Renault Clio 1998 Mk 2 - heater blower not working?

Hi,

My heater blower is not working on my 1998 Mk 2 clio. I have read the other post on this problem, have removed fan tested connection etc and refixed and hte blower works fine for a while and then usually dies again after a week (if lucky).

Do you think it could be the blower unit itself that is faulty and go buy a new one or could it be the resistor?

Many thanks