(57) Disclosed is a method to operate a laundry drying machine 1, wherein the laundry
drying machine 1 comprises: a control device 12, an accommodation chamber 3 for accommodating
laundry, an air circulation channel 7 in communication with the accommodation chamber
3, and a condensation valve 14 for supplying water into the air circulation channel
7 to condense humidity from air coming from the accommodation chamber 3; the method
which comprises executing a preheating step S1; in the preheating step S1, providing
heated air in the accommodation chamber 3 and turning off the condensation valve 14;
the method further comprising: performing a detecting step S2 for detecting condensation
water after the preheating step S1; in the detecting step S2, stopping providing heated
air in the accommodation chamber 3, turning on the condensation valve 14, and determine,
according to a temperature change at a specific position in the air circulation channel
7, a quantity of water supplied by the condensation valve 14. Also disclosed is a
laundry drying machine 1 that can implement such method.
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