Whirlpool Model#ET9FTTXLT11 Serial#EM2421915 Top Freezer inside Water Dispenser. My water dispenser and ice maker stopped working. I replaced the #2219594 water valve which did not help. I discovered that there is another water valve #2219592. Will replacing that work or is there something else I should check first. I did check the water pressure in the water line coming from the water supply line, it is OK.