Frigidaire portable AC shows F4 and may shut down or limit operation.

Safety: Turn the unit off and unplug it before draining water.

Steps:

• 1. Drain the tank: Move the unit to a location where water spillage is acceptable. Remove the drain plug or cap at the bottom rear and drain water into a shallow pan or tray.
• 2. Check float switch: Remove the access panel to locate the float assembly in the condensate reservoir. Ensure it moves freely and is not stuck by debris or scale. Clean as needed.
• 3. Inspect drain hose (if used): If using continuous drain, ensure the hose is not kinked, elevated above the outlet, or blocked. Flush the hose with water.
• 4. Condensate pump (if equipped): Listen for pump operation when the tank is nearly full. If the pump does not run, check wiring and replace the pump if failed.
• 5. Reset: After draining and cleaning, reinstall plugs and panels, then plug in and restart. F4 should clear if the float switch is working.