Even a capable 3D printer like the Creality Ender-3 S1 Pro can have specific issues that users commonly face. Understanding these potential challenges can help troubleshoot and maintain consistent print quality.
Here are five common issues with the Creality Ender-3 S1 Pro:
Bed Adhesion Problems
Even with CR Touch and a PEI spring steel build plate, getting the first layer to stick on the S1 Pro can still be tricky. The CR Touch maps out bed height but can’t set the exact nozzle-to-bed distance, so you must tune the Z offset in 0.01 mm steps until the filament lays down perfectly.
Regularly clean the PEI sheet with alcohol to remove oils or residue that prevent adhesion. On top of that, it’s important to know that temperature swings or drafts in your room can also cause adhesion problems, especially with ABS.
Under-Extrusion
Under-extrusion on the S1 Pro usually comes down to three factors. First, check the Sprite extruder’s tension: if the spring loosens over time, the filament gear can slip without you even noticing. Second, examine the PTFE liner in the hotend; if it’s frayed, heat creep will soften the filament too early and cause blockages before the nozzle.
Finally, look at your slicer’s flow rate. Running below 100 percent means you’re underfeeding filament. Bump that setting up to 105 percent when using dense PLA spools with thick cores, and you should be all set.
Z Axis Wobble/Printing Inconsistency
Dual Z lead screws give the S1 Pro a strong foundation, but slight banding can still creep into prints if things aren’t perfectly aligned. With the printer off, slide the X gantry to the center and measure from each lead screw nut down to the gantry base. If one side sits higher, loosen its coupler, rotate the motor shaft until it matches, then retighten the set screws.
Over time, the nuts that hold the X-gantry rollers against the rails can loosen or wear, leading to wobble. Check and adjust these nuts so they’re snug without being overtight. Then, every 50 hours of printing, apply a thin coat of PTFE grease to both lead screws to reduce friction and prevent small Z-axis stalls.
Firmware Glitches or Bugs
Updating your S1 Pro’s firmware can bring new accessory support, but fresh builds sometimes have unexpected quirks. You might find the touchscreen freezing mid-calibration or CR Touch readings that claim the bed is level when it clearly is not. Plus, thermal runaway warnings that trigger without a real problem also happen.
Fortunately, these issues can easily be fixed. After flashing a new firmware version, back up your EEPROM settings through the UI and do a factory reset to clear out old values. If you still experience odd behavior (inaccurate leveling, frozen menus, or false thermal alerts), roll back to the previous stable build, such as version 1.0.4.17, via microSD.
Nozzle Clogs
Clogs on the S1 Pro can strike when you least expect them, especially if you run PETG, TPU, or composite filaments with wood or glow particles. A clicking extruder or sudden under-extrusion is your cue to act.
Heat the hotend to 240 °C (464°F) and unload any filament. Afterward, perform a cold pull by heating to 100 °C (212°F), feeding cleaning filament or nylon until it oozes, letting it cool to 90 °C (194°F), and pulling it out to remove debris.
If that doesn’t clear the blockage, heat to 260 °C (500°F), remove the 0.4 mm brass nozzle, and soak it in acetone (for PLA) or use an ultrasonic cleaner. For a long-term solution, swap to an all-metal nozzle rated for 300 °C (572°F) to handle materials without wearing out as quickly.