This was a rare short lived model, I don't think I never saw one that actually worked, the only one we ever had was a new DOA machine and we replaced everything and it never would work, we got WP to scrap the machine.
In the winter in some places, the water is very cold and the final spin spray was to warm the fabrics to make them less painful for arthritic hands to handle, while saving energy with a cold deep rinse.