don't spend your money on a calc cartrage it will not get it out of standby.
the controll unit carnt tell if it needs replaceing!
if the standby light is flashing it means it carnt heat the steam tank. if the iron is not heating as well it is a buggerd control pcb!
if you live near Newcastle I could fix it for 20 pounds
Paul at Rochy dot com
Rochy
September 2012