LCD shows P4 - Abnormality of drain sensor/Float switch connector open

What does P4 mean?

The remote controller LCD displays 'P4', indicating an abnormality with the drain sensor or that the float switch connector is open.

• Drain sensor malfunction.
• Float switch connector is open or disconnected.
• Drain pan overflow or blockage.

Click steps to track your progress.

1. 1

   Check the drain sensor and float switch connectors for secure connections.

2. 2

   Inspect the drain pan for water overflow and clear any blockages in the drain line.

3. 3

   Verify that the drain pump (if applicable) is operating correctly.