You have probably got a blockage in the pump. Something like a hair clip, cotton bud or excess fluff especially if you have been trying to wash fluffy items like mats. To confirm it, put machine on final spin and press start. If you can hear a humming sound coming from down low at front right then that is the pump trying to go but can't. Unblock the pump & it will be back to normal. If you can't hear any humming sound then it may be something more serious like a dead pump or faulty control board.
Lincoln Appliance NZ, January 2015