Check the power cord connection if the dehumidifier is not working and ensure the unit is plugged into a working power outlet. Reset the local circuit breaker or fuse as necessary.
Remove the water tank from the front of the unit and empty if the dehumidifier is not operating properly or lowering the moisture content well. Replace the water tank in the unit.
Open the front access panel and remove the air filter if the dehumidifier is not functioning well. Rinse the filter in clean water and dry thoroughly before returning to the unit.
Check the front grill for possible obstructions and wipe away excess dirt or debris if the unit is not removing moisture from the air as expected.
Close all doors and windows if the dehumidifier is not reaching the desired humidity level even after a prolonged period of use.