Hi! For information on care and cleaning for model WRS321SDHZ please visit the Owners Manual at https://s3.amazonaws.com/sm-backend-production-attachments/userguide-w10407342-revb-eco.pdf Below are also steps in cleaning the ice maker.
Step 1: Remove ice bin from freezer
Before cleaning your ice maker, be sure to turn off the unit and disconnect the refrigerator’s power supply. Remove the ice bin from the freezer by placing your fingers into the hole at the base of the bin and squeezing the latch to release it. Once released, lift the bin up and pull it straight out.
Step 2: Remove ice from the bin
Empty the remaining ice into a bucket or sink and check to make sure that there isn’t any leftover ice frozen onto the bin. If there is, use warm water and a washcloth to melt the ice and remove it.
Step 3: Clean the ice dispenser chute
If ice is not being dispensed regularly by the ice maker, it may be necessary to clean out the ice dispenser chute located beneath the ice storage bin. Using a warm washcloth, wipe down the chute to melt and dislodge the built up ice particles, making sure to dry it thoroughly once you’re through.
Step 4: Clean the ice bin
Using a warm washcloth and an approved ice machine cleaner, wipe down the ice bin until it is free from all residue. Be sure to thoroughly dry the bin before placing it back into the freezer.
Step 5: Run a few cycles
Once you have finished cleaning and replacing the ice maker bin, run and discard a few cycles of ice to ensure all solution has been removed from the system. Thank you for your inquiry about our Whirlpool® appliances.

Hello! To keep everything running smoothly, it's best to swap out your water filter every 6 months, or sooner if you see the indicator light pop on. If the filter gets a bit clogged, you might notice the water flow slowing down at the dispenser or the ice maker not keeping up like it usually does. Whirlpool really recommends using everydrop® water filters to get the best results. You can easily find the specific one you need for your fridge right here: https://www.everydropwater.com/. Thanks so much for reaching out to us about your Whirlpool® appliances!

Hello! Please reach out to Best Buy's dedicated Customer Care team directly at 1-888-237-8289 for further assistance with your inquiry. Thank you for reaching out. We appreciated hearing from you.

Hello! We are sorry to hear about your concern with your Whirlpool Refrigerator. Please review the following professional troubleshooting tips for this concern:

Ice Maker Operation/Reset:
If the ice maker is making ice but not dumping it, try a reset. Unplug the refrigerator for one minute, then plug it back in. Wait a couple of hours and check for ice production.
A common reason for no ice production is that the ice maker was accidentally turned off. You can try a power cycle (unplug for one minute) or use the reset button (if available) for a few seconds. Refer to ""How to Turn the Ice Maker On"" (https://producthelp.whirlpool.com/Refrigeration/Full-Size_Refrigerators/French_Door_Bottom_Freezer_Refrigerator/Ice_and_Water_Concerns/Ice_and_Dispenser_Concerns/Ice_Production/Not_Making_Ice/Not_Making_Ice_-_Refrigerator#s13394 ) for more information.
If the ice maker is on but not connected to a water supply, it can cause a buzzing noise and lead to the refrigerator or freezer sections becoming too cold, potentially freezing food in crisper drawers.

Water Filter Status: (Possibly the red light you are seeing.)
Recent Replacement: Ensure a newly installed water filter is locked into place for a proper seal. An improperly installed filter can reduce water flow, decrease ice production, or cause leaks. To check, remove the filter and dispense water; if water dispenses, the filter was installed incorrectly and should be reinstalled.

Filter Replacement: It is recommended to replace the Whirlpool water filter every 6 months or when the indicator light comes on. A clogged filter can reduce water flow to the ice maker and dispenser, resulting in low ice production. Whirlpool recommends using everydrop® water filters. Find the right replacement filter for your refrigerator at https://www.everydropwater.com/.

Flushing the System: Flushing is necessary every time the filter is changed or initially installed. This key step removes excess air and carbon. Air in the system can cause dripping at the dispenser, small/hollow ice cubes, or cloudy water. The required amount of water to dispense for a proper flush varies; refer to your filter's instructions (typically 1, 2, or 4 gallons).

Water Line Installation:
The refrigerator must be connected to a cold water supply using 1/4"" (6.35 mm) O.D. soft copper or PEX tubing. A service loop of tubing is recommended to allow the refrigerator to be pulled out for service.
Check for kinks in the water supply line, as this reduces flow. Straighten the line and avoid pushing the refrigerator too far back against the wall or cabinet to prevent pinching the line.

If these troubleshooting steps do not resolve your concerns, please feel free to reach out to us through any of the following options:
Facebook: https://tinyurl.com/Whirlpool-Facebook
Instagram: https://tinyurl.com/Whirlpool-Instagram
Live Chat: https://www.whirlpool.com/services/contact-us.html (Tuesday - Friday, 8 AM - 6 PM ET)
USA Customer Service: 1-800-253-1301 (Monday - Friday, 8 AM - 6 PM ET)

We look forward to connecting with you soon!