Make sure that the water fill hoses are hooked up correctly, not
reversed. Verify that the correct temperature setting was selected. Your household water supply temperatures can have a very big effect on the wash water temperature. The temperature of the water can be influenced by the local climate, the room temperature where the hot water heater or washer is located, or by the thermostat settings of the hot water tank itself. You may have to adjust your hot water heater settings accordingly for the weather where you live.
If someone else is using hot water in the home at the same time, the Maytag washer parts may not receive the hot water it’s calling for. The best thing is to make sure the washer is full before using hot water elsewhere in the home.
The hot selection on the control panel causes only hot water from the hot water heater to enter the washer, while warm is the hot and cold water from the house mixing in the water-inlet valve body. Cold is just the cold water from the house.
If your washer has a temperature sensor inside, you may hear the water-inlet valve opening and closing several times to ensure the water temperature is within the temperature range that has been selected.
This is good general advice for all brands of washers including Whirlpool Washing Machine Parts and other brands of washers.