Can I fix my Zanussi ZWD12270W1 wash/dry ?

The mc. is almost 4years old the washer works perfectly but will not dry. also the timer runs fast, dryer only, (1 hrs. dry takes less than 1/2 hr.) An error check shows E72.
I'm an average DIY'er so, can I fix it myself or do I need to call in the experts Many thanks for your help