Ice maker makes hollow ice - Marvel Appliance Ice Maker

Hi,
Hollow ice cubes are a result of lack of water to ice maker. This can be caused by lack of water pressure (clogged filter, bad water valve, obstructed fill tube, etc..) you will need to find the cause to correct this hollow ice cube issue. The ice maker should take on 5.5 oz of water when it cycles (2/3 cup). Mot of the time its a water supply issue and the line could be kinked behind the unit as it was rolled back into place.

Good Luck

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in the ice maker there is a series of small pipes about an inch long emersed in a tray of water,the gas flows throught these pipes frezzing the water making the ice and thats why its hollow in the middle

Hollow ice is usually caused by not having enough water in the mold. A strainer before the inlet valve where the water supply connects can get stopped up restricting flow.
Or look for an adjustment behind the plastic endcover on the ice maker with a +/- on it. - is less water.

Hollow ice is a sign of not enough water going into tray . Replace the water inlet valve (piece that the wall water line connects to on refrig ) .

Whats happening is the ice isnt freezing all the way. Try cleaning your condensor's under the frig.In Hotter weather when condensor's get filled with dust it causes the frig to cycle to ofeten. In turn your cubes aren't freezing all the way.

some fridges are designed to make hollow cubes where they always hollow or just recently

Most ice makers have an adjustment screw to control the cube size. Its usually hidden behind a plastic panel on the front of the ice maker. A quarter turn either way and some trial and error testing should get you pointed in the right direction to your ideal ice cube.

Hollow cubes are usually a result of lack of water supply

Low water pressure usually the cause of that, just like when you get hollow ice cubes as explained here:
http://www.applianceaid.com/icemaker.html#hollow (http://www.applianceaid.com/icemaker.html#hollow)

check your incoming water pressure, change the water filter recently? hollow ice cubes is a sign of low water pressure