Patent ID: 7891113

Claim:
A clogging degree deciding method for a dryer, comprising: reading information as to clogging of an air passage; and displaying, on a display unit, information indicative of a clogging degree of an exhaust duct or a clogging degree of a filter in accordance with the read clogging information, wherein the clogging information comprises an ON/OFF duty ratio of a temperature control member, and wherein the displaying comprises: (a) comparing a difference between two ON/Off duty ratios stored with a filter-clogging determination reference value, the two ON/OFF duty ratios corresponding to different points in time over operation of the dryer; and (b) determining the clogging degree based on a result of the comparison, the clogging degree providing an indication of interference of air flow through the air passage by an obstruction within or affecting flow of air in the air passage, said method further comprising: determining a clogging location based on the OFF duty ratio of the temperature control member, the clogging location corresponding to a lint filter when the OFF duty ratio falls within a first range and the clogging location corresponding to the exhaust duct when the OFF duty ratio falls within a second range.