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Miro 24

How to Troubleshoot Purifier Issue on Miro 24

Every step links to its own moment in the video, so you never hunt for the right part again.

  • 14 steps
  • 59 instructions
  • 1 video
  • Updated 2026-04-20

User manualThe full manual, beyond first setup. · All manuals

Miro 24 Smoke During Printing – Purifier Troubleshooting and Fan Replacement Guide

  1. 0:01Issue Overview and Troubleshooting Scope
  2. 0:29Required Tools and Safety Preparation
  3. 0:41Checking Purifier Fan Operation
  4. 1:05If the Purifier Fan Is Not Running – External Circuit Check
  5. 1:27Internal Circuit Inspection
  6. 2:14Internal Wiring Verification
  7. 2:42Cotton Filter Inspection
  8. 3:18Glycerin Cool-Down and Burn-Off Procedure
  9. 3:35Tools Required for Fan Replacement
  10. 3:45Preparing for Fan Replacement
  11. 4:07Removing the Old Fan
  12. 5:20Installing the New Fan
  13. 6:08Reassembly and Testing
  14. 6:40Preventive Maintenance Reminder
Written steps14

Issue Overview and Troubleshooting Scope

Watch this part0:01
  1. Identify smoke coming from the Miro 24 during printing.
  2. Understand this typically indicates a purifier malfunction.
  3. Note common causes include glycerin buildup and poor maintenance.
  4. Prepare to inspect the purifier unit, wire connections, and cotton filter.

Required Tools and Safety Preparation

Watch this part0:29

What you need

  • Gloves
  • Lint-free cloth
  • Screwdriver
  1. Turn off the power.
  2. Allow the heating plate to cool to room temperature before proceeding.

Checking Purifier Fan Operation

Watch this part0:41
  1. Turn the power on.
  2. Open the purifier chamber.
  3. Check whether the purifier fan is running.
  4. Inspect the area around the fan motor for glycerin buildup.
  5. Clean any glycerin buildup as needed.

If the Purifier Fan Is Not Running – External Circuit Check

Watch this part1:05
  1. Turn off the main power.
  2. Loosen the screws and remove the purifier lid.
  3. Check whether the circuit is disconnected.
  4. Tighten any loose screws.
  5. Reinstall the lid.
  6. Turn the power on and test the fan again.

Internal Circuit Inspection

Watch this part1:27
  1. If the fan is still not running, close the purifier chamber.
  2. Turn off the main power.
  3. Open the lid.
  4. Open the top heating chamber.
  5. Lift the heating plate toward the back.
  6. Perform this step only when the unit is powered down and cooled.
  7. Be cautious of sharp edges.
  8. Avoid pulling the plate too far to prevent wire disconnection.

Internal Wiring Verification

Watch this part2:14
  1. Inspect whether any internal circuits are disconnected.
  2. Tighten any loose screws.
  3. Reinstall components.
  4. If the circuit is intact but the fan still does not run, the fan likely needs replacement.

Cotton Filter Inspection

Watch this part2:42
  1. If the fan is running but smoke persists, open the purifier chamber.
  2. Inspect the cotton filter for yellow discoloration.
  3. Wipe the filter to check for excessive moisture.
  4. Replace the cotton filter if it is wet or clogged.

Glycerin Cool-Down and Burn-Off Procedure

Watch this part3:18
  1. Open the heating chamber or purifier chamber.
  2. Allow the purifier to run for at least 5 minutes.
  3. Let the system cool and clear out excess glycerin.

Tools Required for Fan Replacement

Watch this part3:35

What you need

  • Gloves
  • Lint-free cloth
  • Screwdriver
  • Replacement fan

Preparing for Fan Replacement

Watch this part3:45
  1. Turn off the main power.
  2. Open the top purifier chamber.
  3. Loosen the screws and remove the lid.
  4. Take a reference photo before disconnecting any wires.
  5. Loosen the screws to disconnect the wires.
  6. Loosen the nut and remove the wires.

Removing the Old Fan

Watch this part4:07
  1. Remove the fan holder.
  2. Take a reference photo of the fan orientation.
  3. Inspect the area under the fan motor for glycerin buildup.
  4. Clean the area as needed.
  5. Remove the old fan.

Installing the New Fan

Watch this part5:20
  1. Install the new fan in the correct orientation.
  2. Reinstall the fan holder.
  3. Pass the wires through the nut one by one.
  4. Reconnect the wires according to the reference photo.
  5. Secure all wire connections with screws.

Reassembly and Testing

Watch this part6:08
  1. Reinstall the purifier lid.
  2. Reinstall all removed components.
  3. Turn on the power.
  4. Verify the purifier fan is operating correctly.

Preventive Maintenance Reminder

Watch this part6:40
  1. Perform daily maintenance consistently to prevent glycerin buildup.
  2. Reference the Miro 24 maintenance guide as needed.
  3. Contact a DTF Station technician if issues persist.

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