York portable or room air conditioner shows P1 and stops cooling

Safety: Unplug the unit before draining water.

• Empty condensate tank: Remove the tank or open the drain plug on the back/bottom of the York portable AC and drain into a pan.
• Clean float and tank: Remove any slime or debris from the float mechanism and tank. Ensure the float moves freely.
• Check internal drain: Use a small brush or pipe cleaner to clear the internal drain passage.
• Test operation: Reinstall the tank securely, plug in, and restart. If P1 returns immediately, the float switch or water level sensor may need replacement.