Ice maker freezing over
In this step-by-step repair guide, I’ll walk you through fixing the ice maker freezing over on your Samsung RF23M8070SR (French Door). With the right tools and parts, you can complete this repair in just 1–2 hours, saving yourself a costly service call.
🔨 Pro Tip from Dave
In my experience with the RF23M8070SR, many technicians jump straight to replacing the ice maker assembly without realizing that the real issue could be the dual water inlet valve — specifically the ice maker solenoid side (part DA97-07365G). If that valve doesn’t fully shut off, you’ll end up with a slow drip that refreezes the tray within days. Always test the valve resistance before you finish up; otherwise, you may find yourself returning for a callback.
Part of our Top 20 Refrigerator Models & Common Repair Issues Guide. Browse all refrigerator repair guides for related models and issues.
Common Symptoms & Causes
If your Samsung RF23M8070SR ice maker is freezing over, you’ll likely see one or more of the following warning signs before it completely stops producing ice:
- Ice cubes are clumped together in a solid frozen mass inside the ice bin
- The ice maker arm is stuck and won’t cycle, blocked by ice buildup
- A visible sheet of frost or ice covers the ice maker unit behind the freezer door panel
- The ice dispenser is jammed and returns no ice despite the bin appearing full
Typically, this issue stems from a faulty ice maker defrost sensor, a worn door gasket that lets in warm air, or a failed defrost heater that allows frost to build up unchecked around the ice maker assembly.
Safety First
- Unplug the refrigerator from the power outlet before starting any repair — never work on a live appliance.
- Shut off the water supply valve before disconnecting any water lines or hoses.
- Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
- Take photos with your phone before disconnecting any wiring harnesses or connectors.
- Work in a well-lit area with enough floor space to lay removed panels flat.
Tools & Parts Needed
Essential Tools
- Phillips #2 screwdriver
- ¼” nut driver
- Needle-nose pliers
- Multimeter
- Flashlight or work light
Replacement Parts
- Defrost heater
- defrost thermostat (bi-metal)
- defrost control board
- multimeter
Step-by-Step Repair Instructions
Step 1
First things first: unplug the refrigerator from the wall outlet and remove all food from the freezer compartment. This not only eliminates the risk of electric shock but also gives you clear access to the interior components. Pro tip: pack perishables in a cooler with ice to give yourself time to work without the pressure of food spoiling.
Step 2
Next, remove the five Phillips #2 screws securing the freezer back panel and pull the panel away from the wall. If you see heavy ice buildup on the evaporator coils behind this panel, it’s a sure sign of a defrost system failure — the heater isn’t cycling on to melt accumulated frost, which can block airflow and stop ice production. Safety note: the panel edges can be sharp, so make sure to wear work gloves during removal.
Step 3
Set your multimeter to Rx1 and probe both terminals of the defrost heater, which is the looped element woven through the evaporator coils. A healthy heater should read 20–50 ohms; if you get an open circuit (OL or infinite resistance), that means the element has burned out and needs replacing. This test will tell you definitively whether the heater is the root cause before spending money on additional parts.
Step 4
Find the bi-metal defrost thermostat clipped to the evaporator coils — it acts as a safety cutoff that opens the heater circuit if temperatures get too high. Test it with your multimeter on the continuity setting at room temperature; you should hear a beep or see near-zero resistance, confirming the contacts are good. If you get an open reading at room temperature, the thermostat has failed and needs replacing.
Step 5
If both the heater and thermostat test good, the defrost control board timer is likely the culprit. You can confirm this by manually advancing it. Insert a flat-head screwdriver into the timer shaft slot on the board and turn it clockwise until you hear a click, which forces the unit into a defrost cycle. If the heater doesn’t activate and start melting ice within 30 minutes, the control board is faulty and must be replaced.
Step 6
Finally, reattach the freezer back panel using the five Phillips screws, ensuring the panel sits flush with no gaps that could let in air. Plug the refrigerator back in and allow at least 12 hours for temperatures to stabilize before restocking food. Loading a warm unit too soon can strain the compressor and mess with your results. Pro tip: place a thermometer in the freezer to confirm it reaches 0°F before considering the repair complete.
