I have an 14 year old Miele tumble dryer that starts to heat up and then stops after about 15 mins and continues to blow cold air until dry. Obviously takes an age to dry anything. I have removed the heating element, thermostat and NTC sensor from the rear of the drum. I have tested the heating element and thermostat with a multimeter and both appear intact. The NTC sensor measures about 130k ohms at room temperature and resistance drops if I dip it in hot water - so that also appears OK. For the last year or so the dryer has intermittently gone straight to finish (within 10 mins of starting) without doing any drying but we've worked around this by turning off and on again which seems to clear the problem.
Please can someone advise what to do next. Thanks
Please can someone advise what to do next. Thanks