I'm assuming you have filled the water tank.
Check the pump first and make sure you have power to it. On a 223 it's located on the bulkhead next to the battery on the starboard side. Disconnect the wiring and put a meter or test light on it to see if you have power to the pump. If you do, the pump is bad. If you don't, then move up under the dash and see if either a wire has come disconnected or the breaker popped.