water tank full but steam wont come through
If you can here the valve working then your pretty much there. Open the drain plug and empty. Then put some white vinegar in and replace the drain plug. Shake well. Put some water in the tank. Leave to heat up and stand for a few minutes then keep pressing the button in short blasts at first. watch the sludge come out. Keep going until no more sludge comes out. Done this myself and it works very well
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Tefal pro express gv 8110?