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The easiest way to diagnose ice maker issues is to manually fill the ice maker with water. If it dumps the cubes in a few hours but does not refill the ice maker tray, then there is a problem with the water fill, like a frozen fill tube or a faulty water inlet valve. If it does not dump the cubes, then the issue is with the ice maker itself or the temperature is too high and not allowing the harvest to start. Let me know what happens, please.