WHES30 is very similar to my old GE Smartwater Profile. It will regenerate on demond or on calendar up to 15 day max.
I thought my old GE water softener isn't working because it isn't generate any soft water... Check if the display will give you water usuage information. If not, that mean the valve isn't counting down the water. The valve could be bad or it needs to reset.
What I did is shut off the main water valve to house and turn on fraucets to drain out the water within the pipes, then turn on the main water valve. Somehow my old GE softener start showing the water usuage and back to normal... too bad I have already order the new water softener...
I'm not the expert but why not give it a try.