Sounds like the filter on my Indesit. Make sure you get a spare from Espares first, as the problem may be a foreign body stuck between the filter and inlet hose. Use a pair of pliers and firmly work the filter clockwise and anticlockwise. With luck it will slowly yield anticlockwise and you can draw it out, beward some water will follow it !. Check for objects in the filter housing and actually at the pump impellor at the back, buttons, small coins or eve bits of wicker laundry basket, a avourite in ours. If you have the spare ready, then a broken filter is'nt a delay.