if you open the bonet on ford festar you will find a resistor mecanisum with two pipes goin in amd two pipes coming out the two pipes which come out go to heaters in car if you change this mecanisum it is the same on ford K.A and feasta this will cure your problem the part from fords is around £50 on ebay the same part is around £30 thanks Laney .
laney, February 2009