If you get cold water when you set the washer for a hot-wash load, first make sure the water heater is doing its job. (FYI, if the water is warm instead of hot, your ENERGY STAR washer is following Department of Energy standards that limit hot water to 85-95 degrees F for the Normal cycle.)
If the water heater is fine, or if the water comes into the washer warm when you set it for cold, then the water temperature selector switch, electronic temperature control board or main electronic control board may need to be replaced. The washer also won't fill with the right temperature of water if the hot or cold valve on the water inlet valve assembly fails so replace the water inlet valve assembly if a valve fails.
These repairs may help solve your washer problem
Replace the washer temperature selector switch
The temperature selector switch lets you set the temperature of the water going into the washer. The temperature selector switch switch is usually a rotary switch mounted in the control panel. If the switch fails, the washer won't fill properly or might not fill at all. If one of the water inlet fill valves isn't actuated because of defective contacts in the switch, the actual water temperature differs from the set temperature.
Is your top-load washer filling with water that's the wrong temperature? It could be a faulty water temperature switch. This DIY repair guide and video show how to easily replace the water temperature switch in less that 30 minutes.
Replace the washer electronic temperature control board
The electronic temperature control board has a thermistor (a temperature sensor) that detects the temperature of the water entering the tub. The electronic temperature control board opens and shuts the electrically operated water inlet valves to accurately fill the washer tub with the correct temperature of fill water. If the electronic temperature control isn't controlling the fill water temperature properly, replace it.
Replace the washer water inlet valve assembly
The water inlet valve assembly is a set of electrically operated water valves that control the fill function in the washer. Replace the water valve assembly if the washer won't fill because a valve doesn't open or if the washer overfills because the valve doesn't close.
When a top-load washer won't fill, or it fills with water even when unplugged, chances are the water inlet valve is to blame. This repair guide and video show how to replace the water inlet valve in 30 minutes.
Is your top-load washer not filling with water, or is it filling even when it's unplugged? Suspect the water inlet valve. This DIY repair guide and video explain how to replace the water inlet valve in less than 30 minutes.
If your front-load washer won't fill with water, or if the washer fills with water even when it's unplugged, the problem could be the water inlet valve. This repair guide and video explain how to replace the washer water inlet valve in 30 minutes or less.
A failed top-load washer electronic control board can cause multiple problems, from no display lights to the washer not filling, spinning or draining. If you or a service technician determine that the electronic control is faulty, this repair guide and video show how to replace it.
A failed front-load washer machine control board has several symptoms, including the washer not starting, filling, spinning or draining. If you or a service technician determine that the machine control board has failed, this repair guide shows how to replace it.