Fujitsu · Air Conditioners
This error occurs if the outdoor fan rotation speed is less than 100rpm for 20 seconds after starting. If this repeats 3 times, the compressor and fan motor stop. If repeated 5 times, they stop permanently. The outdoor unit shows no indication.
Click steps to track your progress.
Turn off operation and try to rotate the outdoor fan by hand to check if it's caught, dropped off or locked. If abnormal, address the fan or bearing.
Check for excessively high temperatures around the motor, which might be causing protection. If so, let the temperature come down before restarting.
If the above steps don't resolve the issue, a technician should check the outdoor unit fan motor or the Main PCB.