Dehumidifier will not power on at all; no lights or display.

Safety: Unplug the unit before opening any panels. If you are not comfortable working with electrical components, contact a technician.

Steps:

• Verify outlet: Test the wall outlet with another device. Reset any tripped breakers or GFCI outlets.
• Inspect power cord: Check the Frigidaire cord for cuts, burns, or loose plug blades. Replace if damaged.
• Check control lock: Some models have a child lock; hold the lock button (if present) for 3–5 seconds to unlock.
• Internal fuse: Remove the rear or top cover to access the main control board. Look for a small glass or ceramic fuse. If blown (broken filament or blackened), replace with the same rating.
• Board inspection: Check the main control board for burn marks or swollen components. If present, the board likely needs replacement.
• UI cable: Ensure the ribbon cable between the display/control panel and main board is firmly connected.
• Service: If the unit still shows no signs of life, the main control board or user interface board is likely defective and should be replaced by a professional.