Splendide washer/dryer takes hours to dry load

[PIExpress]

Our Newelll is equipped with a Splendide washer/dryer. The washer works well, and the dryer although a bit slower than our one at home, has been fine until recently. It now only seems to reach a warm drying temperature and can take up to two hours to dry a very light load.

Has anyone had this problem - and more importantly - rectified it? I have no equipment for continuity-testing, but I wonder if there is perhaps other more generic diagnosing I can do myself before engaging service personnel?

Thanks

PIExpress