How to Fix / Troubleshooting

Safety: If you smell burning plastic or see smoke, unplug the unit immediately and do not use it until inspected.

Steps:

Initial use: A mild odor during the first few hours of use can be normal as manufacturing residues burn off. If it persists, investigate further.
Clean vents: Ensure all air inlets and outlets are free of dust and obstructions.
Inspect internals: With the unit unplugged, open the housing and look for discolored or melted plastic, burnt wiring, or scorched PCB areas.
Tighten connections: Check and tighten any loose spade connectors or terminal screws.
Replace faulty parts: Replace any burnt motor, transformer, or control board. If damage is extensive, replacement of the entire unit may be safer.

Humidifier has a strong plastic or burning smell when running

Possible Causes