The thermal protection is present to turn the motor off when excessive heat is generated within the motor circuitry. Removing the thermal fuse.
How To Replace A Thermal Fuse In An Electric Dryer Repair Guide
Fan motor thermal fuse. For testing purposes you can temporarily bypass the thermal fuse to see if the fan runs. A wide variety of fan motor thermal fuse options are available to you such as iec csa. The thermal protector consists of one or more heat sensing elements built into the motor or motor compressor plus an external control device. Disconnect power to the fan before proceeding. Either dust prevent cooling or the bearing or the equivalent get wear out so much that the fan rotate more slowly. To make fuse replacement easier we need to free the motor from the control unit keeping its wiring harness as long as possible.
The thermal fuse will remove power when the motor becomes burning hot. A failure to start may be caused by faulty start windings in the motor. You can also choose from thermal low voltage fan motor thermal fuse as well as from fuse cutout other home appliance parts fan motor thermal fuse and whether fan motor thermal fuse is high or low. Its possible and perhaps even likely that the capacitor failed causing the motor to not spin and that caused the windings to overheat. A check of the continuity of each of the coils led him to this thermal fuse. When the motor seized the ac current built up a lot of heat.
In some fans the fuse is hidden inside one of the short fiberglass sleeves gold color bundle in the picture that cover the connections between the motor windings and the control wires. This happen soon or later for any fan. This fuse is made to burn out before a fire can. In both cases the motor can not cool down using part of the air draft it created.
Gallery of Fan Motor Thermal Fuse
