2502 (P5) Drain overflow protection

What does 2502 (P5) mean?

This error means the drain overflow protection system has been activated, indicating that the condensate drain pan is full or overflowing. This is usually due to a clogged drain line or a malfunctioning drain pump.

• Clogged condensate drain line.
• Malfunctioning drain pump.
• Incorrect installation of the drain line.
• Dirty air filter causing excessive condensation.

Click steps to track your progress.

1. 1

   Turn off the power to the indoor unit at the circuit breaker.

2. 2

   Locate the indoor unit's drain pan and check for standing water.

3. 3

   Inspect the condensate drain line for any blockages and clear them if accessible.

4. 4

   Ensure the drain line has a proper slope for gravity drainage, if applicable, or check the drain pump for operation.

5. 5

   Clean or replace the air filter if it's dirty, as this can contribute to condensation issues.

6. 6

   Restore power. If the problem persists, a service technician may need to inspect the drain pump or system.