Code 41-13 Defrost Timeout

What does 41-13 mean?

The system initiated a defrost cycle but could not reach the target coil temperature within the maximum allowed time. This suggests heavy icing or a sensor issue.

• Extreme amount of ice formed on the outdoor coil.
• Outdoor Coil Thermistor (OCT) sensor not securely attached to the butterfly tube.
• High winds cooling the coil, preventing heat buildup for defrost.
• Faulty OCT sensor.

Click steps to track your progress.

1. 1

   Check the outdoor coil for excessive ice buildup and allow it to naturally melt or carefully clear it if safe to do so.

2. 2

   Ensure the outdoor coil thermistor (OCT) sensor is securely attached to its location.

3. 3

   Verify that the outdoor unit is not exposed to unusually strong winds that could interfere with the defrost cycle.

4. 4

   If the problem continues, a professional should inspect the OCT sensor and the defrost system components.