Why are there hard deposits in the boiler of my eurosteam iron?

you sure on the model number as it is not in
http://www.sav.rowentausa.com/Pages/instructions.aspx
suggest re checking the reference number as shown on the web page at rowenta it may be different and searching for it in the web page as I am having hard time finding anything for DW1040

fill out the card and post it off or contact the service department of the company( manufacturer)

depends on how old it is, try to rinse it with a water and vinegar solution, this might help

try it in another power point , otherwise have it repaired at a service center . not suitable for home repair.

Have you tried a descale ?

what is exact problem

Note sure if its the same thing but my boiler (halstead Best 50) made a ringing sound just like you describe. It was the flue fan blades just catching the metal surround of the flue vent on occasions. It only happened when the boiler had been running a while. A new fan was fitted and everything ok now.

Seems silly... but is it plugged in to a live outlet? Does it have water?

I never saw an iron with a retractable cord . The cover would have to be large enough to accomodate the cord and the heat from the iron could melt the cord. Are you sure it supposed to work like that?

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