How to Fix / Troubleshooting

Safety: Unplug the unit before opening the housing.

Steps to address F4:

Check for obstructions: Look through the grille to see if anything is blocking the fan. Remove any foreign objects.
Spin test: With the unit unplugged, gently spin the fan blade by hand. It should rotate freely without grinding.
Inspect wiring: Remove the cover and check the fan motor connector at the PCB. Reseat it firmly.
Test motor (advanced): Use a multimeter to check motor winding resistance. An open circuit indicates a failed motor.
Replace fan motor: Install a new Homedics dehumidifier fan motor if the original is seized or electrically open.
Control board: If the motor tests good but does not receive power, the control board fan circuit may be defective and require replacement.

Homedics dehumidifier shows F4 and stops dehumidifying.

Possible Causes