In article , Harry Bloomfield
writes
alan_m wrote on 07/11/2020 :
The main reason is that to remove many common stains a cold wash is
first required in order not to cook them in and make them permanent.
The water is then brought up to temperature if required.

A hot and cold fill machine could still allow a cold fill, if needed.
A) Much simpler and usually more efficient to cold fill then heat. With
hot fill given that some cold water will enter first it is then
necessary to input the hot water at a higher temperature than the final
target. This may be too high for the wash content.
B) It's an EU rule.
--
bert