Where can I get instructions on how to replace part #AP4356190? Also, what does this part do?
Answer Hello Marcia,
Discontinue the power supply to the unit first. Remove the drip tray and grasp the bottom of the escutcheon where the tray was and pull down and out while holding the door shut with your leg. When the bottom snaps off, lift it to unhook it from the top of the door mount. I normally recommend to use your cell phone to take a few pictures from different angles of the wiring on the back of it to aid in the re-assembly process. Remove the wires and lay the assembly on a towel to prevent damage to it or the countertop. Remove the screws and replace the board with the new one. Re-assembly is the reverse of the dis-assembly. Don't forget to plug the unit back in to prevent food loss.
This board is in effect the control circuit for the dispenser which allows the user to choose from various pre-programmed functions.