How to fix a window fan that wont turn on?

Check the cables. Check your circuit breaker. Ensure that the socket is live. Check the fan fuse. Replace the cable. Clean the fan. Lubricate the engine. Call customer service.

If your window fan doesn't work, you may have an electrical problem. Check your fuse box. Look for a fuse labeled "fan" or "light" and check to see that it has not blown out. If that's not the problem, you may have a loose wire. You can try to reconnect the wires or replace the fuse.