Simpson Dishwasher was purchased from Noel Leeming on 30 October 2020. It has worked fine until now, when it abruptly refused to drain, making a clicking noise. I checked the water and drain hoses, and both were fine with airflow into the sump. Backwashing with a hose made no difference. Undid base, checked drain pump, impeller intact and spinning freely with no debris, which tells me the pump requires replacement. I'm not an expert, so I gave up at that point and went to buy a new one.