Reasons why a thermostat fails
The rate of flow of air through the tumble dryer can and will affect the operation of the dryer, and may well cause a failure of the thermostat itself.
In a normal drying cycle, the drum will rotate, and may even reverse the rotation. They cycle will depend on the settings you choose, but a timer will be slowly counting down the drying time, either mechanically or electronically.
Cold air is drawn into the machine, this passes over or through a heater and into the drum. The clothes will then be ‘tumbled’ through the heated air. The resulting cooled air will then be either passed out through a ventilation hose, or through a condensing element.
If the air is blocked and not allowed to pass through the appliance, this will have an effect on the operation. The tumble dryer can overheat and the safety mechanism will be tripped into operation, cutting off the power to the appliance. Read More Here…