LED Light bulbs always blow prematurely in ceiling fans
In addition to the first answer... some LED lights are not dimmable. Therefore, if there is a speed switch and/or dimmer switch, make sure that: 1) the LED bulbs are dimmable, 2) the Dimmer/Speed switch is properly rated for fan and LED light use, and 3) the switch is wired properly.

If these are not the case, then the fan could be defective and causing the issue.