E2
Levoit Humidifier
Severity: ModerateWhat it means
E2 on a Levoit humidifier means the built-in humidity sensor is not reading correctly.
Clean the sensor area, ensure the water tank is properly seated, and try a power cycle.
Persistent E2 may require a replacement unit under warranty.
Affected Models
- Levoit LV600HH
- Levoit OasisMist 600S
- Levoit Classic 300S
- Levoit Dual 200S
- Levoit LUH-D301S
Common Causes
- Mineral deposits coating the humidity sensor probe
- Moisture or condensation on the sensor causing a false reading
- Humidity sensor component failure
- Water tank not properly seated, disrupting sensor circuit
How to Fix It
-
Power off and unplug the humidifier.
-
Remove the water tank and empty the base.
Pour out any water from the base tray.
Moisture sitting near the sensor can cause false readings. -
Clean the sensor area.
Look inside the base for the humidity sensor — a small probe or vent opening.
Gently clean around it with a cotton swab lightly dampened with white vinegar to remove mineral scale.
Do not submerge the sensor or use harsh cleaners. -
Allow the base to dry completely.
Leave the humidifier open and unplugged for 2–3 hours before refilling.
Residual moisture on the sensor is a common cause of E2. -
Reinstall the tank and restart.
Ensure the water tank is clicked firmly into position.
Restart and allow a few minutes to see if E2 clears.
Frequently Asked Questions
Is Levoit E2 covered under warranty?
Yes — E2 from a manufacturing defect in the humidity sensor is covered under Levoit's standard warranty (typically 2 years).
Contact Levoit support with proof of purchase if cleaning does not resolve it.
Can I use the humidifier without the humidity sensor working?
Most Levoit models require the humidity sensor to function before they will mist.
E2 typically prevents operation.
Some models have a manual mode that bypasses auto-humidity — check the app or manual for your specific model.