How to Replace DA47-00247H Defrost Heater Assembly on Samsung Refrigerator — Step-by-Step

Your Samsung refrigerator's freezer compartment has turned into an ice cave, with frost building up on the back wall and your ice cream staying too soft in the fresh food section. Meanwhile, the compressor's running constantly, trying to compensate. Nine times out of ten, you're looking at a failed defrost heater assembly — specifically part DA47-00247H if you've got one of the RS series Samsung models.

This aluminum-clad heating element sits behind the back panel of your freezer compartment, melting frost off the evaporator coils during defrost cycles. When it fails, ice accumulates relentlessly because nothing's melting it away between cooling cycles. The fix isn't complicated, but you'll be working in tight quarters with some sharp sheet metal edges.

What You Need Before Starting

Gather these tools before you pull your fridge away from the wall:

• 1/4" nut driver or socket set
• Phillips screwdriver
• Flathead screwdriver
• Towels (for melting ice and water)
• Hair dryer or heat gun (optional, for speeding up defrosting)
• Work gloves (those sheet metal edges are unforgiving)
• Camera or phone (to photograph wire connections)

Repair Time: 45-90 minutes, depending on how much ice you're dealing with
Difficulty: Moderate — requires patience and some disassembly

Safety First

Unplug your refrigerator completely before starting this repair. You'll be working around both electrical connections and the evaporator coil's sharp aluminum fins. The defrost heater gets extremely hot during normal operation — touching it while energized will cause serious burns. If your freezer's heavily iced up, you'll need to defrost it first, which means removing food and either waiting 8-12 hours or carefully using a hair dryer. Never chip ice off the evaporator coils with sharp tools; you'll puncture the refrigerant lines and turn a $94 repair into a $600+ service call.

Step 1: Empty and Defrost the Freezer Compartment

Remove all food from the freezer and transfer it to coolers. Take out any removable shelves, bins, and the ice bucket assembly. If you've got significant ice buildup on the back wall, you'll need to melt it before accessing the defrost heater. Place towels on the bottom of the freezer to catch water. You can wait for natural defrosting (overnight) or speed things up with a hair dryer on low setting, keeping it at least 6 inches away from plastic components.

Step 2: Remove the Freezer Back Panel

Once the ice is gone, locate the screws holding the freezer's back panel in place — typically 4-6 Phillips screws around the perimeter. On RS275 and RS277 models, there's usually two screws at the top, two in the middle behind where the shelves sit, and two at the bottom. Remove these screws and carefully pull the panel forward and down. It might resist if there's still some ice anchoring it. The evaporator coil assembly will now be visible, along with the defrost heater clamped to the bottom of the coil.

Step 3: Disconnect and Remove the Failed Heater

Take a photo of the wire connections before disconnecting anything. The defrost heater has two wire terminals, usually covered by a rubber or plastic boot. Pull the connectors straight off — don't yank on the wires themselves. The heater assembly is held against the evaporator coil by metal clips or brackets. On most Samsung models, you'll find two clips that need to be squeezed or pried outward to release the heater. Gently work the old heater out from under the evaporator coil, being extremely careful not to bend or damage the aluminum fins.

Step 4: Install the New DA47-00247H Heater Assembly

Position your new DA47-00247H heater in the same location where the old one sat, typically running along the bottom of the evaporator coil. The aluminum sheath should make firm contact with the coil for proper heat transfer. Secure the mounting clips — you should hear or feel them snap into place. Double-check that the heater isn't touching any plastic components and has proper clearance from the back panel you'll be reinstalling. Connect the two wire terminals, making sure they're fully seated. Give each connector a gentle tug to verify it's locked on.

Step 5: Reassemble and Test

Replace the freezer back panel, threading all screws back into their original holes. Don't overtighten — you're screwing into plastic, and it'll strip easily. Reinstall the shelves, bins, and ice bucket. Plug your refrigerator back in and let it run for 24 hours before restocking with food. During the first few hours, check that the freezer's cooling properly and listen for normal compressor cycling.

Testing After Installation

After 24 hours of operation, inspect the evaporator area for proper defrosting. You shouldn't see excessive ice buildup on the coils. The freezer temperature should stabilize at 0°F or below. Listen for the defrost cycle — you might hear a sizzling sound every 8-12 hours when the heater activates to melt frost. If you've got a multimeter, you can verify the heater's working by checking for continuity across the terminals when it's unplugged (should read 200-400 ohms). During active defrost cycles, you might see water dripping into the drain pan underneath the refrigerator — that's normal and means your new heater's doing its job.

Frequently Asked Questions

How do I know if my defrost heater is bad or if it's the defrost thermostat?

The easiest test is visual: if you've got heavy frost buildup on the evaporator coils but the heater looks fine (no burns, breaks, or corrosion), test the defrost thermostat first. It's a small component attached to the coil that tells the heater when to activate. However, if the heater itself shows visible damage, burning, or tests open on a multimeter (no continuity), replace it. The DA47-00247H assembly includes the heater element and should be replaced as a unit when it fails.

Will this part work on my RS265TDRS or RS267TDWP model?

Yes, the DA47-00247H is compatible with the entire RS series lineup, including RS265TDRS, RS267TDWP, RS275ACBP, RS277ACWP, and dozens of other Samsung side-by-side models from the mid-2000s to early 2010s. This part replaces Samsung's original equipment and also crosses to AP4343389, PS4140557, and 2031542. Always verify your model number on the label inside the refrigerator compartment before ordering, but if you've got an RS-prefix Samsung side-by-side, you're almost certainly good to go.

Can I speed up the defrosting process without damaging anything?

Use a hair dryer on the lowest heat setting, keeping it moving and at least 6 inches away from plastic components and the evaporator coil. Never use sharp objects to chip away ice — you'll puncture the refrigerant lines. Some techs place bowls of hot water in the freezer and close the door to speed things up. Budget 3-4 hours for a heavily iced freezer if you're actively melting with a hair dryer, or just leave it unplugged overnight with towels on the bottom shelf. The defrosting is the most time-consuming part of this repair, but there's no way around it.