Honeywell portable AC shows P1 and stops cooling; unit may beep.

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

Steps:

• Drain the bottom tray: Move the unit to a location where water spillage is acceptable. Place a shallow pan under the lower drain plug, remove the cap, and allow all water to drain. Reinstall the cap securely.
• Check continuous drain (if used): Ensure the drain hose is not kinked, elevated above the drain outlet, or blocked. Flush the hose with water.
• Inspect float switch: If P1 returns immediately, remove the rear panel and inspect the float mechanism in the bottom tray. Clean any slime or debris and verify free movement.
• Test operation: Reassemble, plug in, and run the unit. If P1 no longer appears, the issue was likely a full tray or stuck float.
• Replace float switch: If the float switch does not change state when moved, replace it with a compatible Honeywell float switch assembly.