Soap door no longer opens automatically.
The most likely cause for the units dispenser not opening on its own would be the wax motor. You will want to check to make sure that you check to make sure that there is 120 vac getting to the wax motor when the unit is calling for the dispenser to open. If it gets power then the wax motor is bad and would need to be replaced. The part number for the wax motor is 902899.