1, "Tiny Cooling Fan" suddenly stopped working, in addition to the timer, the problem of power supply lines,
2, there may be some fans in fused, it will make the circuit fuse the barrier without work.
3. If there "Tiny Cooling Fan" stopped but the motor is still "Om ---" sound during operation, it may be the motor windings (coil) disconnection fault occurs (generally "blow" a),
4. If you are running normal, but do not stop and then start to turn, and the motor has "Om ---" sound, but with a thin object (such as wire, thin strips of wood and the like items) poke fan It can turn, but the speed is slow, it may be the "Tiny Cooling Fan" in the start capacitor is broken, if the dial is not yet transferred, it is possible to start winding coil motor blew.