What to do if my Patron D-160 Dehumidifier shows error code E4?
- DDavid JacksonAug 7, 2025
If your Patron Dehumidifier displays error code E4, it indicates a water pump failure. First, make sure the drain hose isn't blocked and is properly connected to the back of the unit; the unit won't pump if the hose isn't connected. Also, check that the internal hose from the pump to the fitting isn't restricted by a clamp. If these steps don't resolve the issue, you may need to test or replace the water pump.