The answer to 'why is my dehumidifier not working' is that there could be several common causes, such as a clogged air filter, a malfunctioning compressor, or a problem with the drainage system. Dehumidifiers work by drawing in moist air, removing the moisture, and then blowing out the dry air. If any of the key components are not functioning properly, the dehumidifier will not be able to effectively remove humidity from the air.
Some common symptoms of a malfunctioning dehumidifier include the unit not turning on, the compressor not running, the air not blowing, or the unit not removing moisture from the air. To troubleshoot the issue, you can start by checking the air filter and cleaning or replacing it if necessary. You can also check the compressor and drainage system to ensure they are working correctly. If you are unable to identify and fix the problem, it's best to call a professional HVAC technician who can properly diagnose and repair the dehumidifier.