H2
Mitsubishi Electric Humidifier Element / Evaporative Filter Fault

Humidifier error H2; fan runs but no mist or moisture output.

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Possible Causes

Clogged humidifier filter, failed humidifier fan, blocked water feed to filter, scale buildup on evaporative element

How to Fix / Troubleshooting

Safety: Unplug the unit. Water and electricity are present; avoid splashing near electrical parts.

Steps:

  • Access humidifier section: Remove the front panel and pull out the humidifier cassette or filter frame.
  • Inspect filter: Check the evaporative filter for heavy scale, discoloration, or mold. Replace if heavily contaminated.
  • Clean tray: Rinse the humidifier tray and water channels to remove deposits that may block water flow.
  • Check humidifier fan: Confirm that the small fan dedicated to the humidifier section (if present) runs when humidification is selected. If not, test and replace the humidifier fan motor.
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Repair Difficulty

Easy 2/5

Required Part

Humidifier Evaporative Filter
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