err-104PM4i Plus II Industrial

Honeywell PM4i Plus II Industrial error 104: Head fail

The Honeywell PM4i Plus II Industrial error 104 is a critical alert signaling a fault within the thermal printhead, usually related to abnormal temperature or connectivity issues. The unit shuts down the print engine to prevent further damage. A clean, careful inspection is the primary diagnostic step.

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Common causes

  • 1Dirty printhead obstructing thermal sensors.
  • 2Loose or disconnected head thermal sensor cable.
  • 3Thermal fatigue from heavy-duty cycle.
  • 4Short circuit within the thermal head matrix.

Solutions

Quick Diagnosis

Error 104 triggers when the system cannot correctly read the thermal printhead status. Look for missing lines or print blankness on your labels.

Step-by-step Solution

  1. Power off the printer.
  2. Inspect the connection cables at the rear of the head.
  3. Clean the printhead surface with high-purity isopropyl alcohol.
  4. Restart the device and observe if the sensor reads normal parameters.

Prevention and Maintenance

Do not use abrasive materials on the printhead as they can scratch the elements. Regular cleaning with alcohol is recommended for industrial environments.

When to call a technician

If cleaning and checking cables does not resolve error 104, the printhead has likely failed internally and requires a technician's inspection.

Device Technical Sheet

  • Technology: Industrial Thermal.
  • Critical Component: High-precision Thermal Head.
  • Compatible Consumable: Industrial Thermal Ribbons.
  • Usage: Continuous production.
  • Official drivers / firmware

Steps to follow

  1. 1

    Power off

    Disconnect power to prevent electrical damage.

  2. 2

    Inspect

    Ensure head cables are snug.

  3. 3

    Clean

    Wipe with an alcohol-moistened swab.

  4. 4

    Reset

    Power back on to test the system.

Frequently asked questions

Error 104 points to an anomaly in thermal head temperature or connectivity.

Yes, the printhead is a vital component and should be handled with care.

Industrial thermal ribbons.

Avoid touching the heating elements with your bare hands.