My Viking DFSB423D is making ice but the door ice & water dispenser isnt working. Dispenser is in ON position and the light turns on when paddles are depressed but no ice/water. No clicking sounds.

SOURCE: water dispenser in fridge door

I have same problem with GE monogram 42. ice maker works, water dispenser not. It does click but no water. Help.

SOURCE: water dispenser not working

2 possible problems.  
#1 water valve for the water side is stuck in the closed position.  Only way to tell is to pull the bottom kick panel out and look for the water line disconnect.  Separate the line, close the door and try to draw water through the dispenser.  If the water comes out of the disconnected line, then the water valve is good.
#2  if water is coming out of disconnected line, then the problem is in the freezer door.  There is a heater that keeps the water line from freezing inside the freezer door.  It is not repairable!!  The freezer door has to be replaced.

SOURCE: No water to door dispenser

The water lines might be frozen. The found the water lines in my fridge behind the bottom drawers and used a hair dryer to melt the ice.

SOURCE: Kenmore Elite refrigerator ice and water dispensers not working

check for a child lockout button it will look like a tiny padlock ,press and hold for 3 sec.(could be the freezer door light switch)

SOURCE: FRIGIDAIRE SIDE BY SIDE ICE DISPENSER

Have same or similar problem. MY problem turns out to be that the Auger turns fine, but there is a little metal blade that attaches to the end of the auger and transfers the spin action into this auger "hopper" (for lack of a better term) which actually accepts the ice that has been moved from the back of the ice bucket by the metal auger and then dispenses the ice into the hopper which falls into the glass. the issue is one of crappy design. It turns out that this little blade has a rectangular opening in the middle that the rectangular end of the auger fits into. If this rectangle opening gets stripped (as mine has done, and ALL are likely to do) then the auger spins, the ice is moved forward but none are picked up by the hopper, and none (or very few) fall into the glass.
Everyone should check to see if this is the case. If so you may need to order a new blade, or a new auger, or a new refrigerator.

Good Luck!