If your dehumidifier is displaying a message or code, check the following:

Code    Description/Reason   Solution
 ON Audible alert is enabled.When the water reservoir is full, the red Bucket Full indicator will flash an alert will signal 5 times every fifteen minutes until the reservoir is emptied. Press and Hold the SIGNAL Button for 2 seconds to toggle this feature On or Off.
LO Indicates the measured humidity is less than 30% This is normal
 E1 Indicates a stuck button on the access panel. Gently push each button in and out to ensure none of them are stuck.
 E2 Indicates the air filter is dirty and needs cleaning.

Clean filter in warm water (NOT HOT) with a mild detergent. DO NOT use any chemicals cleaners. Allow the filter to air dry and reinstall in the unit. Never use the unit without the filter installed.

E3   Indicates a problem with the humidity sensor  Requires service

If you continue to have problems, please contact Haier Appliances at 1-877-337-3639 or visit https://www.haierappliances.com/support/schedule-service to arrange service.