Re Whirlpool model WFW8640BW0.
On all programs and all settings the washer appears to be heating the water to an extremely high temperature. I.e. the water appears to be hotter than the temperature of water from our water heater. ..... It is possible that it is only filling with hot water, but given that even after an hour or more the water is extremely hot, there must have been some heating by the washer because [1] water from our water heater would have cooled down, and [2] new water drawn in would be cool as the water heater is a long way from the washing machine.