Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Kenmore Refrigerator Defrost Heater Assembly Replacement Guide?

The most frequently replaced parts for Kenmore Refrigerator Defrost Heater Assembly Replacement Guide are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Kenmore Refrigerator Defrost Heater Assembly Replacement Guide a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Kenmore Refrigerator Defrost Heater Assembly Replacement Guide

Q: What does Kenmore Refrigerator Defrost Heater Assembly Replacement Guide mean?

Frost buildup on the evaporator, warm fridge or freezer, long run times, and ice in the freezer compartment mean your defrost heater failed. Replacing it restores automatic defrost and normal cooling.

Q: How do I fix Kenmore Refrigerator Defrost Heater Assembly Replacement Guide?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Kenmore Refrigerator Defrost Heater Assembly Replacement Guide — What This Part Does

The defrost heater is an electric heating element mounted on or near the evaporator coil. During the automatic defrost cycle, the heater turns on and melts frost off the evaporator so air can flow freely through the coils and keep your food cold. When the heater burns out or develops an open circuit, frost and ice accumulate on the evaporator, block airflow, and your refrigerator or freezer runs warm or unevenly.

Most heater failures are from a burned-out element or broken sheath. On some models, a bad defrost thermostat (which must close when cold to complete the heater circuit) also stops the heater from working. Loose or corroded wire connectors and damaged mounting clips are less common but can also cause the heater to fail.

Jump to Replacement Steps

Signs It Needs Replacing

Thick frost or ice coating the evaporator coil You see heavy frost buildup behind the freezer rear cover when you inspect the evaporator.
Refrigerator or freezer running warm Food is not as cold as it should be because blocked airflow reduces cooling performance.
Compressor runs constantly or for very long cycles The unit tries to compensate for poor airflow by running longer without reaching target temperature.
Ice buildup in the freezer compartment or around the drain Frost that should melt during defrost instead accumulates and freezes in visible areas.
Heater shows no continuity on a multimeter Testing the heater terminals with the power off reveals an open circuit instead of the expected 20 to 100 ohm resistance.
Visible damage to the heater element or wiring You see a cracked tube, burned connector, or broken wire at the heater assembly.

How to Replace It

Unplug the refrigerator or shut off the circuit breaker so there is no power to the unit.
Empty the freezer and remove all shelves and bins to access the rear freezer wall.
Remove the screws holding the rear freezer cover panel and lift the panel out to expose the evaporator and defrost heater.
Use a hair dryer or let the frost melt naturally until you can see the evaporator coil and heater clearly (watch for sharp evaporator fins).
Disconnect the wire connectors from the heater terminals and remove any mounting clips, brackets, or straps holding the heater to the evaporator.
Lift the old heater assembly off the evaporator and note the position of any insulators or spacers.
Position the new heater on the evaporator in the same location, snap or clip it into the mounting hardware, and reinstall any insulators.
Reconnect the wire connectors to the new heater terminals and verify all clips and brackets are secure.
Reinstall the rear freezer panel and screws, replace shelves and food, plug in the refrigerator, and monitor for normal cooling and defrost operation over the next 24 hours.

The Part You Need

Part	Notes
Defrost heater assembly	Amazon \| Find your exact part number on the model and serial plate inside the fridge door or on the rear wall. Common Kenmore-compatible part numbers include WR51X10053, WR51X10032, WR51X10097, 242044020, and 242044008. Heaters are typically 115 to 120 V, 400 to 575 W, and come as Calrod or quartz tube elements with mounting brackets.
Defrost thermostat (if included with your heater design)	Amazon \| Some heater assemblies use a separate thermostat clipped to the evaporator. Replace it if your model has one and it tests open when cold, or if the heater kit instructions call for it.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you replace the heater and thermostat but frost keeps building up, the defrost timer or control board is likely faulty. Diagnosing the control circuit requires a wiring diagram and knowledge of your model’s defrost system. Call a pro if you are not comfortable working around 120 V wiring in a tight freezer compartment, if the evaporator coil or refrigerant lines look damaged, or if you cannot identify your replacement part number. A technician can also test the entire defrost circuit and rule out wiring or control problems before you buy parts.