Patent ID: 7866059

Claim:
A method of controlling a dryer, comprising the steps of inputting dry conditions and operation commands; turning a safety relay on; turning a motor relay and a heater relay on after the safety relay is turned on; processing a drying operation by turning on the safety relay, the motor relay and the heater relay according to the operation commands, the motor relay and the heater relay being connected in parallel and to the safety relay; and finishing the operation of the dryer as the drying operation is completed, wherein the motor relay is turned off after the heater relay is turned off when an abnormal stop occurs during the drying operation, the safety relay is finally turned off after the motor relay and the heater relay are turned off to cut off the electric current, and wherein the drying operation is normally carried out according to the dry condition and operation commands if the cause of the abnormal stop is solved, and the operation of the dryer is terminated if the cause of the abnormal stop is not solved.