Portable or window unit displays P2 and stops cooling; water may be heard inside the unit.

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

Steps:

• Drain the tank: Locate the drain plug or tank at the rear or bottom of the unit. Place a shallow pan or tray and remove the plug to drain water completely.
• Check float switch: On some models, a float switch detects water level. Ensure it moves freely and is not stuck by dirt or algae.
• Clear drain path: If a drain hose is attached, remove and flush it with water to clear any blockage.
• Level the unit: Make sure the unit is installed level or with a slight tilt as specified in the manual to allow proper drainage.
• Reset: After draining and reassembling, plug the unit back in and restart. P2 should clear.