Unit displays F2; water collection stops even though fan may still run.

Safety: Turn off and unplug the unit before removing the water tank.

Steps:

• Remove and empty tank: Pull out the water tank, empty it completely, and rinse to remove slime or scale.
• Check float: Inside the tank or tank cavity, locate the plastic float. Ensure it moves freely up and down. Clean any mold or mineral buildup that may cause sticking.
• Inspect switch: Many Mitsubishi Electric units use a magnetic reed switch in the body and a magnet in the float. Ensure the float magnet is intact and correctly oriented.
• Reinstall tank: Slide the tank fully into place until it clicks. If the tank is not seated, the level switch will indicate “full” and trigger F2.
• Electrical check (for technicians): Test continuity of the float/reed switch while moving the float. Replace the water level switch assembly if it does not change state.