Is it this thing?http://uk.farnell.com/apem/q14f3bxxhb220e/indic-flush-black-blue-220vac-ip67/dp/2008588 If it is, then it's not just an LED but there must be some kind of circuit inside. Then it will depend on the kind of circuit. With a simple resistor, it would work (although the resistor would have to waste 217V * 0.003A = 0,65W and might get warm/hot). If there is a RC combination using the impedance of the capacitor to lower the current, it will not work with DC. Btw., where do you get the 220DV from? It's a quite unusual voltage.