Error 448 — Lock error on Fan1

What does 448 mean?

The outdoor unit's Fan1 is locked or seized, preventing it from rotating. This can be caused by physical obstructions or a motor malfunction.

• Foreign object obstructing the fan blades
• Bearing failure in the fan motor
• Internal motor fault preventing rotation
• Ice buildup in winter conditions

Click steps to track your progress.

1. 1

   Immediately turn off power to the outdoor unit at the circuit breaker.

2. 2

   Visually inspect the Fan1 blades and surrounding area for any foreign objects (sticks, leaves, debris) that might be jamming the fan.

3. 3

   Carefully remove any obstructions.

4. 4

   Attempt to manually rotate the fan blades. If they do not turn freely, the fan motor may be seized due to a bearing failure.

5. 5

   If the fan remains locked after clearing obstructions, the fan motor likely needs to be replaced by a qualified technician.