Honeywell portable AC shows P2 and may stop cooling or dehumidifying.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Upper tank full, Blocked internal siphon or drain tube, Faulty upper tank level sensor, Wiring issue to level sensor

Safety: Unplug the unit before draining or opening panels.

Steps:

Drain water: Some models have an upper drain port. Place a container under the port, remove the cap, and drain water completely.
Check internal tubing: If accessible, inspect the internal drain tubes for kinks or clogs. Flush with warm water if blocked.
Inspect level sensor: Locate the upper tank level sensor or float and ensure it moves freely. Clean any buildup.
Replace sensor: If the sensor is stuck or electrically faulty, replace it with the correct Honeywell water level sensor.

Medium 3/5

Upper Tank Water Level Sensor

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