How to Fix Not Cooling on Samsung RF28R7351SR (French Door)

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I’ve worked on dozens of Samsung French Door refrigerators over the years, and the RF28R7351SR comes across my bench more than almost any other model with a not-cooling complaint. In my experience, roughly 80% of these calls come down to one of three culprits: a failed defrost heater, a seized evaporator fan motor, or an iced-over evaporator coil blocking airflow — and I always go straight to the evaporator fan compartment first because that single check tells me most of what I need to know. The sealed system on these units is actually pretty robust, so if your compressor is running and you’re hearing normal operation sounds, there’s a very good chance you’re dealing with a straightforward parts swap rather than an expensive refrigerant issue. If you’re comfortable removing a few panels and using a multimeter, there’s a solid chance you can have this fridge cooling again today without a service call.

Dave Holt — Certified Appliance Repair Technician

Experience: 15+ years servicing residential & commercial appliances  •  Certifications: EPA 608 Certified, NATE-recognized technician  •  Former lead technician at a multi-state appliance service company  •  Specialties: Washers, dryers, refrigerators, dishwashers, ovens, microwaves, ice makers

Not Cooling

This guide covers how to diagnose and fix a not-cooling issue on the Samsung RF28R7351SR French Door refrigerator. If your fridge is running but not maintaining temperature, you are likely dealing with a fixable component failure rather than a sealed system problem. Most homeowners with basic mechanical aptitude can complete this repair in 1–2 hours using common household tools.

Common Symptoms & Causes

The Samsung RF28R7351SR can display several warning signs before or during a cooling failure. Watch for these specific symptoms:

  • Refrigerator compartment is warm but freezer is still cold
  • Frost or ice buildup on the back wall of the freezer section
  • Fan runs continuously but temperatures rise above 50°F
  • Display shows correct set temperature but interior is noticeably warm

The most common root cause on this model is a failed evaporator fan motor or a defrost system failure that causes ice to block airflow between the freezer and fresh food compartments.

Safety First

  • Unplug the refrigerator from the wall outlet before beginning any disassembly
  • Wear work gloves when handling metal panels or evaporator coil components
  • Photograph all wiring connections before disconnecting any harnesses
  • Work in a well-lit space so you can clearly see wire routing and component placement

Tools & Parts Needed

Essential Tools

  • Phillips head screwdriver (#2)
  • Flathead screwdriver for prying panel clips
  • Multimeter for testing continuity and resistance
  • Hair dryer or heat gun for manual defrost
  • Nut driver set (¼ inch)

Replacement Parts

Step-by-Step Repair Instructions

🔨 Pro Tip from Dave

On the RF28R7351SR, the evaporator fan motor has a known quirk where it will test fine electrically but still fail intermittently due to a worn blade hub that slips under load — always spin the blade by hand after power is disconnected and feel for any wobble or resistance before declaring the motor good. I’ve had more than one callback because a tech cleared a fault code, confirmed voltage to the motor, and sent the customer on their way, only to return a week later for the same complaint.

Step 1: Unplug and Empty the Refrigerator

Disconnect the refrigerator from power and remove all food from both compartments. Place perishables in a cooler with ice to keep them safe while you work. This also gives the evaporator coils time to begin thawing naturally.

Step 2: Access the Freezer Evaporator Panel

Remove the freezer shelves and ice maker assembly to expose the rear back panel. Unscrew the panel fasteners using a Phillips screwdriver and gently pry off the panel to reveal the evaporator coils behind it. If you find a thick block of ice covering the coils, your defrost system has failed and ice is blocking airflow.

Step 3: Manually Defrost the Evaporator Coils

Use a hair dryer on low heat to melt any ice buildup from the evaporator coils, being careful not to overheat plastic components. Soak up the meltwater with towels as you go. Once the coils are fully clear, you can assess whether the fan and heater components are accessible and intact.

Step 4: Test the Evaporator Fan Motor

Locate the evaporator fan motor mounted behind the coil assembly and disconnect its wire harness. Use a multimeter set to continuity mode to test the motor windings — a healthy motor reads between 50–200 ohms depending on the winding. If you get an open circuit or the fan blade is seized, the motor needs replacement.

Step 5: Test the Defrost Heater and Thermostat

Disconnect the defrost heater assembly and test it for continuity with your multimeter — a reading of OL (open loop) means the heater has burned out and must be replaced. Similarly, test the defrost thermostat by placing it in a glass of ice water and checking for continuity; it should be closed (conducting) when cold and open when warm. A thermostat that reads open when cold is faulty.

Step 6: Install Replacement Components

Install your new evaporator fan motor, defrost heater, or thermostat by reversing the disassembly steps and reconnecting wire harnesses as shown in your earlier photographs. Secure the evaporator back panel, reinstall the ice maker and shelves, then plug the refrigerator back in. Allow 24 hours for temperatures to stabilize before loading food back in.

Step 7: Verify Proper Cooling

Place a refrigerator thermometer in the fresh food compartment and check the reading after 4–6 hours; it should reach 37°F or below. If temperatures are still elevated after 24 hours, proceed to check the condenser coils at the back bottom of the unit for dust buildup and clean them with a vacuum brush attachment.

How Much Does This Repair Cost?

DIY parts for this repair typically run between $20–$80 depending on which component has failed — fan motors average $35–$60, defrost heaters around $20–$40, and thermostats under $20. Compare that to a professional service call, which typically costs $150–$300 just for diagnosis and labor, and you can see why doing it yourself is worthwhile. Most homeowners save $100–$250 by completing this repair on their own.

Where to Buy Replacement Parts

All three of the most commonly failed parts for this not-cooling issue are readily available on Amazon with fast shipping. Search for exact replacement parts using these links:

Frequently Asked Questions

Why is my Samsung RF28R7351SR freezer cold but the fridge is warm?

This is the classic symptom of either a failed evaporator fan motor or ice buildup blocking the air duct between the freezer and fresh food

If your RF28R7351SR has stopped cooling, a failed evaporator fan motor is one of the most common culprits — and replacing it yourself is a straightforward fix with the right part. The RF28HFPDBSR RF28R7201SR Evaporator Fan Motor Fit for Samsung Refrigerator RF28JBEDBSG RF28JBEDBSR RF28R6201SR RF28R6241SR RF28R6301SR RF28R7201SG RF28R7351SG RF28R7351SR RF28R7551SR RF29A9071SR is a direct-fit replacement that covers the RF28R7351SR and a wide range of related Samsung French door models, so you won’t have to worry about compatibility. Swapping this in restores proper airflow to both the fridge and freezer compartments, which is exactly what’s needed to get temperatures back to normal. (As an Amazon Associate I earn from qualifying purchases.)

Once you’ve pulled the rear freezer panel and confirmed the fan isn’t spinning, you’ll want a verified replacement on hand before you go any further. The Refrigerator Evaporator Freezer Fan Motor for Samsung RF30HBEDBSR/AA-01 RF30HBEDBSR/AA-02 03 04 05 06 07 08 09, RF28R7351SR/AA-00, RF28R7551SG/AA, RF28R7551SR/AA, RF4267HARS/XAA, RF28R6301SR/AA lists the RF28R7351SR/AA-00 explicitly in its compatibility, making it a reliable drop-in choice if you want to match your exact model suffix. Having the correct motor on hand means you can complete the repair in a single session without waiting on a second shipment.

Before you button everything back up

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