(57) In a clothes washing machine that comprises a washing tub (4) containing a drum (5),
and is adapted to carry out a rinse cycle with water at a level (L3), as well as a
water discharge phase down to a minimum level (L0), the method calls for:
- during the discharge phase (t1-t4), the time interval (T) to be measured, which elapses
from an instant (t2), in which the water in the tub lowers to a level (L2) corresponding
to the bottom of the drum (5), to a subsequent instant (t3), in which the water decreases
down to a level (L1); and
- when the so measured interval (T) is detected to be longer than a given threshold
value (Tr), a signal to be generated which is indicative of a clogged state of the
lint filter (7).
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