P5 - Malfunctioning of the drain overflow protecting mechanism in indoor unit

What does P5 mean?

This code indicates that the indoor unit's drain overflow protection system has detected an issue, likely due to a blocked drain or a faulty sensor.

• Clogged condensate drain line or pump.
• Water overflow in the drain pan.
• Faulty drain float switch or sensor.
• Incorrect installation or leveling of the indoor unit.

Click steps to track your progress.

1. 1

   Turn off the power to the air conditioner at the circuit breaker.

2. 2

   Inspect the indoor unit's drain pan for standing water and clear any blockages in the drain line.

3. 3

   Ensure the indoor unit is level.

4. 4

   If the problem persists after clearing any clogs, contact a qualified technician to check the drain pump and overflow sensor.