If your Bosch refrigerator is making dirty or discolored ice, start by looking at the water supply tube to the ice maker. Tubing that sits unused or was disconnected can stain when water sits for 6 to 12 months, so replacing the supply tube is the most likely fix. Next, inspect the ice maker assembly and tray; a worn or corroded coating can flake off and leave chunks or residue in the ice, so replacing the icemaker often solves the problem. Less commonly, dirty municipal water after a hydrant flush or a broken main can introduce sediment, so dump the old ice and run faucets until the water clears. Finally, residue from an old water filter can discolor ice, so replace filters every six months. These steps address dirty-ice symptoms and other ice maker problems, from ice maker not making ice to general ice maker repair needs. Enter your model number on RepairClinic.com to find the exact replacement water supply tube, ice maker assembly, or filter for your refrigerator.
01 - Bosch Refrigerator Water Supply Tube
During normal use the water supply tubes will have water flowing through them keeping them clean. If the water supply gets disconnected or water is left in the tube and not used for 6 to 12 months, it can become discolored. If the water at the other faucets in the house is ok and you have replaced the water filter you may need to replace the water tubing to the ice maker to resolve the issue.
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If the icemaker tray has a coating, the coating may be wearing off. If you are getting pieces or chunks of material stuck in the ice, check the ice maker tray. If the coating on the tray is corroded and flaking off, replace the icemaker.
A fire hydrant that was flushed or a broken water main can cause dirty water to enter the home. Since the ice maker uses the same water supplied to the kitchen or bathroom faucets, dirty water can discolor the ice. Discard the old ice and run the water for awhile at the kitchen or bathroom faucet until the water clears up before having the ice maker make new ice.
Less Common
04 - Bosch Refrigerator Water Filter
If the ice being dispensed is dirty, it's possible that residue from an old water filter is getting into the water being supplied to the ice maker. Water filters should be replaced every six months for optimum water filtration.