Ice Cubes are Thin or Hollow - Built-In Refrigerator

Do you have the correct water pressure?

Hollow or small ice cubes, along with slowness, are likely due to low water pressure. 

Connecting a refrigerator to a reverse-osmosis system could also lower the water pressure to the refrigerator, which will result in small ice cubes, low ice production, or a decreased amount of water being dispensed. 

CLICK HERE for more information on using a reverse-osmosis system.

CLICK HERE for more information on getting the correct water pressure. 

Was the water line installed correctly? 

The refrigerator must be installed to a cold water supply for the ice maker and water dispenser to work. To connect the shutoff valve and the refrigerator, use 1/4" (6.35 mm) O.D. (outside diameter) soft copper or PEX tubing. It is recommended to leave a coil of copper or PEX tubing (service loop) to allow the refrigerator to be pulled out of the cabinet or away from the wall for service or routine cleaning. Water supply lines can be purchased at KitchenAid Purchase Genuine Parts. 

Check to make sure there are no kinks in the water supply line. A kink can reduce water flow. Straighten the water source line to restore adequate water flow and pressure. To help reduce the chances of a pinched water line, do not push the refrigerator too far back against the wall or cabinet.

Does the water filter need to be replaced?

It is recommended that the KitchenAid water filter be replaced every 6 months, when the indicator light comes on, or as needed. Replacing your water filter regularly helps to ensure a continual supply of cleaner, fresh-tasting drinking water. Depending on your usage and water quality, it may need to be changed more frequently.  A clogged or incorrectly installed water filter can reduce the water flow to the ice maker and dispenser, potentially causing low ice production and a slowed water flow. KitchenAid recommends using everydrop® water filters. Find the right replacement filter for your refrigerator, and make the simple switch for clean water year-round.

Take a look at Does the Water Filter Need to be Replaced?

Was the water filter flushed?

Flushing the system is needed every time the filter is changed or when it is first installed. Flushing your refrigerator water filter is a key step that reduces excess air, prepares the filter for use, and removes excess carbon. Air in the water system may cause dripping at the dispenser, small or hollow ice cubes, or a cloudy appearance in the water quality.  The amount of water needed to flush the water filter varies depending on the specific filter.  Some filters require 1, 2, or 4 gallons to be dispensed for a proper flush; refer to the water filter's instructions for specific guidelines.

Review How to Flush the Water System in a Refrigerator for more information.