<p>The present invention relates to a dryer (1) wherein a multitude of different malfunctions such as the transmission means (4) not operating, for example the breaking of the belt, the fan (8) not rotating, or insufficient load (L) can be detected by monitoring the pressure (P) characteristic of the air flow in the circulation channel (7) by means of the pressure sensor (10) and the use of different sensors for the detection of these malfunctions is rendered unnecessary since the utilization of only one pressure sensor (10) is sufficient.</p>
