Cleaning a cordless iron

You can buy Iron cleaner from the supermarket. It will take alot of flushing. While you are at the supermarket buy some de- mineralised water NOT distilled water
You have been using normal water in the iron which leads to this problems.
Or you can by a Phillips gold based iron with a inbuilt flushing system in which you can use normal tap water. They retail for about $150.00 in Aust.