Why Your Samsung Ice Maker Needs Defrosting

Your Samsung RF28R7351SG ice maker stops producing ice when frost builds up inside the freezer compartment or directly on the ice maker's evaporator coils. This frost acts as an insulator, preventing the coils from getting cold enough to freeze water. The ice maker has a defrost cycle built in, but sometimes you need to manually defrost it to restore full function—especially if you notice no ice coming out, ice cubes that are smaller than usual, or the ice maker running but producing nothing.

Manual defrosting takes between 24 and 48 hours depending on how much frost has accumulated. The process is straightforward: you turn off the ice maker, let the frost melt naturally, and then dry the compartment before turning it back on. You do not need to empty the entire freezer or call a technician for routine frost buildup.

Key Takeaways

  • Turn off the ice maker using the control panel or the dedicated switch on the back of the unit, then wait 24 to 48 hours for frost to melt naturally.
  • Place towels or a shallow pan under the ice maker to catch water as the frost melts, since the defrost drain may not handle all the water at once.
  • Wipe down the ice maker compartment and evaporator coils with a dry cloth once the frost has melted, then leave the door open for 30 minutes to air-dry completely.
  • Turn the ice maker back on only after the compartment is completely dry; running it while wet can cause frost to reaccumulate when ready.
  • If frost returns within a week, the defrost cycle itself may be failing and the ice maker may need service.

Locate and Turn Off the Ice Maker

The RF28R7351SG has two ways to stop the ice maker. The easiest is the ice maker power button on the refrigerator's control panel—usually on the front door or inside the fridge near the top. Press it until the light next to it turns off. This disables the ice maker without affecting the freezer temperature.

If you cannot find the button or it does not respond, locate the ice maker switch on the back wall of the freezer compartment, near where the ice maker sits. Flip it to the off position. Some models also have a manual shutoff lever you can push up to stop the mechanism. Once the ice maker is off, you will hear it stop running—no more humming or water sounds.

Set Up to Catch Defrost Water

As the frost melts, water will drip down. The refrigerator has a defrost drain at the bottom of the freezer, but during heavy defrosting it can overflow or drain slowly. Place a shallow pan or baking sheet on the floor directly under the ice maker, or lay down several layers of towels to absorb the water. This prevents water from pooling inside the freezer or leaking onto your kitchen floor.

If your freezer has a removable ice bucket, take it out now. This gives you better access to the ice maker and prevents water from splashing into the bucket. Set the bucket aside in a safe place—you will reinstall it once defrosting is complete and the compartment is dry.

Wait for Frost to Melt Naturally

Leave the freezer door open slightly—just enough that you can see inside but not so wide that warm air floods in constantly. The combination of the slightly warmer air and the ice maker being off will cause the frost to melt over the next 24 to 48 hours. Do not use a hair dryer, heat gun, or any other heat source; these can damage the plastic housing or the water lines inside the ice maker.

Check the pan or towels every 12 hours and empty them if they are getting full. If water is draining very slowly, the defrost drain itself may be partially blocked. You can pour a small amount of warm (not hot) water down the drain opening at the bottom of the freezer to help clear it, but do not force anything into the drain with a tool.

Dry the Ice Maker and Compartment

Once the frost has melted and no more water is dripping, use a clean, dry cloth to wipe down the ice maker housing, the evaporator coils (the metal fins you can see), and the walls of the freezer compartment. Pay special attention to any grooves or crevices where water collects. Moisture left behind will refreeze as soon as you turn the ice maker back on, defeating the entire defrost.

Leave the freezer door open for at least 30 minutes after wiping to allow any remaining moisture to evaporate. You can speed this up by placing a small fan nearby to blow air into the freezer, but do not use heat. The compartment should feel completely dry to the touch before you proceed.

Reinstall the Ice Bucket and Turn the Ice Maker Back On

Slide the ice bucket back into place under the ice maker chute. Make sure it sits flush and does not block any water lines or sensors. Then press the ice maker power button on the control panel to turn it back on. You should hear it hum and click as it starts its cycle. The first batch of ice may take 2 to 4 hours to produce, and the first few cubes might be smaller or slightly cloudy—this is normal.

If the ice maker does not make any sound when you turn it on, or if it makes noise but no water flows, check that the water line behind the refrigerator is not kinked or frozen. The water inlet valve may also need cleaning if sediment has clogged it, but that is a separate repair beyond defrosting.

What to Do If Frost Returns Quickly

If frost builds up again within a week of defrosting, the automatic defrost cycle is not working properly. The RF28R7351SG has a defrost timer and heating element that should melt frost automatically every 8 to 12 hours, but if these components fail, frost will keep returning. At this point, manual defrosting becomes a temporary fix rather than a solution.

Contact Samsung support or a certified refrigerator technician to inspect the defrost timer, defrost heater, and defrost thermostat. These parts are not user-replaceable on this model, and attempting to access them yourself will void the warranty. A technician can diagnose which component has failed and replace it.

Frequently Asked Questions

Can I use a hair dryer to speed up defrosting?

No. Heat from a hair dryer or heat gun can melt the plastic water lines inside the ice maker or damage the electronic components. Stick to natural melting with the door cracked open. It takes longer but prevents costly damage.

What if water is leaking inside the freezer instead of draining out?

The defrost drain at the bottom of the freezer may be blocked by ice or debris. Pour a small amount of warm water down the drain opening to clear it. If water still pools, the drain line may need professional cleaning—do not try to force a tool into it.

Do I need to empty the entire freezer before defrosting?

No. You only need to remove the ice bucket and any items stored directly in front of the ice maker. Food in other parts of the freezer will stay frozen as long as you do not leave the door wide open for hours at a time.

How often should I manually defrost the ice maker?

Under normal use, you should not need to manually defrost more than once every few years. If you are defrosting more than twice a year, the automatic defrost cycle is likely failing and needs professional service.

Will defrosting affect the ice already in the bucket?

Once you remove the ice bucket, the ice inside will start to melt if the freezer door stays open for extended periods. If you want to keep that ice, transfer it to an insulated cooler before you begin defrosting.