The pump is likely blocked, there should be a filter you can remove to check, usualy its on the front panel of the machine near the bottom or under a plastic panel, unscrew it and remove any obstruction, also check the waste hose is straight and not pinched anywere and not positioned too high.
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The pump is likely blocked, there should be a filter you can remove to check, usualy its on the front panel of the machine near the bottom or under a plastic panel, unscrew it and remove any obstruction, also check the waste hose is straight and not pinched anywere and not positioned too high.