P5 - Drain overflow protection mechanism malfunctioning

What does P5 mean?

The system's drain overflow protection mechanism has malfunctioned. This means the unit is unable to properly prevent condensate water from overflowing, which could lead to water damage.

• Clogged drain line causing water buildup.
• Faulty float switch or drain overflow sensor.
• Malfunction in the drain pump (if equipped).

Click steps to track your progress.

1. 1

   Turn off the air conditioning unit immediately to prevent water damage.

2. 2

   Inspect the condensate drain pan for standing water and clear any obstructions from the drain line.

3. 3

   Ensure the outdoor drain outlet is clear.

4. 4

   If the issue persists after clearing or if no visible clog is found, contact a service professional.