Ice Maker Running Water into Collection Box?

We have a Kenmore side by side. At times the icemaker will not eject the cubes and when the water comes back on to refill it runs into the collector box. When this happens the whole thing freezes into one huge chunk. We then have to remove the ice maker box and chip out all of the ice.

This does not happen every time so we try to keep an eye on it and keep it turned off when we have enough ice.

By pete