Hi, it would be obvious that the excess soap along with the tartar is plugging the existing bubble "gum" in the base of the drum where it inserts the manguerita that goes up to the pressure switch screwed to the bottom of the cabinet, disconnect the manguerita of the pressure switch and blows by it towards the drum, it would have to hear a bubbling with hardly to blow it if it is not so it will have to clean, situation in the hose of discharge of the box of detergents, exceedance of soap that does not allow to drain freely, check underneath the box, the hose. regards