Where to Buy Replacement Parts
- Samsung RF23M8070SR defrost heater DA47-00244B
- Samsung refrigerator defrost thermostat DA47-00139C
- Samsung refrigerator defrost control board DA41-00651R
When to Call a Professional
If the issue continues after you’ve completed all the steps above, the problem may involve the sealed refrigerant system, a failed main control board, or wiring that requires specialized diagnostic equipment. At that point, it’s best to contact a licensed appliance technician — attempting repairs on the sealed system without EPA 608 certification is illegal and unsafe.
How Much Does This Repair Cost?
| Repair route | Typical cost |
|---|---|
| Do it yourself | $20–$80 (parts) |
| Professional repair | $150–$300 (parts and labor) |
DIY parts for fixing a freezing ice maker on the Samsung RF23M8070SR typically range from $20–$80, depending on whether you need a new ice maker assembly, door gasket, or defrost components. A professional service call for this repair usually costs between $150–$300 just for labor. Doing it yourself can save you $100 or more.
Frequently Asked Questions
Why does my Samsung RF23M8070SR ice maker keep freezing over?
The most common cause is a faulty defrost cycle or a damaged door gasket that lets warm air in, leading to frost buildup around the ice maker assembly. Checking the gasket seal and running a manual defrost cycle is a good first step.
How do I manually defrost the ice maker on this model?
Press and hold the Energy Saver and Freezer buttons simultaneously for about 8 seconds to enter Forced Defrost mode. Select the FF option to defrost the freezer compartment where the ice maker sits.
Will fixing the ice maker require replacing any parts?
In many cases, you may need to replace the ice maker fan motor or the water inlet valve if they are contributing to the freeze-over problem. Fortunately, both parts are widely available and relatively affordable for the RF23M8070SR.
Recommended Products
Here are the parts and tools I recommend for this repair, based on compatibility and customer reviews:
- Refrigerator Ice Maker Assembly Replaces for Samsung RF23M8070SR RF23J9011SR RF23J9011SR/AA RF23M8070SG RF23M8070SG/AA RF23M8070SR/AA RF23M8090SG RF23M8070SG/AA-0000 RF23M8070SR/AA-0000 Refrigerator
- Refrigerator Ice Maker Assembly for Samsung RF23M8070SR/AA-03
- SAMSUNG DA97-17285A Refrigerator Ice Bucket & Auger Assembly, Ice Container, Genuine Original Equipment Manufacturer (OEM) Part
- SAMSUNG DA97-07365G ASSEMBLY ICE MAKER AW-PJ OEM Original Part
The Ice Maker Assembly That Stops Freeze-Over on the RF23M8070SR
If you’ve confirmed that the ice maker itself is the problem—and it’s not just a clogged water line or thermostat issue—replacing the entire ice maker assembly is your best bet for a reliable fix on this model. this is the part to try when the unit is cycling but producing frozen buildup, or when the harvest cycle isn’t clearing properly.
What works
- Direct fit for the RF23M8070SR without bracket modification—mounting points align exactly as OEM.
- Includes the motor, fill valve, and thermostat as a single unit, so you’re not chasing multiple failure points after installation.
- Water and electrical connections are straightforward once you get the old assembly out; no special adapters needed on this model.
What doesn’t
- Installation requires removing the freezer shelf and sometimes the ice bucket—give yourself 45 minutes to an hour, not 15 minutes.
- Make sure your part number matches your fridge variant; there are several RF23 models, and not all assemblies are interchangeable.
I’ve seen too many DIYers order the wrong assembly variant because Samsung’s part number suffixes are easy to miss—check your model plate three times before hitting purchase. Once you have the right one, Refrigerator Ice Maker Assembly Replaces for Samsung RF23M8070SR will solve the freeze-over for good.
About This Article
Written by Dave Holt. Dave Holt has been taking apart and fixing household appliances since he was a teenager who couldn't leave a broken one alone. Eighteen years later, after fixing things for neighbors, friends, and anyone who'd let him, he's seen almost every failure mode there is. When he writes a repair guide here, it's based on the actual job, not a manufacturer overview. More about this site.
Scope and limits. Dave is a self-taught repairer, not a certified appliance technician. Unplug before you open anything, and leave sealed refrigeration systems, gas connections, and hardwired circuits to a qualified technician.
