Id say you either have a bad valve that distributes the filtered water to both the freezer for ice and refrig for chilled water. This is a one input (filtered water) and two output valve probably located in the lower rear of the refrgigerator.
Or, the trough that the water goes down to refill the icemaker is simplly frozen. If water from the prvious unit was impeded and it was dripping as it came into the trough it may have frozen causing a blockage so no water can get into the ice tray. that part should pull out of the rear on the trop side of the freezer and you simply run hot water on it to thaw it out and re install in and reconnect the water line to it.
good luck | 
Ice maker does not make ice 
