Hi Louise
Is your model HIN001 if so self clean can be done by not connecting to the mains, remove water tank fill to max with cold water. Then replace water tank and set temp dial to min setting. plug in and switch on. wait for temp and stand by indicator to go out. hold iron over sink and press steam button for 3 mins. turn temp dial to max and iron damp old cloth to remove deposits from iron. Turn temp dial to min setting, turn off and unlug. remove and empty water tank. I have just purchased this model a little disappointed with it, does steam only emit from the top holes or could mine be faulty?
Teresa Boyle, August 2009