What does 89-05 mean?

The system has detected a freeze-up in the heat exchanger during the cooling operation and has activated protection. This is an error.

• Low refrigerant charge
• Blocked airflow to the indoor coil
• Faulty indoor fan

Click steps to track your progress.

1. 1

   Ensure indoor unit air filters are clean.

2. 2

   Check for obstructions around the indoor unit.

3. 3

   Verify the indoor fan is operating correctly.

4. 4

   A technician should inspect refrigerant levels and airflow.