3. compare the observed sequence.

See Recovery.

Reporting an issue

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.

Related pages

P1S-GCODE

Start here

Understand the profiles

Help

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